STIH)
STIHL MS 171, 181, 211 2007-05
MS 1
RA
_533
_00_
01_0
1
1. Introduction 3
2.
3.
3.13.23.33.43.5
4.
4.14.2
4.34.44.54.64.7
5.
5.1
6.
6.1
7.
7.17.2
7.37.47.57.67.7
8. Engine 28 11. Servicing the AV System 60
AV Spring on Oil Tank 60AV Spring on Fuel Tank 60
Contents71, MS 181, MS 211
Safety Precautions 4
Specifications 5
Engine 5Fuel System 5Ignition System 5Chain Lubrication 5Tightening Torques 6
Troubleshooting 8
Clutch 8Chain Drive, Chain Brake, Chain Tensioner 9Chain Lubrication 10Rewind Starter 11Ignition System 12Carburetor 14Engine 17
Cutting Attachment 18
Chain Catcher 18
Clutch 19
Clutch Drum 21
Chain Brake 22
Checking Operation 22Removing and Installing the Brake Band 22Brake Lever 24Flat Spring 26Pins 26Chain Tensioner 27Bar Mounting Studs 27
8.1
8.28.2.18.2.28.2.38.38.4
8.5
8.68.7
8.88.8.1
9.
9.19.1.1
9.29.3
9.49.59.69.6.19.6.2
9.6.39.6.49.7
10.
10.110.2
10.310.410.510.610.7
10.8q AND
Muffler / Spark Arresting Screen 28Leakage Test 29Preparations 29Vacuum Test 30Pressure Test 30Oil Seals 31Removing and Installing the Shroud 32Removing and Installing the Engine 33Crankshaft 34Ball Bearings/Crankshaft 36Piston 37Piston Rings 39
Ignition System 40
Ignition Module 40Removing and Installing 40Ignition Timing 42Testing the Ignition Module 42Spark Plug Boot 43Flywheel 44Short Circuit Wire 45Testing 45Removing and Installing 45Ground Wire 47Contact Spring 47Ignition System Troubleshooting 49
Rewind Starter 52
General 52Removing and Installing 52Pawl 53ErgoStart 53Rope Rotor 55Starter Rope / Grip 55Tensioning the Rewind Spring 57Replacing the Rewind Spring 58
11.111.2
11.3
11.4
12.
12.112.1.1
12.2
13.
13.113.213.3
13.413.51
REAS STIHL AG & Co. KG, 2007
AV Spring on Cylinder 61Handle Frame 62
Master Control Lever 64
Switch Shaft 64Removing and Installing 64Throttle Trigger / Interlock Lever 66
Chain Lubrication 68
Pickup Body 68Oil Suction Hose 68Removing and Installing the Oil Pump 69Valve 70Oil Tank Cap 71
2Contents
14. Fuel System 72
14.114.214.3
14.314.4
14.414.414.414.414.414.414.4
14.4
14.414.5
14.514.514.6
14.7
14.7
14.814.814.8
14.814.914.914.914.9
14.9
15.
16.Air Filter 72Baffle / Filter Base 72Removing and Installing the Carburetor 73
.1 Leakage Test 74Servicing the Carburetor 74
.1 Metering Diaphragm 74
.2 Inlet Needle 76
.3 Fixed Jet 76
.4 Valve Jet 77
.5 Pump Diaphragm 77
.6 Air Valve 79
.7 Choke Shaft / Choke Shutter 80
.8 Throttle Shaft / Throttle Shutter 82
.9 Adjusting Screws 85Adjusting the Carburetor 86
.1 Basic Setting 86
.2 Standard Setting 87Choke and Throttle Rods 87Removing and Installing the Intake Manifold 89
.1 Removing and Installing the Carburetor Carrier 90Tank Vent 92
.1 Testing 92
.2 Removing and Installing 93
.3 Manual Fuel Pump 93Fuel Intake 94
.1 Pickup Body 94
.2 Fuel Intake Hoses 95
.3 Fuel Hoses, Tank Vent /Manual Fuel Pump 96
.4 Fuel Tank Cap 97
Special Servicing Tools 98
Servicing Aids 100MS 171, MS 181, MS 211
MS 1
1. Introduction
This service manual contains detailed descriptions of all the typicproc
You illustout rinstacom
Referelevnum
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The special tools mentioned in the descriptions are listed in chapter 171, MS 181, MS 211
al repair and servicing edures for this power tool.
should make use of the rated parts lists while carrying epair work. They show the lled positions of the individual ponents and assemblies.
r to the latest edition of the ant parts list to check the part bers of any replacement parts.
lt on the machine may have ral causes. To help locate the , consult the chapter on bleshooting" and the "STIHL
ice Training System" for all mblies.
r to the Technical Information tins for engineering changes h have been introduced since ication of this service manual. nical information bulletins also lement the parts list until an ted edition is issued.
"SpecmanuidentiSpecithe spavaila
SymbpicturThe m
In the
: = As(
= An(
IIn the
A
a
b 4.2
Servicinformexcluequipnot beial Servicing Tools" of this al. Use the part numbers to fy the tools in the "STIHL al Tools" manual which lists all ecial servicing tools currently ble from STIHL.
ols are included in the text and es for greater clarity. eanings are as follows:
descriptions:
ction to be taken as hown in the illustration above the text)
ction to be taken that is ot shown in the illustration above the text)
illustrations:
Pointer
Direction of movement
= Reference to anotherchapter, i.e. chapter 4.2 in this example
e manuals and technical ation bulletins are intended
sively for the use of properly ped repair shops. They must passed to third parties.
Servicconsiis mo5910the m1650 screw
The sthey, may dmach
The anecesstandmoun
33
ing and repairs are made derably easier if the machine unted to assembly stand (3) 890 3100. To do this, secure ounting plate (2) 5910 850 to the assembly stand with two s (1) and washers.
crews must not project since depending on the machine, amage housings when the
ine is clamped in position.
bove operation is not sary with the new assembly 5910 890 3101 since the ting plate is already fitted.
2
219R
A000
TG
4Afterand covepowethroumounut (
The the mhead
AlwareplaTheySTIHthe SSTIHThissma
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Collecleanpropenvir
2. Safety Precautions disengaging the chain brake removing the chain sprocket r, bar and chain, the rheads bar stud is pushed gh the outer hole in the
nting plate and secured with the arrow).
machine is held in position on ounting plate by the two screw s on the engine housing.
ys use original STIHL cement parts. can be identified by theL part number,TIH) logo and the
L parts symbol ( symbol may appear alone on ll parts.
ing and disposing of oils and
ct fuel or lubricating oil in a container and dispose of it
erly in accordance with local onmental regulations.
533R
A000
TG
If the courswork,specias thewarni
Gasofuel acondi
Alwayglovecompassem
Improburns
Do noother All wooutdowiped
Alwayworkienginengine is started up in the e of repairs or maintenance observe all local and country-fic safety regulations as well safety precautions and
ngs in the instruction manual.
line is an extremely flammable nd can be explosive in certain tions.
s wear suitable protective s for operations in which onents are heated for bly or disassembly.
per handling may result in or other serious injuries.
t bring any fire, flame, spark or source of heat near the fuel. rk with fuel must be performed ors only. Spilled fuel must be away immediately.
s perform leakage test after ng on the fuel system and the e.MS 171, MS 181, MS 211
MS 1
3. Specifications
3.1 Engine
DispBorStroEng
MaxwithIdleCluCluCraat gund
3.2
3.3
3.4571, MS 181, MS 211
MS 171 MS 181, MS 181 C MS 211, MS 211 C
lacement: 30.1 cm3 31.8 cm3 35.2 cm3
e: 37 mm 38 mm 40 mmke: 28 mm 28 mm 28 mmine power to ISO 7293: 1.3 kW (1.8 PS)
at 9,500 rpm1.5 kW (2.0 PS) at 9,500 rpm
1.7 kW (2.3 PS) at 9,500 rpm
. permissible engine speed bar and chain: 13,500 rpm 13,500 rpm 13,500 rpm speed: 2,800 rpm 2,800 rpm 2,800 rpmtch: Centrifugal clutch without liningstch engages at: 5,100 rpm 5,100 rpm 5,100 rpmnkcase leakage test auge pressure: 0.5 barer vacuum: 0.5 bar
Fuel System Carburetor leakage test at gauge pressure:
0.8 bar
Operation of tank vent at gauge pressure: 0.5 barFuel: as specified in instruction manual
Ignition System Air gap between ignition module and fanwheel:
0.15...0.35 mm
Spark plug (suppressed): NGK CMR 6HElectrode gap: 0.5 mm
Chain Lubrication Fully automatic, speed-controlled oil pump with reciprocating piston
Oil delivery rate: 7.0 cm/min at 10,000 rpm
63.5 Tightening Torques
DG and P (Plastoform) screws are used in polymer and light metal components. These screws form a permanent thread when they are installed for the first time. They can be removed and installed as often as necobsFor
Fas
ScrScrScrCol
Col
Scr
Scr
Cou
ScrScr
ScrScrScr
Scr
Scr
ScrScr
Scr
ScrCol
ScrNut
ScrMS 171, MS 181, MS 211
essary without impairing the strength of the screwed assembly, providing the specified tightening torque is erved. this reason it is essential to use a torque wrench.
tener Thread size For component Torque RemarksNm
ew P 4x12 Cover plate, chain sprocket cover 2.5ew B 3.9x13 Cover plate (special accessory) 1.0ew D 4x15 Chain tensioner cover/engine housing 2.5lar screw D 8x18 Collar screw, engine housing/guide bar,
rear 16.0 1)
lar screw D 8x18 Collar screw engine housing/guide bar, front
16.0 1)
ew P 4x16 Cover, chain brake/engine housing (repair solution)
2.0
ew D 5x16 Cover, chain brake/engine housing (repair solution)
2.0
ntersunk screw M 6x14 Replacement chain catcher (repair solution)
4.0
ew P 5x20 Filter base/engine housing 4.0ew P 5x20 Filter base/engine housing/carburetor
carrier4.0
ew D 5x16 Spiked bumper/engine housing 3.5ew D 4x12 Manifold/cylinder 4.0ew P 5x20 AV bearing plug, front bottom/engine
housing4.0
ew P 5x20 AV bearing plug, rear bottom/handle frame
4.0
ew P 5x20 AV bearing plug, rear bottom/engine housing
4.0
ew D 5x18 AV bearing plug/cylinder 8.0ew P 5x25 Fan housing/hand guard/engine
housing4.0
ew P 5x20 Fan housing/engine housing 4.0M 12x1 L Clutch/crankshaft 50.0
ew D 5.3x41 Crankcase/engine pan/cylinder 11.0lar nut M 5 Baffle/filter base/collar screw,
carburetor3.5
ew D 5x18 Muffler/cylinder 8.0M 8x1 Flywheel/crankshaft 28.0 2)M 10x1 Spark plug 12.0
ew D 4x18 Ignition module/cylinder 4.0
MS 1
Remarks:
1) L2) D
Use
PlacTigh
Thisand
PowDo
Do 771, MS 181, MS 211
octite 243 medium strengthegrease crankshaft/flywheel faces and mount oil-free
the following procedure when refitting a DG or P screw in an existing thread:
e the screw in the hole and rotate it counterclockwise until it drops down slightly.ten the screw clockwise to the specified torque.
procedure ensures that the screw engages properly in the existing thread and does not form a new thread weaken the assembly.
er screwdriver setting for polymer: DG and P screws max. 500 rpmnot use a impact wrench for releasing or tightening screws.
not mix up screws with and without binding head
84. Troubleshooting
4.1 Clutch
Con
Sawthro
Saw
LouMS 171, MS 181, MS 211
dition Cause Remedy
chain stops under load at full ttle
Clutch shoes badly worn Install new clutch
Clutch drum badly worn Install new clutch drum
chain rotates at idle speed Engine idle speed too high Readjust with idle speed screw (LA) (counterclockwise)
Clutch springs stretched or fatigued Replace the clutch springs or install new clutch
Clutch spring hooks broken Replace the clutch springs
Clutch shoe bores worn Replace clutch shoes or install new clutch
d noises Clutch springs stretched or fatigued Replace all clutch springs
Needle cage damaged Fit new needle cage
Clutch shoe retainer broken Fit new retainer
Clutch shoes and carrier worn Install new clutch
MS 1
4.2 Chain Drive, Chain Brake, Chain Tensioner
Con
Cha
Sawthro
Sawimmacti971, MS 181, MS 211
dition Cause Remedy
in sprocket wears rapidly Chain not properly tensioned Tension chain as specified
Wrong chain pitch Fit chain of correct pitch
Insufficient chain lubrication Check chain lubrication
Chain sprocket worn Fit new chain sprocket
chain stops under load at full ttle
Clutch shoes badly worn Install new clutch
Clutch drum badly worn Install new clutch drum
Brake band blocked Check freedom of movement and operation of brake band
chain does not stop ediately when brake is
vated
Brake spring stretched or broken Fit new brake spring
Brake band stretched or worn Fit new brake band
Clutch drum worn Fit new clutch drum
10
4.3 Chain Lubrication
In the event of trouble with the chain lubrication system, check and rectibefo
.
Con
Cha
Mac
Oil MS 171, MS 181, MS 211
fy other sources of faults re disassembling the oil pump.
dition Cause Remedy
in receives no oil Oil tank empty Fill up with oil, check oil pump
Oil inlet hole in guide bar is blocked
Clean oil inlet hole
Intake hose or pickup body clogged or intake hose ruptured
Fit new intake hose and pickup body
Valve in oil tank blocked Clean or replace valve
Teeth on worm worn Install new worm
Oil pump damaged or worn Install new oil pump
Oil intake hose not properly fitted or damaged
Fit oil intake hose properly or install new hose
hine losing chain oil Oil pump body (engine housing) damaged
Check engine housing and oil pump and replace if necessary
Oil pump damaged or worn Install new oil pump
Oil intake hose connector damaged Install new oil intake hose
Oil intake hose not properly fitted or damaged
Fit oil intake hose properly or install new hose
pump delivers insufficient oil Oil pump worn Install new oil pump
Oil intake hose not properly fitted or damaged
Fit oil intake hose properly or install new hose
Unsuitable chain lubricant has been used
Drain unsuitable chain lubricant from oil tank and fill up with recommended chain lubricant
MS 1
4.4 Rewind Starter
Con
Sta
Sta
Stafar e
Staalm(cra
Ver
Staand1171, MS 181, MS 211
dition Cause Remedy
rter rope broken Rope pulled out too vigorously as far as stop or over edge, i.e. not vertically
Fit new starter rope
Normal wear Fit new starter rope
rter rope does not rewind Very dirty or corroded Clean or replace rewind spring
Insufficient spring tension Check rewind spring and increase tension
Rewind spring worn Fit new rewind spring
rter rope cannot be pulled out nough
Spring overtensioned Check rewind spring and reduce tension
rter rope can be pulled out ost without resistance nkshaft does not turn)
Guide peg on pawl or pawl itself is worn
Fit new pawl
Spring clip on pawl fatigued Fit new spring clip
sions with ErgoStart Spring worn or fatigued Fit new ErgoStart spring housing
Carriers or pawls on flywheel faulty Install new ErgoStart carriers or pawls
rter rope is difficult to pull rewinds very slowly
Starter mechanism is very dirty Thoroughly clean complete starter mechanism
Lubricating oil on rewind spring becomes viscous at very low outside temperatures (spring windings stick together)
Coat rewind spring with a little standard solvent-based degreasant (containing no chlorinated or halogenated hydrocarbons), then pull rope carefully several times until normal action is restored
12
4.5 Ignition System
Exercise extreme caution while carrying out maintenance and repaThe caus
Con
Engtem
A pMS 171, MS 181, MS 211
ir work on the ignition system. high voltages which occur can e serious or fatal accidents!.
dition Cause Remedy
ine runs roughly, misfires, porary loss of power
Spark plug boot is loose Press boot firmly onto spark plug and fit new spring if necessary
Spark plug sooted, smeared with oil
Clean the spark plug or replace if necessary
Fuel/oil mixture too much oil
Use correct mixture of fuel and oil
Incorrect air gap between ignition module and flywheel
Set air gap correctly
Flywheel cracked or has other damage or pole shoes have turned blue
Install new flywheel
Ignition timing wrong, flywheel out of adjustment, key in flywheel has sheared off
Install new flywheel
Weak magnetization in flywheel pole shoes have turned blue
Install new flywheel
Irregular spark Check operation of switch shaft/contact springs and ignition module.Faulty insulation or break in ignition lead or short circuit wire. Check ignition lead/ignition module and replace ignition module if necessary.Check operation of spark plug, clean spark plug and replace if necessary.
roblem with the carburetor or the engine can also be the reason for erratic running behavior.
MS 1
Condition Cause Remedy
No 1371, MS 181, MS 211
spark Spark plug faulty Install new spark plug
Faulty insulation or short in short circuit wire
Check short circuit wire for short circuit to ground
Break in ignition lead or insulation damaged
Check ignition lead, replace ignition module if necessary
Ignition module faulty Install new ignition module
14
4.6 Carburetor
Condition Cause Remedy
Careng
PooMS 171, MS 181, MS 211
buretor floods; ine stalls
Inlet needle not sealing. Foreign matter between valve seat and cone or cone worn
Remove and clean or replace the inlet needle, clean the carburetor, replace inlet needle if necessary
Inlet control lever sticking on spindle
Clean inlet control lever, replace if necessary
Helical spring not located on nipple of inlet control lever
Remove the inlet control lever and refit it correctly
Perforated disc on diaphragm is deformed and presses constantly against the inlet control lever
Fit a new metering diaphragm
r acceleration Setting of low speed screw too lean Check basic carburetor setting, correct if necessary
High speed screw too rich Check basic carburetor setting, correct if necessary
Inlet needle sticking to valve seat Remove inlet needle, clean and refit
Diaphragm gasket leaking Fit new diaphragm gasket
Metering diaphragm damaged or shrunk
Fit new metering diaphragm
Manifold damaged Install new manifold
MS 1
Condition Cause Remedy
Engidle
Eng1571, MS 181, MS 211
ine will not idle, speed too high
Throttle shutter opened too wide by idle speed screw (LA)
Reset idle speed screw (LA) correctly
Oil seals/engine leaking Seal or replace oil seals/engine
Air valve contaminated does not close
Clean air valve, replace if necessary
Air valve stiff Check air valve, replace if necessary
Throttle rod stiff throttle shutter does not close
Replace throttle rod and lever
ine stalls at idle speed Idle jet bores or ports blocked Clean the carburetor
Idle jet too rich or too lean Set low speed screw (L) correctly
Setting of idle speed (LA) incorrect throttle shutter completely closed
Set idle speed screw (LA) correctly
16
Condition Cause Remedy
Engload
Engpowspe
Engand
ErraMS 171, MS 181, MS 211
ine speed drops quickly under low power
Air filter dirty Clean the air filter
Throttle shutter not opened fully Check throttle rod
Tank vent faulty Replace tank vent
Fuel pickup body dirty Install new pickup body
Fuel strainer dirty Clean fuel strainer in carburetor, replace if necessary
Leak in fuel line between tank and fuel pump
Install new fuel line
Setting of high speed screw (H) too rich
Check basic carburetor setting, correct if necessary
Main jet bores or ports blocked Clean the carburetor
Pump diaphragm damaged or fatigued
Fit new pump diaphragm
ine running extremely rich, no er and very low maximum ed
Air valve does not open Check lever on air valve and replace if necessary
ine running too rich, low power low maximum speed
Air valve does not open fully in full throttle position
Check lever on air valve and replace if necessary
tic idle too lean Air valve does not close properly Check lever on air valve and replace if necessary
MS 1
4.7 Engine
Always check and, if necessary, repair the following parts before looki
- Air - Fue- Ca- Ign
Con
Engat idat fu
Engor r
Eng1771, MS 181, MS 211
ng for faults on the engine:
filterl system
rburetorition system
dition Cause Remedy
ine does not start easily, stalls le speed, but operates normally ll throttle
Oil seals in engine damaged Replace the oil seals
Engine leaking or damaged (cracks)
Seal or replace the engine
ine does not deliver full power uns erratically
Piston rings worn or broken Fit new piston rings
Muffler / spark arresting screen carbonized
Clean the muffler (inlet and exhaust), replace spark arresting screen, replace muffler if necessary
Air filter element dirty Replace air filter element
Fuel hose severely kinked or damaged
Fit new hose or position it free from kinks
Tank vent faulty Check tank vent and replace if necessary
Air valve does not open Check air valve and replace if necessary
ine overheating Insufficient cylinder cooling. Air inlets in fan housing blocked or cooling fins on cylinder very dirty
Thoroughly clean all cooling air openings and the cylinder fins
18
5. Cutting Attachment
Weafrom
: Un
: Reco
: Re
In
Mactens
Weafrom
: Oun
: Re(2gu
In
3
2
When installing the adjusting wheel, check that its teeth face the cover r gloves to protect your hands injury.
screw the hex nut (1).
move the chain sprocket ver (2).
move the bar (3) and chain.
stall in the reverse sequence.
hines with quick chain ioner
r gloves to protect your hands injury.
pen up the wing nut (1) and screw it counterclockwise.
move the chain sprocket cover ) and tensioning gear (3) with ide bar (4).
stall in the reverse sequence.
2
153
3RA0
01 T
G
4
1
533R
A002
TG
3
: Apwin
Chnec
Op
: Pufirsprepos
: Re
Readj
1
1
2ply screwdriver to side (1) of g nut and pry it out of its seat.
eck the wing nut and replace if essary.
en up the wing nut.
sh the wing nut (1), thin side t (arrow), into the opening and ss it home until it snaps into ition.
move the screw (arrow).
move the cover plate (1) and usting wheel (2).
165R
A006
TG
165R
A007
TG
1
533R
A005
TG
plate.
Reseq
5.1A repfitted the ch
Recov
Filecatcov
: Pocat
Puthrhouthe
Tigscraganee
Rerev
Tig
3MS 171, MS 181, MS 211
assemble in the reverse uence.
Chain Catcherlacement chain catcher can be if the integral chain catcher on ain sprocket cover is worn.
move the chain sprocket er, bar and chain, b 5
down the damaged chain cher on the chain sprocket er.
sition the replacement chain cher (1) in the guides (arrows).
sh the countersunk screw (2) ough the bore in the engine sing and fit the locknut (3) at other side.
hten down the countersunk ew firmly the locknut butts inst the engine housing and d not be held.
assemble all other parts in the erse sequence.
htening torques, b 3.5
533R
A006
TG
1 2
MS 1
6. Clutch
Troubleshooting, b 4.1
Reco
Re
Re
Thmththb
: Pu
: Un
1 171, MS 181, MS 211
move the chain sprocket ver, bar and chain, b 5
move the clutch drum, b 6.1
move the shroud, b 8.4
e spring may be preloaded on achines with ErgoStart. It is erefore necessary to remove e fan housing, b 10.1 and
10.2
ll off the spark plug boot (1).
screw the spark plug (1).
533R
A007
TG
1
533R
A008
TG
1
: Pu000plucyl
: Un
Note thread
Disas
Cla
: Usrem
1
1sh the locking strip (1) 0 893 5904 into the spark
g hole until it butts against the inder wall (arrow) as shown.
screw the clutch (1).
that the clutch has a left-hand .
sembling
mp the clutch in a vise.
e hook (2) 5910 890 2800 to ove the clutch springs (1).
533R
A009
TG
TOP
533R
A010
TG
2
533R
A011
TG
Pucar
: Pusho
Cle
Re
: Slipclu
119
ll the clutch shoes off the rier.
ll the retainers (1) off the clutch es.
an all parts, b 16
place any damaged parts.
the retainers (1) onto the tch shoes.
533R
A012
TG
533R
A013
TG
533R
A014
TG
20
: Fiar
: Cl(a
Attacthe r
: Atto
: Ustospthov
12
1t the clutch shoes (1) over the ms (2).
amp the clutch in a vise rrow).
h the springs to the side with aised hexagon (arrow).
tach one end of each spring (1) the clutch shoes.
e the hook (2) 5910 890 2800 attach the other ends of the rings and press them firmly into e clutch shoes do not erstretch the springs.
533R
A015
TG
533R
A016
TG
2
533R
A017
TG
: Ch(aratta
Copos
It is c(arrow
: Pocrahex
1eck the clutch all springs rows) must be properly ched.
ver washer (1) must be in ition.
orrectly fitted when TOP ) faces outwards.
sition the clutch on the nkshaft stub so that the raised agon (arrow) faces outwards.
533R
A018
TG
TOP
533R
A019
TG
TOP
533R
A020
TG
: Usscrcraposthefirm
Tig
Recyl
Rerev
1MS 171, MS 181, MS 211
e the hexagon (arrow) to ew the clutch (1) onto the nkshaft stub. Check the ition of the locking strip and n tighten down the clutch ly left-hand thread.
htening torques, b 3.5
move the locking strip from the inder.
assemble all other parts in the erse sequence.
TOP
533R
A021
TG
MS 1
6.1 Clutch Drum
Ore
Reco
: Puth
Rem(1), s
1
1 171, MS 181, MS 211
n machines with ErgoStart, lieve spring tension, b 10.4
move the chain sprocket ver, bar and chain, b 5
ll the hand guard (1) towards e front handle.
R
ove and install the clutch drum ee instruction manual.
533R
A022
TG
TOP
1
533R
A023
TG
: Pu
Clecra
Lubcra
Inssig
If therthe indrum thickn80% oa newll off the needle cage (1).
an the needle cage and nkshaft stub, b 16
ricate the needle cage and nkshaft stub, b 16
pect the clutch drum (1) for ns of wear.
e are signs of serious wear on side diameter of the clutch (1), check the remaining wall ess. If it is less than about f the original thickness, install clutch drum.
TOP
533R
A024
TG
VA14
8RA1
01
80%
100%
1
!
The nmust
Use t
Apoutthe
Rerev21
otch (arrow) in the clutch drum engage the worms spring (1).
he mark (2) for alignment.
ply thin coating of oil to the side of the clutch drum and brake band.
assemble all other parts in the erse sequence.
TOP
2
533R
A025
TG
22
7. Chain Brake
7.1 Checking Operation
The impochainin tei.e. tactivchainstan
Contfine smothe bimpaThisforcebrakbrakeffec
St
W(lofosero
Wopacchst
The deceimpe
If thepropb 4
7.2 Removing and Installing the Brake Bandchain brake is one of the most rtant safety devices on the saw. Its efficiency is measured
rms of the chain braking time, he time that elapses between ating the brake and the saw coming to a complete
dstill.
amination (with chain oil, chips, particles of abrasion, etc.) and othing of the friction surfaces of rake band and clutch drum ir the coefficient of friction. , in turn, reduces the frictional s and thus prolongs the ing time. A fatigued or stretched e spring has the same negative t.
art the engine
ith the chain brake activated cked), open the throttle wide r a brief period (max. 3 conds) the chain must not tate.
ith the chain brake released, en the throttle wide and tivate the brake manually the ain must come to an abrupt op.
braking time is in order if leration of the saw chain is rceptible to the eye.
chain brake does not operate erly, refer to troubleshooting, .2.
Tro
Recov
: Dispultowbra
Re
Putheten
To redactivachain
: Uscovsho
Re(1)nec
1ubleshooting, b 4.2
move the chain sprocket er, bar and chain, b 5
engage the chain brake by ling the hand guard (1) ards the front handle the ke band is loose.
move the clutch drum, b 6.1
sh the hand guard (1) towards guide bar the brake band is sioned.
uce the risk of injury, do not te the chain brake while the brake cover is open.
e a screwdriver to ease the er (1) away at the points wn (arrows).
move and inspect the cover , service or replace if essary.
533R
A022
TG
TOP
1
533R
A356
TG
: Prysea
: Swout
Do no
: Tuonethe
1
1MS 171, MS 181, MS 211
the brake band (1) out of its t (arrow).
ing the brake band (1) wards.
t over-stretch the brake band.
rn the brake band (1) slightly to side and disconnect it from brake lever (arrow).
533R
A027
TG
1
533R
A028
TG
533R
A029
TG
MS 1
Instanoticareapartsrema0.6 m
: Atbranits
: Swgu
171, MS 181, MS 211
ll a new brake band if there are eable signs of wear (large s on inside diameter and/or of outside diameter) and its ining thickness is less than m.
tach the brake band (1) to the ake lever (arrow) from the side d then turn it in the direction of seat.
ing the brake band into the ide (arrow) first.
533R
A030
TG
533R
A031
TG
533R
A032
TG
: Pugui
: Pusea
Enholhom
1sh the brake band (1) into its des (arrows).
sh the brake band (1) into its t (arrow) as far as stop.
gage pegs on cover (1) in the es (arrows) and push it fully
e.
533R
A059
TG
533R
A027
TG
1
TOP
1
533R
A026
TG
If the cover
Drithea (b (
If ahouinw
Pla
Fit scr
Tig
Insb
Rerev
Ch
123
pegs have broken off, the can be serviced.
ll out the recesses exactly in center (arrow):1) = o 4.5 mm2) = o 5.5 mm
peg is stuck in the engine sing, remove it by pushing it ards.
ce the cover (1) in position.
D 5x16 screw (2) and P 4x16 ew (3) and tighten down firmly.
htening torques, b 3.5
tall the clutch drum, 6.1
assemble all other parts in the erse sequence.
eck operation.
533R
A033
TG
2
TOP
533R
A034
TG
13 2
24
7.3 Brake Lever
Tr
Re
Puthsp
: Us11brpiou
Dith
: Ta
: Prho
Tore
2
1
2oubleshooting, b 4.2
move the brake band, b 7.2
sh the hand guard away from e front hand to relax the brake ring.
e the assembly tool (2) 17 890 0900 to disconnect the ake spring (1) from the anchor n (arrow) the spring may pop t during this operation.
sconnect the brake spring from e brake lever.
ke out the screw.
y the hand guard (1) off the fan using (arrow).
ease assembly, remove the wind starter, b 10.2
533R
A035
TG
153
3RA0
36 T
G
: Re
: Liftthethe
Rethe
: Pulev(ar
Rebramove the E-clip (arrow).
and turn the strap (1) a little, n push it to the left as far as hole (arrow) and remove it.
move the spacer sleeve from brake lever.
ll the hand guard (1) and brake er (2) off the pivot pins rows) together.
move the hand guard and ke lever.
533R
A037
TG
533R
A038
TG
1
533R
A039
TG
1
2
: Puhan
Insgua
Insif n
Insrep
Cleb
Pothespr
: Puhanthe
1MS 171, MS 181, MS 211
ll the brake lever (2) out of the d guard (1).
pect the brake lever and hand rd and replace if necessary.
pect the pivot pins and replace ecessary, b 7.5
pect the flat spring and lace if necessary., b 7.4
an all disassembled parts, 16
sition the brake lever so that hook (arrow) for the brake ing is at the top.
sh the brake lever (1) into the d guard recess and line up
holes.
533R
A040
TG
533R
A041
TG
1
MS 1
Lu
: Pulebu
: Liguanpi
: Eagu
Pulethsa
2
1
Locate the hand guard at the starter side and fit the screw. 171, MS 181, MS 211
bricate the pivot pins, b 16
sh the hand guard and brake ver over the machine until they tt against the pivot pins.
ft the bearing boss of the hand ard and the brake lever a little d position them on the pivot
ns (arrows).
se the cam (arrow) of the hand ard (2) past the flat spring (1).
sh the hand guard and brake ver onto the pivot pins, moving e hand guard to and fro at the me time.
533R
A042
TG
533R
A043
TG
533R
A044
TG
Pu
Fit
: Fit
: Thetighrelacas
If the anchob 7.sh on the spacer sleeve.
the strap (1).
the E-clip (2).
turns of brake spring must be tly against one another in the xed condition. If this is not the e, replace the brake spring.
groove in the brake spring r pin is worn, install a new pin,
5
533R
A045
TG
1 2
533R
A046
TG
: Attbra
: Us111bra(ar
Rerev
Tig
Lub
225
ach brake spring (1) to the ke lever (arrow).
e assembly tool (2) 7 890 0900 to attach the ke spring (1) to the anchor pin row).
assemble all other parts in the erse sequence.
htening torques, b 3.5
ricate the brake lever, b 16
533R
A047
TG
533R
A048
TG
1
26
7.4 Flat Spring
The hold
Re
: Puit
: Pugu
Lu
Rere
Ti
7.5 Pins12flat spring and hand guard cam the hand guard in position.
move the brake lever, b 7.3
ll out the flat spring (1), check and replace if necessary.
sh the flat spring (1) into the ides (arrows).
bricate the flat spring, b 16
assemble all other parts in the verse sequence.
ghtening torques, b 3.5
533R
A049
TG
153
3RA0
50 T
G
1
The aWorn
All pathe pifor gr
Re
: Usthethesup
: Ustheclu
BecoaLoc
: Poboron exipin
3nchor pins secure the springs. pins must be replaced.
rts have been removed from ns in the following illustrations eater clarity.
move the engine, b 8.5
e a suitable punch to drive out pins (1+2) in the direction of engine use suitable port.
e a suitable punch to drive out pin (3) in the direction of the tch use suitable support.
fore installing the new pin (1), t its knurled shank with tite, b 16
sition the new pin (1) in the e (arrow) so that the knurling the pin meshes with the sting knurling in the bore. Turn back and forth as necessary.
533R
A051
TG
2 1
533R
A052
TG
1
: Drispe
View
: CasqudimPinPinPin
Rerev
Tig
Lubspr
3
3MS 171, MS 181, MS 211
ve home pins (1+2+3) to cified lengths.
from air filter side.
refully tap home the pins arely to obtain the following ensions: (1) a = 8.9 mm (2) b = 12.1 mm (3) c = 4.0 mm
assemble all other parts in the erse sequence.
htening torques, b 3.5
ricate the brake lever and flat ing, b 16
533R
A053
TG
a
b
c 533RA0
54 T
G
12
MS 1
7.6 Chain Tensioner
For mtens
Reco
Tr
: Tuunagth
: Re
1 27.7 Bar Mounting Studs71, MS 181, MS 211
achines with quick chain ioner see b 5
move the chain sprocket ver, bar and chain, b 5
oubleshooting, b 4.2
rn the spur gear (2) clockwise til the tensioner slide (1) butts ainst the right-hand end and e screw (arrow) is visible.
move the screw (arrow).
2
1
533R
A055
TG
533R
A056
TG
: Reten
: Insassandnec
Cleb
Lubwitb
Insmove the spur gear (1) and sioner slide (2).
pect the cover (1), spur gear embly (2), tensioner slide (3) thrust pad (4) and replace if essary.
an all disassembled parts, 16
ricate the chain tensioner h STIHL multipurpose grease, 16
tall in the reverse sequence.
533R
A057
TG
42
1 3
2
533R
A058
TG
Recov
: Pu(1)as
: Un
: Be(arLoc
Fit the
Tig
Rerev27
move the chain sprocket er, bar and chain, b 5
sh stud puller 5910 893 0501 over the collar stud (2) as far it will go. Unscrew the stud.
screw collar stud (3).
fore installing, coat threads rows) of collar studs with tite, b 16
the collar studs and tighten m down firmly.
htening torques, b 3.5
assemble all other parts in the erse sequence.
23
1
533R
A003
TG
533R
A004
TG
28
8. Engine
8.1 Muffler / Spark Arresting Screen
Alwarepaair filooki
Tr
: Prm
: Ta
Reanys check and, if necessary, ir the fuel system, carburetor, lter and ignition system before ng for faults on the engine.
oubleshooting, b 4
y the plugs out of the muffler by eans of the tabs (arrows).
ke out the screws (arrows).
move the muffler (1), check d replace if necessary.
533R
A060
TG
533R
A061
TG
1
: Re
Spark
: Usspafitte
Cle(1)
Ins
: Insfac
Po
1
1move the heat shield (1).
arresting screen
e suitable pliers to pull out the rk arresting screen (1) (if d).
an the spark arresting screen and replace if necessary.
tall in the reverse sequence.
pect and clean the sealing es (arrows), b 16
sition machine vertically.
533R
A062
TG
533R
A063
TG
533R
A064
TG
: Plapos(arsea
Capos
: Fit coraga
Tig(ar
: Pu
Tig
1
1MS 171, MS 181, MS 211
ce the heat shield (1) in ition and use the recesses
rows) to line it up on the ling face of the exhaust port.
re place the muffler (1) in ition.
the screws (arrows) and check rect position of heat shield in.
hten down the screws rows) firmly.
sh home the plugs (arrows).
htening torques, b 3.5
533R
A065
TG
533R
A066
TG
533R
A060
TG
MS 1
8.2 Leakage Test
Defecraccaussuppengimixtu
Thispresimpo
Morespeesmo
Alwafirst.
The thoro0000
8.2.1
Re
: Un
SeThin
: Fido
Ti
The sealing plate must completely fill the space between the two 71, MS 181, MS 211
ctive oil seals and gaskets or ks in castings are the usual es of leaks. Such faults allow lementary air to enter the ne and upset the fuel-air re.
makes adjustment of the cribed idle speed difficult, if not ssible.
over, the transition from idle d to part or full throttle is not oth.
ys perform the vacuum test
engine can be checked ughly for leaks with the pump 850 1300.
Preparations
move the shroud, b 8.4
screw the spark plug (1).
t the piston to top dead center. is can be checked through the
let port.
t spark plug (1) and tighten it wn firmly.
ghtening torques, b 3.5
533R
A008
TG
1
: Prymu
Tak
Re
Fit
: Ins
: Fit 000cylandmo
1
1 the plugs (arrows) out of the ffler.
e out the screws.
move the muffler.
the flange (1) 1123 855 4200.
ert the screws (arrows).
the sealing plate (1) 0 855 8106 between the
inder exhaust port and flange tighten down the screws
derately.
533R
A060
TG
533R
A116
TG
533R
A067
TG
screw
Re
: Chpla
: Fit 250
: Fit the
1
129
s.
move the carburetor, b 14.3
eck that the sleeve (1) is in ce.
the test flange 1139 893 0 (1).
the nuts (arrows) and tighten m down firmly.
533R
A069
TG
533R
A070
TG
533R
A071
TG
30
8.2.2 Vacuum Test
Oil sto a awaypistothere
A tes0000fault
: Copuni
: Pu
: Opra
If the vacuum reading remains constant, or rises to no more than eals tend to fail when subjected vacuum, i.e. the sealing lip lifts from the crankshaft during the n's induction stroke because is no internal counterpressure.
t can be carried out with pump 850 1300 to detect this kind of
.
nnect suction hose (1) of mp 0000 850 1300 to
pple (arrow).
sh ring (1) to the left.
perate the lever (2) until the essure gauge (arrow) indicates vacuum of 0.5 bar.
533R
A072
TG
1
1
2
533R
A073
TG
0.3 baassumgood pressvacuumust
Aftring
Cob
8.2.3
Carryfor the
Alwbef
: Copum(arr within 20 seconds, it can be ed that the oil seals are in
condition. However, if the ure continues to rise (reduced m in the engine), the oil seals be replaced, b 8.3
er finishing the test, push the to the right to vent the pump.
ntinue with pressure test, 8.2.3
Pressure Test
out the same preparations as vacuum test, b 8.2.2
ays carry out the vacuum test ore the pressure test, b 8.2.2
nnect pressure hose (1) of p 0000 850 1300 to nipple
row).
533R
A072
TG
1
: Pu
: Opprea ppreleaairt
If thmupar
To finarea enginexists
Aftringdis
Re
Ins
Loothe
Tig
Rerev
TigMS 171, MS 181, MS 211
sh the ring (1) to the right.
erate the lever (2) until the ssure gauge (arrow) indicates ressure of 0.5 bar. If this ssure remains constant for at st 20 seconds, the engine is ight.
e pressure drops, the leak st be located and the faulty t replaced.
d the leak, coat the suspect with oil and pressurize the e. Bubbles will appear if a leak .
er finishing the test, push the to the left to vent the pump
connect the hose.
move the test flange.
tall the carburetor, b 14.3
sen the muffler and remove sealing plate.
hten down the muffler firmly.
assemble all other parts in the erse sequence.
htening torques, b 3.5
1
2
533R
A075
TG
MS 1
8.3 Oil Seals
Use engiInstathe e
It is nthe coil se
Ignit
Rean
Re
Frtapu
: Apwi
2
1
1
Clamp the puller arms. Clutch side71, MS 181, MS 211
oil seal (1) 9638 003 1581 if the ne is not opened.ll oil seal (2) 9639 003 1585 if ngine has been opened up.
ot necessary to disassemble omplete engine to replace the als.
ion side
move the fan housing, b 10.1 d b 10.2
move the flywheel, b 9.5
ee off the oil seal in its seat by pping it with a suitable tube or a nch.
ply puller (1) 5910 890 4400 th No. 3.1 jaws 0000 893 3706.
217R
A085
TG
533R
A076
TG
Pu
Take crank
Cle
Lubsea
Apbthe
Slipfaccra
: Us112sea
The sfree fr
Warotatim
Deb
Rerev
1
2ll out the oil seal.
care not to damage the shaft stub.
aning the sealing face, b 16
ricate sealing lips of new oil l with grease, b 16
ply thin coating of sealant, 16, to the outside diameter of oil seal.
the oil seal, closed side ing the engine, over the nkshaft stub.
e press sleeve (2) 3 893 2400 to install the oil l (1).
eating face must be flat and om burrs.
it about one minute, then te the crankshaft several
es.
grease the crankshaft taper, 16
assemble all other parts in the erse sequence.
533R
A077
TG
Recov
Re
Re
: Re(1)
: Re
1
131
move the chain sprocket er, bar and chain, b 5
move the clutch, b 6
move the oil pump, b 13.3
move and inspect the worm , and replace if necessary.
move the retaining ring (1).
533R
A074
TG
533R
A078
TG
32
Frtapu
: Apwi
Cl
Pu
Takecran
Cl
Luse
: Fi11
Apbth
1
1
Slip the oil seal, closed side facing the engine, over the ee off the oil seal in its seat by pping it with a suitable tube or a nch.
ply puller (1) 5910 890 4400 th No. 3.1 jaws 0000 893 3706.
amp the puller arms.
ll out the oil seal.
care not to damage the kshaft stub.
eaning the sealing face, b 16
bricate sealing lips of new oil al with grease, b 16
t the installing sleeve (1) 18 893 4602.
ply thin coating of sealant, 16, to the outside diameter of
e oil seal.
533R
A079
TG
533R
A080
TG
ins
Re
: Us112sea
Warotatim
: Fit
Ins
Lubb
1
2
1talling sleeve.
move the installing sleeve (1).
e press sleeve (1) 3 893 2400 to install the oil l (2).
it about one minute, then te the crankshaft several
es.
the retaining ring (1).
tall the oil pump, b 13.3
ricate the worm with grease, 16
533R
A081
TG
533R
A082
TG
: Pucramu
Rerev
8.4
: Purea
: Liftit ohan
1MS 171, MS 181, MS 211
sh the worm (1) onto the nkshaft stub as far as stop it st engage the oil pump pinion.
assemble all other parts in the erse sequence.
Removing and Installing the Shroud
sh slide lock (1) in direction of r handle.
the shroud (1) a little and pull ff in the direction of the rear dle.
533R
A087
TG
533R
A083
TG
1
533R
A088
TG
1
MS 1
: Apspth
Re
Inre
: Pu(apo
: Pu(1th
1
2
1
1 271, MS 181, MS 211
ply screwdriver above the indle (arrow) and push it into e slide (1).
move the slide (1).
spect the slide and spindle and place if necessary.
sh the slide (1) into the guides rrows) until it snaps into sition in the spindle (2).
sh the bearing lugs of shroud ) into the guides (arrows) until ey snap into position.
533R
A084
TG
533R
A089
TG
1
533R
A086
TG
: Puas wit
8.5
The cremovpiston
Re Re
cov Re Re Re
b Re
b Re Re
b Re If n
carsh the shroud (1) down as far stop and secure in position h the slide lock (2).
Removing and Installing the Engine
omplete engine has to be ed before removing either the or cylinder.
move the shroud, b 8.4move the chain sprocket er, bar and chain, b 5
move the muffler, b 8.1move the clutch, b 6move the ignition module, 9.1move the wiring harness, 9.6.2move the flywheel, b 9.5move the handle frame, 11.4move the throttle rod, b 14.6ecessary, also remove the buretor carrier, b 14.7.1
533R
A085
TG
533R
A090
TG
: Re
: Rescrund e
: Takeng
After alwayapply
The cbe rebeen
1
133
move the worm (1).
move the cylinder mounting ews (arrows) from the erside of the engine housingngine pan is also loose.
e the engine (1) out of the ine housing.
loosening the engine pan, s clean the sealing faces and fresh sealant, b 16
arburetor carrier can be also moved after the engine has removed.
533R
A074
TG
533R
A091
TG
533R
A092
TG
34
Clcysene
Apfa
In
: Mpr (a
: Pacropho
Caen wiean the sealing faces on the linder, engine pan and oil als, remove gasket residue if cessary, b 16
ply fresh sealant to sealing ces, b 16
stall new oil seals, b 8.6
ake sure the oil seals are operly seated they must be installed flush rrow).
ss the clutch end of the ankshaft (1) through the ening (arrow) in the engine using.
refully place the engine in the gine housing
support engine pan from below th one hand.
533R
A093
TG
533R
A094
TG
1
Pohou thengup.
: Fit mo
Ins
Rerev
Tig
Ca
8.6
Re
: Prythe
Re
1sition the engine in the engine sing and hold it there e holes in the engine housing, ine pan and cylinder must line
and tighten down the cylinder unting screws (arrows).
tall the worm, b 8.3
assemble all other parts in the erse sequence.
htening torques, b 3.5
rry out leakage test, b 8.2
Crankshaft
move the engine, b 8.5
the engine pan (1) away from engine at the lugs (arrows).
move the engine pan.
533R
A091
TG
533R
A096
TG
: Liftbea
: Capis
Insbeanec
Insandb
: Re
: PucraMS 171, MS 181, MS 211
the crankshaft out of the ring seats (arrows).
refully pull the crankshaft and ton out of the cylinder.
pect the crankshaft and ball rings and replace if essary, b 8.7
pect piston and piston rings replace if necessary, b 8.8, 8.8.1
move the retaining ring (1).
ll the oil seals (arrows) off the nkshaft stub.
533R
A097
TG
1
533R
A098
TG
533R
A099
TG
MS 1
Insegab
The and Partsmus
Chre
If a nthe iserv71, MS 181, MS 211
spect the cylinder and clean the aling faces (arrows), remove sket residue if necessary, 16
sealing faces must be clean show no signs of damage. with damaged sealing faces
t be replaced.
eck the intake manifold (1) and place if necessary, b 14.7
ew cylinder is installed, transfer ntake manifold (if it is still iceable) from the old cylinder.
533R
A102
TG
1
533R
A101
TG
Use oenginInstalthe en
: Pu111cra
: Pufaccra
: Fit
2
1il seal (1) 9638 003 1581 if the e is not opened.l oil seal (2) 9639 003 1585 if gine has been opened up.
sh the installing sleeve (1) 8 893 4602 onto the nkshaft.
sh the new oil seals, open side ing the crankshaft, onto the nkshaft stubs.
the retaining ring (1).
217R
A085
TG
153
3RA1
07 T
G
1
533R
A098
TG
Luband
: Pothethe(arrisk
Aligbef
Viewelong cthe rig35
ricate the piston, piston rings cylinder wall with oil.
sition the piston rings so that radii at the ring gap meet at fixing pin in the piston groove rows) there is otherwise a of ring breakage.
n the piston and crankshaft ore installing in the cylinder.
d from the exhaust port, the rankshaft stub (1) must be on ht.
533R
A104
TG
533R
A105
TG
1
36
The by th
: Cacr(a
: Apthth
: Pobebemprho
Clean the crankshaft stub, b 16pistons rings are compressed e inner taper of the cylinder.
refully push the piston with ankshaft into the cylinder rrow).
ply thin coating of sealant to e outside diameter (arrows) of e oil seals, b 16
sition the crankshaft with arings and oil seals in the aring seats in the cylinder,
aking sure the oil seals are operly seated (arrows) in the using.
533R
A106
TG
533R
A108
TG
533R
A109
TG
Inson gasb
The mcleanway. Rmatin
: Apb
Sealarecesports
: Placyl
Applypan sdistrib
Take crankpect and clean the mating face the engine pan, remove ket residue if necessary, 16
ating faces must be perfectly and not be damaged in any
eplace parts with damaged g faces.
ply sealant along the groove, 16
nt must not get into the ses (arrows) the transfer must not be obstructed.
ce the engine pan (1) on the inder.
slight pressure to the engine o that the sealant is evenly uted .
care not to damage the shaft stubs.
533R
A110
TG
1
533R
A111
TG
Ins
Rerev
8.7
Re
Resea
Re
: Puign
: PucluMS 171, MS 181, MS 211
tall the engine, b 8.5
assemble all other parts in the erse sequence.
Ball Bearings/Crankshaft
move the engine, b 8.5
move the crankshaft and oil ls, b 8.6
move the piston, b 8.8
ll the ball bearing (1) off the ition end of the crankshaft.
ll the ball bearing (1) off the tch end of the crankshaft.
1
533R
A113
TG
1
533R
A114
TG
MS 1
: Throanthre
Whecranbear
Clin
Use cran
: Apinbeas
2
1
1171, MS 181, MS 211
e crankshaft (1), connecting d (2) and needle bearing (3) are inseparable unit. This means e crankshaft must always be placed as a complete unit.
n fitting a replacement kshaft, always install new ball ings and oil seals.
ean the crankshaft before stalling, b 16
a firm support (2) to protect the kshaft.
ply a suitable sleeve (1) to the ner race to press home the ball aring at the clutch side as far stop.
3
533R
A115
TG
2
1
533R
A117
TG
Use acrank
: Apinnbeaas
Luboil.
Ins
Inssea
Ins
8.8
Re
Re
: Ushoogro(ar
2 firm support (2) to protect the shaft.
ply a suitable sleeve (1) to the er race to press home the ball ring at the ignition side as far
stop.
ricate the needle bearing with
tall the piston, b 8.8
tall the crankshaft and oil ls, b 8.6
tall the engine, b 8.5
Piston
move the engine, b 8.5
move the crankshaft, b 8.6
e a suitable tool to ease the kless snap rings out of the oves in the piston bosses row).
533R
A119
TG
533R
A120
TG
: Poassaga
: Us111pin
If the by taphammduringno jolconne
: Recon
Insrep
137
sition the small diameter of embly drift (1) 1110 893 4700 inst the piston pin.
e the assembly drift (2) 0 893 4700 to push the piston (1) out of the piston.
piston pin is stuck, release it ping the end of the drift with a er. Hold the piston steady this process to ensure that
ts are transmitted to the cting rod..
move the piston (1) from the necting rod.
pect the piston rings and lace if necessary, b 8.8.1
533R
A121
TG
2
533R
A122
TG
1
533R
A123
TG
38
Lu
: Lith(alorig
Poco
: Pu11firenpi
: Fiasth
1bricate needle cage with oil.
ne up the piston as shown in e illustration so that the mark rrow) points to the rear and the ng crankshaft stub (1) is on the ht.
sition the piston on the nnecting rod.
sh the assembly drift (1) 10 893 4700, small diameter st, through the piston and small d (needle cage) and line up the
ston.
t the piston pin (2) on the sembly drift (1) and slide it into e piston.
533R
A124
TG
533R
A125
TG
1
533R
A126
TG
1 2
: Reins
: Attmagapsha
: Putheove
The inthe flamove the sleeve (1) from the talling tool 5910 890 2210.
ach the snap ring (1) to the gnet (2) so that the snap ring is on the flat side of the tool's nk (arrow).
sh the large slotted diameter of sleeve (1) 5910 893 1707 r the magnet and snap ring.
ner pin (2) must point towards t face (3) of tool's shank.
533R
A127
TG
1
533R
A128
TG
12
3
533R
A129
TG
2 1
: Predowtheof t
Use aboard
: Reont
Innerflat faMS 171, MS 181, MS 211
ss the installing tool nwards into the sleeve until
magnet butts against the end he guide slot.
suitable base (wooden ).
move the sleeve and slip it o the other end of the shank.
pin (arrow) must point toward ce.
533R
A130
TG
533R
A131
TG
MS 1
Insid
: Ap59tahotohoth
Fit th(arronear
Chbo
171, MS 181, MS 211
stall the snap rings at both es.
ply the installing tool 10 890 2210 with the sleeves
per against the piston boss, ld the piston steady, center the
ol shank exactly and press me until the snap ring slips into e groove.
e snap ring (1) so that its gap w) points up. It must not be the recess (2).
eck position and security of th snap rings.
533R
A132
TG
533R
A133
TG
2
Chrep
Chbeanec
Ins
Ins
8.8.1
Re
Repispis
: Usscreck the piston rings and lace if necessary., b 8.8.1
eck the oil seals and ball rings and replace if essary., b 8.7
tall the crankshaft, b 8.6
tall the engine, b 8.5
Piston Rings
move the piston, b 8.8
move the piston rings from the ton the MS 171 has only one ton ring.
e a piece of old piston ring to ape the grooves clean.
533R
A134
TG
533R
A135
TG
: Insgroupw
: Pothethe(ar
Chof t
Ins39
tall the new piston rings in the oves so that the radii face ard (arrows).
sition the piston rings so that radii at the ring gap meet at fixing pin in the piston groove rows).
eck correct installed position he piston rings (arrows).
tall the piston, b 8.8
533R
A136
TG
533R
A137
TG
40
9. Ignition System
Exercise extreme caution when troubleshooting and carrying out mainignitiwhiceven
Trousystespar
Rean
The systeigniti
9.1
The all thconttwo ecoil b
1
1
the high voltage output with ignition lead (1)tenance or repair work on the on system. The high voltages h occur can cause serious or fatal accidents.
bleshooting on the ignition m should always begin at the
k plug, b 4.5
move the fan housing, b 10.1 d b 10.2
electronic (breakerless) ignition m basically consists of an on module (2) and flywheel (1).
Ignition Module
ignition module accommodates e components required to rol ignition timing. There are lectrical connections on the ody:
533R
A138
TG
2
533R
A139
TG
2
thecirc
Testina spaA newinstalis obtwiringcondi
Ignitiobe ad
Sincein thecanno
9.1.1
Re
Reand
: Pu connector tag (2) for the short uit wire
g in the workshop is limited to rk test. ignition module must be
led, b 9.1, if no ignition spark ained (after checking that and stop switch are in good tion).
n timing is fixed and cannot justed during repair work.
there is no mechanical wear se systems, ignition timing t get out of adjustment.
Removing and Installing
move the shroud, b 8.4
move the fan housing, b 10.1 b 10.2
ll off the spark plug boot (1).
533R
A007
TG
1
: Puret
: Pu
: Tak
: Re
: Re
2
1MS 171, MS 181, MS 211
ll the ignition lead (1) out of the ainer (arrow).
ll off the short circuit wire (1).
e out the screws (arrows).
move the ground wire (2).
move the ignition module (1).
533R
A140
TG
1
533R
A141
TG
1
533R
A142
TG
MS 1
The lead
Chigig
: Reof
Chan
Chre
Tr
: Fi
1
2
171, MS 181, MS 211
ignition module (1) and ignition (2) are an assembly.
eck the ignition module (1) and nition lead and replace the nition module if necessary.
move the insulator (1) and pull f the retainer (2).
eck the retainer and insulator d replace if necessary.
eck the spark plug boot and place if necessary, b 9.4
oubleshooting, b 4.5
t the retainer (1).
533R
A143
TG
2
533R
A144
TG
1
533R
A145
TG
1
Fit sto
: Selug
: Poso the(ar d
: Fit is ainsdow
2
1
2the insulator (1) so that the p (2) is against the upper hole.
cure the insulator (1) with the s (arrows) on the bosses.
sition the ignition module (1) that the ignition lead (2) is on left and insert the screw row) with washer o not tighten down yet.
the wire terminal (1) so that it gainst the stop (arrow) and
ert the screw do not tighten n yet.
533R
A146
TG
1
533R
A147
TG
533R
A148
TG
1
: Fit retfac
Pu th
: Romathe41
the ground wire (2) in the ainer (1) ground wire must e the cylinder (arrow).
sh the ignition module (1) back e flywheel must turn freely.
tate the flywheel until the gnet poles (arrows) are next to ignition module.
533R
A118
TG
2
NS
533R
A149
TG
1
42
: Sl41arth
Prth
Hoanfir
Ti
Re
Ch sum
: Fire
Shorbe nretaicylin
1ide the setting gauge (1) 18 890 6400 between the ms of the ignition module and e flywheel magnet.
ess the ignition module against e setting gauge.
ld the ground wire terminal d tighten down the screws
mly.
ghtening torques, b 3.5
move the setting gauge.
eck operation rotate the flywheel and make re it does not touch the ignition odule.
t the short circuit wire (1) in the tainer (arrow) and reconnect it.
t circuit and ground wires must ext to one another in the ner ground wire must face the der.
533R
A150
TG
153
3RA1
51 T
G
1
: Puretain t
Fit
Rerev
9.2
Ignitiobe ad
Sincein thecanno
9.3
To teseithertesterignitio5910
The igsparksh the ignition lead (1) into the iner (arrow) and pull it a little
he direction of the air filter.
the boot on the spark plug.
assemble all other parts in the erse sequence.
Ignition Timing
n timing is fixed and cannot justed during repair work.
there is no mechanical wear se systems, ignition timing t get out of adjustment..
Testing the Ignition Module
t the ignition module, use the ZAT 4 ignition system 5910 850 4503 or the ZAT 3 n system tester 850 4520.
nition test refers only to a test, not to ignition timing.
533R
A152
TG
Using5910
Benewand
Tig
: Coinptesthe
High
: Crarewthe
The eaccel
If a spsyste
If no s(2), cthe aib 9.
1MS 171, MS 181, MS 211
the ZAT 4 ignition tester 850 4503
fore starting the test, install a spark plug in the cylinder tighten it down firmly.
htening torques, b 3.5
nnect spark plug boot to the ut terminal (1). Push the ters output terminal (3) onto spark plug
voltage risk of electric shock.
nk the engine quickly with the ind starter and check spark in testers window (2).
ngine may start and erate during the test.
ark is visible, the ignition m is in order.
park is visible in the window heck the ignition system with d of the troubleshooting chart, 7
VA21
2RA2
09
32
MS 1
Usin5910
Benean
Ti
Cote
: Atsp
: Ussp
Whilby thsafepartsawayhighconnterm
1
1
High voltage risk of electric shock.71, MS 181, MS 211
g ZAT 3 ignition tester 850 4520
fore starting the test, install a w spark plug in the cylinder d tighten it down firmly
ghtening torques, b 3.5
nnect spark plug boot to the rminal (2).
tach ground terminal (1) to the ark plug.
e adjusting knob (3) to set ark gap to about 2 mm.
e using the ZAT 3, hold it only e handle (4) or position it in a place. Keep fingers or other of your body at least 1 cm from the spark window (3),
voltage connection (2), ground ection (5) and the ground inal (1).
533R
A375
TG
2 3
376R
A135
TG
3 4
5
2
Crarewthe
The eaccel
If a spsyste
If no s(3), chthe aichart,
9.4
The iglead alead iignitio
Re
Pu
: Usspr
Unign
Punk the engine quickly with the ind starter and check spark in testers window (3).
ngine may start and erate during the test.
ark is visible, the ignition m is in order.
park is visible in the window eck the ignition system with
d of the troubleshooting b 9.7
Spark Plug Boot
nition module and ignition re an assembly. If the ignition
s damaged, install a new n module.
move the shroud, b 8.4
ll the boot off the spark plug.
e suitable pliers to pull the leg ing out of the spark plug boot.
hook the leg spring from the ition lead.
ll the boot off the ignition lead.
533R
A153
TG
Usceninsof t
: Pininto
Cowit
: Hosprinto43
e a pointed tool to pierce the ter of the ignition leads
ulation, 95.6 mm from the end he lead.
ch the hook of the leg spring the center of the lead (arrow).
at inside of spark plug boot h Press Fluid, b 16
ld the ignition lead and leg ing together and push them the spark plug boot.
95,6 mm
533R
A186
TG
376R
A136
TG
533R
A154
TG
44
: Mlopl
Do nsilico
Rere
9.5
Re
Blst
Inspect flywheel (1) and magnet poles (2) for cracks or other ake sure the leg spring (arrow) cates properly inside the spark ug boot.
ot use either graphite grease or ne insulating paste.
assemble all other parts in the verse sequence.
Flywheel
move the shroud, b 8.4
ock the piston with the locking rip (1), b 6
533R
A155
TG
533R
A156
TG
1
: Un
If the puller
: Scr111as qua
Taptim
Unthe
1screw the flywheel nut (arrow).
flywheel is stuck, use the .
ew on the puller (1) 6 893 0800 clockwise as far stop and then turn it back a rter turn.
the end of the puller a few es to release the flywheel.
screw the puller and remove flywheel.
533R
A157
TG
533R
A158
TG
533R
A159
TG
damaturne
The fstub mb 16
Onchenec
: Maengstu
Chmonec
Rerev
TigMS 171, MS 181, MS 211
ge. If it is damaged or has d blue, install a new flywheel.
lywheel bore and crankshaft ust be free from grease,
.
machines with ErgoStart, ck the pawls and replace if essary, b 10.4
ke sure the key (arrow) ages the slot in the crankshaft
b.
eck air gap between ignition dule and flywheel and adjust if essary, b 9.1.1
assemble all other parts in the erse sequence.
htening torques, b 3.5
533R
A160
TG
MS 1
9.6 Short Circuit Wire9.6.1 Testing
If thesparthe s
Re
Rean
: Di
Co(a
Se0
The aboureasto be
Se
The infinicircu
If noignititroub
Ch
In
9.6.2 Removing and Installing : Disconnect short circuit wire (1).71, MS 181, MS 211
spark plug, ignition lead and k plug boot are in order, check hort circuit wire.
move the shroud, b 8.4
move the fan housing, b 10.1 d b 10.2
sconnect short circuit wire (1).
nnect the ohmmeter to ground rrow) and the short circuit (1).
t the Master Control lever to .
resistance measured must be t 0 . If it is much higher, the
on is a break and the wire has replaced, b 9.6.2
t the Master Control lever #.
resistance measured must be tely high. If not, fit a new short it wire, b 9.6.2
fault can be found, check the on system with the aid of the leshooting chart, b 9.7
eck ground wire for continuity.
stall in the reverse sequence.
533R
A161
TG
1
The sare codamaharne
Whencare n
Re
Reand
Re
: Pu
: Pureta
: Takthe
1hort circuit and ground wires mbined in a wiring harness. If ged, the complete wiring ss must be replaced.
cleaning the machine, take ot to disconnect wires.
move the shroud, b 8.4
move the fan housing, b 10.1 b 10.2
move the carburetor, b 14.3
ll off the spark plug boot (1).
ll the ignition lead out of the iner (arrow).
e out the screw and remove ground wire (2).
533R
A162
TG
533R
A163
TG
1
2
Puwir
: Refromo
Reb
Puwir
: Discirc(2)
Re
245
ll the short circuit and ground es out of the retainer (arrow).
move the wiring harness (1) m the guide (arrow) do not ve the cable tie.
move the carburetor carrier, 14.7.1
ll the short circuit and ground es out of the guides (arrows).
connect connectors of short uit wire (1) and ground wire
.
move the wiring harness.
533R
A164
TG
1
533R
A165
TG
1
46
: Chanwi
A fauprevwire.groucont
Insta
The withoclarit
: Pucir(a
The guidthe ctie o
1
2
1
1eck the short circuit wire (1) d ground wire (2) and replace ring harness if necessary.
lty ground wire can impair or ent operation of the short circuit For this reason also check the nd wire for contact and inuity.
lling
following steps are shown ut the manifold for greater y.
sh the wiring harness, short cuit wire (1) first, into the guide rrow).
cable tie (2) must rest on the e and point in the direction of ylinder do not move the cable n the wiring harness.
533R
A166
TG
533R
A167
TG
2
: Fit thewirgui
: Puprocon
: Pu(1)(ar
1the wiring harness (1) along housing and push it, ground e first, completely into the de (arrow).
sh ground wire connector with tective tube (2) onto the tact spring (1).
sh short circuit wire connector into receptacle on switch shaft row) as far as stop.
533R
A168
TG
1
533R
A169
TG
1
2
533R
A170
TG
: Pre(1)(ar
The whousiother.
The sloopewith t
: Poaga todisMS 171, MS 181, MS 211
ss the wires into the guides first, then into the guides rows).
ires must be against the ng and must not cross each
hort circuit wire must be d (arrow) so that it can move he switch shaft.
sition the ground wire (1) inst the protective rib (arrow) avoid unintentional
connection.
533R
A171
TG
1
533R
A172
TG
533R
A173
TG
1
MS 1
: Ch cosp
Inb
: Atfir en
Fiwith
In
Chan
Rere
Ti
9.6.3 Ground Wire171, MS 181, MS 211
eck operation the short circuit wires nnector must touch the contact ring (arrow) in position 0.
stall the carburetor carrier, 14.7.1
tach the wires, short circuit wire st, to the guide (arrow) the protective tube (1) must gage the guide.
t the ground and short circuit res in the retainer and connect em up, b 9.1.1
stall the ignition lead, b 9.1
eck air gap on ignition module d adjust if necessary, b 9.1.1
assemble all other parts in the verse sequence.
ghtening torques, b 3.5
533R
A174
TG
533R
A175
TG
1
A fauprevewire. conta
The sare codamaharne
Chandnec
Rehar
9.6.4
Re
: Dislty ground wire can impair or nt operation of the short circuit Always check ground wire for ct and continuity.
hort circuit and ground wires mbined in a wiring harness. If ged, the complete wiring ss must be replaced.
eck for contact and continuity replace wiring harness if essary, b 9.6.1
move and install wiring ness, b 9.6.2
Contact Spring
move the switch shaft, b 12.1
connect the ground wire (1).
533R
A176
TG
1
: Eathe
Chif n
: Puthethe
: Puits into47
se the contact spring (1) over lug (arrow) and pull it out.
eck contact spring and replace ecessary.
sh the contact spring (1) into guide so that it lines up with recess (arrows).
sh the contact spring (1) into seat until the lug (arrow) snaps position.
533R
A177
TG
533R
A178
TG
1
533R
A179
TG
1
48
In
: Puprco
: Poag distall the switch shaft, b 12.1
sh ground wire connector with otective tube (2) onto the ntact spring (1).
sition the ground wire (1) ainst the protective rib (arrow) to avoid unintentional sconnection
533R
A169
TG
1
253
3RA1
73 T
G
1
: Ch thconspr
Thewirhouthe
Rerev
Tigeck operation e short circuit wires nector must touch the contact ing (arrow) in position 0.
ground and short circuit es must be laid close to the sing and properly seated in guides, b 9.6.2
assemble all other parts in the erse sequence.
htening torques, b 3.553
3RA1
74 T
GMS 171, MS 181, MS 211
MS 1
9.7 Ignition System Troubleshooting4971, MS 181, MS 211
Engine does not run
Switch shaft: in position #?
Check the spark plug: Smeared with oil, black?
Sooted? Electrode gap correct?
Contacts shorted? Clean or replace the plug,
b 9.3
Check spark plug boot: Firmly seated on plug (leg spring)?
Leg spring hook in center of ignition lead? Boot damaged?
If necessary, install new spark plug boot and/or leg spring,
b 9.4
Test ignition system:with ZAT 3 or ZAT 4
(use ZAT 3 as main spark gap see TI 32.94),
b 9.3
1
50
1MS 171, MS 181, MS 211
Check flywheel: Have pole shoes turned blue?
Install new flywheel if necessary,b 9.5
Air gap: Check ignition module/flywheel,
reset if necessary, b 9.1.1
Check ignition lead: Severe chafing?
Spark plug boot: Holes/cracks? Resistance: spark plug boot to ground:
spec. 1.5 12 k If necessary, install new spark plug bootand/or ignition lead with ignition module,
b 9.4
Check ground and short circuit wires:
Wire damaged? Connectors firmly seated?
Check continuity, replace wiring harness if necessary, b 9.6.1
3
yes
no
Powerful spark?
2
MS 1
2 35171, MS 181, MS 211
Machine runs trouble-free,no further action necessary
no
Install new ignition module,
b 9.1.1
yes
no
Look for fault in fuel system or carburetor
Check engine for leaks Check position of flywheel on
crankshaft,b 8.2, b 9.5
yes
Check operation of switch shaft:
Short circuit wire chafed? Does contact spring make contact with short circuit wire in position #?
If necessary, install new wiring harness,
b 9.6.2
Powerful spark?
Engine runs
52
10. Rewind Starter
10.1 General
If thebecorewincomthe sbut poutsoil onand stickdetrithe s
In sua fewbasechlorhydr
Careseveuntil resto
BeforewinSTIH
If cloentirthe rand care
Cl
Mac
Reb
10.2 Removing and Installing Check the fan housing and segment and replace if action of the starter rope mes very stiff and the rope ds very slowly or not
pletely, it can be assumed that tarter mechanism is in order lugged with dirt. At very low
ide temperatures the lubricating the rewind spring may thicken
cause the spring windings to together. This has a mental effect on the function of tarter mechanism.
ch a case it is sufficient to apply drops of a standard solvent-d degreasant (containing no inated or halogenated ocarbons) to the rewind spring.
fully pull out the starter rope ral times and allow it to rewind its normal smooth action is red.
re installing, lubricate the d spring and starter post with L special lubricant.
gged with dirt or pitch, the e starter mechanism, including ewind spring, must be removed disassembled. Take particular when removing the spring.
ean all components, b 16
hines with ErgoStart
lieve tension of spring, 10.4
Re
: Turand
Usguarem
: Puoneseg
1
2move the shroud, b 8.4
n the starter grip sideways take out the screws (arrows).
e a screwdriver to pry the hand rd (1) off the boss (arrow) and ove the fan housing (2).
sh the locking tab (arrow) to side and take out the ment (1).
533R
A180
TG
533R
A181
TG
533R
A182
TG
1
nec
: Fit (arpussna
: Fit (aris swa
Tig
1MS 171, MS 181, MS 211
essary.
the segment (1) in the slots rows) in the fan housing, then h it into the locking tab until it ps into position.
and tighten down the screws rows) firmly the hand guard ecured with the screw (1) and sher.
htening torques, b 3.553
3RA1
83 T
G
1
533R
A184
TG
MS 1
10.3 Pawl
Rean
: Gclipoou
Recle
Lugr
Fipe
Chec
: Poitspain
3
: Push the straight part of the spring clip over the starter post 71, MS 181, MS 211
move the fan housing, b 10.1 d b 10.2
rip the straight end of the spring p (1) and ease it off the starter st the rewind spring may pop t during this operation.
move and inspect the pawl (2), an or replace if necessary.
bricate seat of new pawl with ease, b 16
t the new pawl and lubricate its g with resin-free oil, b 16
k that washer (3) is in place.
sition the spring clip (1) so that loop engages the peg on the wl and its curved part (arrow) is
the starter posts groove.
533R
A185
TG
12
533R
A188
TG
1
unt
Rerev
Mach
Re
: Griclipandstamaope
Re(2)
Lubgre
Fit theb
Check
1
2il it snaps into the groove.
assemble all other parts in the erse sequence.
ines with ErgoStart
move the ErgoStart, b 10.4
p the straight part of the spring (1), ease it out of the groove pull the spring clip off the
rter post the rewind spring y pop out during this ration.
move and inspect the pawls , clean or replace if necessary.
ricate seat of new pawls with ase, b 16
the new pawls and lubricate ir pegs with resin-free oil, 16
that washer (3) is in place.
533R
A189
TG
2
3
: Poits pawis i
: Pusprunt
Rerev
10.4
The stensiospring
Puengreli
Renecand
153
sition the spring clip (1) so that loops engage the pegs on the
ls and its curved part (arrow) n the starter posts groove.
sh the straight part of the ing clip over the starter post il it snaps into the groove.
assemble all other parts in the erse sequence.
ErgoStart
pring may still be under n. Always relieve tension of as follows before installing:
ll out the starter rope until the ine turns tension is now
eved.
move the fan housing and, if essary, the segment, b 10.1 b 10.2
533R
A189
TG
54
: Re
: Re
: Pu
: Pu
Re
: Re
Puth
Cl
1
1
2 3 4 3 2move the circlip (1) do not overstretch.
move the washer (2).
ll off the carrier (3).
ll off the spring housing (1).
move the washer.
move the E-clips (arrows).
ll off the pawls (1) and remove e torsion springs.
ean the pawls (1), b 16
533R
A194
TG
3 2 153
3RA1
95 T
G53
3RA1
96 T
G
1
Inscarsprnec
: Fit n
: Pupinlocspr
Ins
1
1
1pect the spring housing (1), rier (2), pawls (3) and torsion ings (4) and replace if essary.
torsion springs in the pawls (1) ote installed position (arrows).
sh the pawls (1) onto the pivot s (2) on the flywheel and ate the ends of the torsion ings against the ribs (arrow).
tall the E-clips.
533R
A197
TG
1 3 4
533R
A198
TG
533R
A199
TG
2
: Fit
: Puthepawpawhou
: Puspr(ar(2)
: Fit
: Ins d
Rerev
1
1MS 171, MS 181, MS 211
the washer (1).
sh the spring housing (2) over starter post and onto the ls in the rope rotor (3) the ls must engage the spring sing.
sh the carrier (1) into the ing housing so that the recess row) engages the spring loop .
the washer (3).
tall the circlip (4) o not overstretch.
assemble all other parts in the erse sequence.
533R
A201
TG
533R
A202
TG
2
3 4
MS 1
10.5 Rope Rotor
Reliesprin
Renean
Mac
Re
All m
: Pu5st
Wstro
Pugrro
Rereb
The tensrewin
Repa
1
2 Install the starter rope, b 10.671, MS 181, MS 211
ving tension of rewind g
move the fan housing and, if cessary, the segment, b 10.1 d b 10.2
hines with ErgoStart
move the ErgoStart, b 10.4
achines
ll out the starter rope (1) about cm and hold the rope rotor (2) eady.
hile still holding the rope rotor eady, take three full turns off the pe rotor.
ll out the rope with the starter ip and slowly release the rope tor.
move the starter rope or maining rope from the rotor,
10.6
system will not be under ion if either the starter rope or d spring is broken.
move the spring clip and wl(s), b 10.3
533R
A204
TG
2
Re
Rewin
: Ca(2)out
Chif n
CoSTb
Lubb
: Fit pos(ar
Fit
Insb
1move the washer (1).
d spring must be relaxed.
refully remove the rope rotor the rewind spring may pop and uncoil.
eck the rope rotor and replace ecessary.
at bore in rope rotor with IHL special lubricant, 16
ricate starter post with oil, 16
the rope rotor (2) on the starter t so that the inner spring loop
row) engages the recess (1).
the washer.
tall the pawl(s) and spring clip, 10.3
533R
A205
TG
533R
A206
TG
2
1
Tenb
Lubpaw
10.6
Renecand
Mach
Re
All m
Reb
The stensiorewin
Rerop
Do no
Re
: Pu(1)
Purop
155
sion the rewind spring, 10.7
ricate the peg(s) on the l(s) with grease, b 16
Starter Rope / Grip
move the fan housing and, if essary, the segment, b 10.1 b 10.2
ines with ErgoStart
move the ErgoStart, b 10.4
achines
lieve tension of rewind spring, 10.5
ystem will not be under n if either the starter rope or d spring is broken.
move remaining rope from the e rotor and starter grip.
t shorten the starter rope.
move the rope rotor, b 10.5
sh the end of the starter rope out a little and undo the knot.
ll the starter rope out of the e rotor and fan housing.
533R
A207
TG
56
Standard Starter Grip
Pugr
: Tish
Thth
: Pugrre
Elastostart Starter Gripll the old rope out of the starter ip.
e one of the special knots own in the end of the new rope.
read the starter rope through e top of the starter grip.
ll the starter rope through the ip until the knot is seated in the cess (arrow).
VA98
2RA0
3653
3RA1
90 T
G
: Us(1)
: Puand
Puslepar
Do noe a suitable tool to pry the cap out of the starter grip.
ll the sleeve, washers, spring rope (arrow) out of the grip.
ll any remaining rope out of the eve. Inspect the individual ts and replace if necessary.
t shorten the starter rope.
165R
A230
TG
1
165R
A231
TG
Ththr
Tieend
Fit
: Pusprsta
Makeremaits be
Poenggrip
Pre
: Ththr(ar
1
1MS 171, MS 181, MS 211
read the new starter rope ough the sleeve.
a simple overhand knot in the of the rope.
the washers and spring.
ll the starter rope with sleeve, ing and washers into the rter grip (1).
sure the washers and spring in on the sleeve while the rope ing pulled into the grip.
sition cap so that its lug ages the slot in the starter .
ss the cap into the starter grip.
read the starter rope (1) ough the guide bushing row).
165R
A233
TG
533R
A208
TG
MS 1
: Thth(a
Seov
: Puin
Inthb
Innean
1 10.7 Tensioning the Rewind Spring71, MS 181, MS 211
read the starter rope (1) rough the side of the rope rotor rrow).
cure the rope with a simple erhand knot.
ll rope back until knot locates recess (arrow) in rope rotor.
stall the rope rotor and tension e rewind spring, b 10.5,