68 SR TRIPLEX – CE OWNER'S MANUAL68" SR TRIPLEX – CE NATIONAL MOWER CO. 700 Raymond Ave., P.O. Box ... Phone (651) 646-4079 – Fax (651) 646-2887 OWNER'S MANUAL Includes Operation,
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68" SR TRIPLEX – CE
NATIONAL MOWER CO. 700 Raymond Ave., P.O. Box 14299, St. Paul, Minnesota 55114-0299, U.S.A.Phone (651) 646-4079 – Fax (651) 646-2887
www.nationalmower.com
OWNER'S MANUALIncludes Operation, Maintenance and
Parts Lists for SR 68" and DL 68"
OCTOBER – 2001
68OMCE-10/01-3502
NATIONAL MOWER COMPANY
ONE YEARLIMITED WARRANTY
For the period of one year from the date of purchase (45 days if the productis used for rental purposes), National Mower Company will repair or replace freeof charge, for the original purchaser, any part or parts found by inspection to bedefective by our Factory Authorized Service Station or by the Factory at St. Paul,Minnesota to be defective in material or workmanship or both. All transportationcharges on parts submitted for repair or replacement under this warranty shall bepaid for by the purchaser.
This warranty does not include engines, engine parts or tires which arecovered under separate warranties furnished by their manufacture or supplier.
All service under this warranty will be furnished and performed by our FactoryAuthorized Service Stations.
-THERE IS NO OTHER EXPRESS WARRANTY-
IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY ANDFITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEARFROM PURCHASE OR 45 DAYS IF THE PRODUCT IS RENTED AND TOTHE EXTENT PERMITTED BY LAW, ANY AND ALL IMPLIED WARRANTIESARE EXCLUDED. THE ABOVE REMEDY OF REPAIR AND REPLACEMENTOF DEFECTIVE PARTS IS THE PURCHASER’S EXCLUSIVE REMEDY FORANY DEFECT, MALFUNCTION OR BREACH OF WARRANTY. LIABILITYFOR INCIDENTAL OR CONSEQUENTIAL DAMAGES UNDER ANY AND ALLWARRANTIES IS EXCLUDED TO THE EXTENT PERMITTED BY LAW.
NATIONAL MOWER COMPANY700 Raymond Avenue, St. Paul, Minnesota 55414, U.S.A.
NATIONAL 68" SR & DL TRIPLEX – CE®
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TABLE OF CONTENTSDeclaration Of Conformity ............................................................................... 4Specifications
Dimensions – Mower ................................................................................ 5Engine – Briggs & Straton ...................................................................... 5Disposal Numbers .................................................................................... 5Noise Emission and Vibration .................................................................. 5
Safe Operating Practices ................................................................................ 6Decal (Transfer) Identification ................................................................... 7 & 8Introduction ..................................................................................................... 9Receipt Of Shipment ....................................................................................... 9Uncrating Instructions ..................................................................................... 9Assembly Instructions
Rear Mower .................................................................................... 10 & 11Seat ................................................................................................ 10 & 11Wing Mowers .................................................................................. 10 & 11Engine ............................................................................................ 10 & 11Differential ...................................................................................... 10 & 11
MaintenanceLubrication .............................................................................................. 13Bed Knife Replacement .......................................................................... 14Lapping and Grinding Procedures......................................................... 15
AdjustmentsHeight Of Cut .......................................................................................... 16Reel To Bed Knife Adjustment ............................................................... 16Reel End Play Adjustment ...................................................................... 16Brake Adjustment ................................................................................... 17Wing Mower Drive Belt Tension ............................................................. 17Rear Mower Drive Belt Tension ............................................................. 17Engine Drive Belt Tension ...................................................................... 17Main Drive Belt Tension ......................................................................... 17
Troubleshooting ............................................................................................ 18Wiring Diagram—SR Electrical Interlock ...................................................... 18Parts List
Ordering Information............................................................................... 19Frame and Running Gear ............................................................... 20 & 21Rear End ........................................................................................ 22 & 23Drive Mechanism and Wing Mower Supports ................................ 24 & 25Rear Mower .................................................................................... 26 & 27Wing Mower .................................................................................... 28 & 29Drive and Mower Skids and Shields ....................................................... 30Deluxe 68" Running Gear and Misc. Parts ............................................. 31Deluxe 68" Drive Parts ................................................................... 32 & 33Deluxe 68" Electrical Diagram ........................................................ 34 & 35
68OMCE-10/01-3504
DECLARATION OF CONFORMITYaccording to Directive 89/392/EEC
We NATIONAL MOWER COMPANY..............................................................................................................................................................(Name of supplier)
700 Raymond Avenue, St. Paul, Minnesota 55114 U.S.A...............................................................................................................................................................(Full address of the manufacturer—authorized representative in the community must also give thebusiness name and address of the manufacturer)
declare under our sole responsibility, that the product
68" NATIONAL TRIPLEX MOWER(Make and model)
to which this declaration relates corresponds to the relevant basic safety and health requirements ofthe Directive 89/392/EEC, (if applicable)and to the requirements of other relevant Directives:
EN292-1&2--EN294--EN349..............................................................................................................................................................(Title and/or number and date of issue of the other Directives)
(If applicable)
For the relevant implementation of the safety and health requirements mentioned in the directives,the following standard(s) and/or technical specification(s) has (have) been respected:
ANSI B71.4..............................................................................................................................................................(Title and/or number and date of issue of standard(s) and/or technical specification(s))
St. Paul, MN, USA 10/15/2001
(Place and date of issue) (Name, function and signature of the authorized person)
NATIONAL 68" SR & DL TRIPLEX – CE®
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SPECIFICATIONS
Overall Length .............................................................................................. 79.13" (201 cm)Width, Wing Mowers Folded .......................................................................... 61.8" (157 cm)Width, Wing Mowers Down ............................................................................... 76" (193 cm)Height ............................................................................................................ 39.37"(100 cm)Weight (empty) ......................................................................................... 639.5 lbs. (290 kg)
Engine Type .............................. Forced Air Cooled, 4-cycle, Horizontal Shaft, OHV EngineNumber Of Cylinders ...................................................................................................... OneBore and Stroke .......................................................................... 2.99" x 2.17" (76 x 55 mm)Piston Displacement .................................................................................................... 215ccMaximum Horsepower .................. 7.5 hp (5.6 kW)) / 3600 rpm (Corrected per SAE J1349)Maximum Torque ............................................................ 12.5 ft/lbs (16.5 N-m) at 2500 rpmDirection Of Rotation ............................................ Counterclockwise Facing The PTO ShaftFast Idle Speed .......................................................................................................4000 rpmSlow Idle Speed ......................................................................................................1750 rpmFuel ............................................................................................ Unleaded Gasoline (Petrol)Fuel Tank Capacity .................................................................................... 4.80 US qt (4.54)Minimum Specific Fuel Consumption Ratio ............................... 240 gr/hp-hr (322 gr/kW-hr)Oil ................................................................................................... Engine Oil SAE 10W-30Oil Capacity .................................................................................................. 1.90 US pt (.90)Carburetor ............................................................................. Float Type with Fixed Main JetBalancing ......................................................................................... Reciprocating BalancerIgnition .......................................................................... Flywheel Magneto, Transistor TypeSpark Plug ...................................................................................................... Resistor TypeStarter ................................................. Recoil Starter with Automatic Compression ReleaseGovernor ............................................................................................................. MechanicalLubrication Type ..........................................................Splash with Low Oil Shut-off SystemAir Cleaner ....................................................................................................... Dual ElementMuffler ........................................................................................................... Low Tone TypeLighting Coil ......................................................................................................... 12 V–25 WCharging Coil ................................................................................................................. 10 ANet Weight (Engine) .................................................................................. 59.1 lbs (26.8 kg)Dimensions (L x W x H) ........................... 13.5" x 15.6" x 17.0" (344.5 x 395.5 x 432.5 mm)
Gasoline (Petrol), Lead Free ....................................................................................... 54104Engine Oil .................................................................................................................... 54112Fiberglass Parts ........................................................................................................... 57103Tires ............................................................................................................................. 57502Gear Oil ........................................................................................................................ 54112Grease ......................................................................................................................... 54202Plastic Tanks ................................................................................................................ 57127
Sound*: Operator Position ...................................................................................... 86 dBASound Power Level (LwA) ........................................................................ 99 dBA
Vibration*: Maximum Vibration 16.1 m/s2 RMSLocation ................................................................................................ Left Hand
*Operating Condition: Engine rpm–3400, Unit Stationary
DIMENSIONS & WEIGHT– MOWER
ENGINE – BRIGGS & STRATTON
DISPOSAL NUMBERS
NOISE EMISSION AND VIBRATION
68OMCE-10/01-3506
National Mower Safe Operation PracticesFor Riding Mowers
1. Know control functions and how to stop quickly. READ THE OWNER’S MANUAL. 2. Wear approved safety glasses or goggles when operating the mower. 3. Do not allow children to operate mower. Do not allow adults to operate mower without proper instruction. 4. Do not carry passengers. Keep children and pets at a safe distance from an operating mower. 5. Clear the work place of objects which might be picked up by the blades and thrown. 6. Disengage all reel clutches and shift into neutral before attempting to start the engine (motor). Disengage main
clutch before shifting reel clutches. 7. Disengage power to the reels and stop the engine (motor) before leaving the operator’s position. 8. Disengage power to the reels and stop the engine (motor) before making any repairs or adjustments. 9. Disengage power to the reels when transporting or not in use.10. Take all possible precautions when leaving the mower unattended, such as, shifting into neutral, setting the
parking brake, stopping the engine and removing the ignition key.11. Do not stop or start suddenly when going uphill or downhill. Mow up and down the face of steep slopes – never
across steep slopes. Do not exceed a slope of 25o in any direction.12. Reduce travel speed on slopes and in sharp turns to prevent tipping or loss of control. Use extreme caution
when changing direction on slopes.13. Watch for holes in the terrain and other hidden hazards.14. Watch for dangerous traffic when crossing or near roadways.15. Never direct the discharge of material from operating reels toward bystanders nor allow anyone near the mower.16. Handle gasoline (petro)l with CAUTION - it is highly flammable.
a. Use an approved gasoline (petrol) container.b. Never remove the fuel tank cap or add gasoline (petrol) to a running or hot engine. Never fill the fuel tank
indoors. Wipe spilled gasoline (petrol) immediately.c. Open garage doors to allow ventilation if engine is run inside – exhaust fumes are dangerous. Do not run
engine in any enclosed area.17. Keep the mower in good operating condition. Make sure that all safety switches are operating properly and
all safety guards are in place at all times, except during servicing.18. Keep all nuts, bolts, and screws tight to be sure that the mower is in a safe working condition.19. Never store the mower, with gasoline (petrol) in the tank, inside a building where fumes could reach an open flame
or spark. Allow the engine to cool before storing in any enclosure.20. Keep the engine free of grass, leaves or excessive grease to reduce a fire hazard.21. The mower and reels should be stopped and inspected for damage after striking a foreign object. The damage
should be repaired before restarting and operating the mower.22. Do not change the engine governor settings or overspeed the engine.23. Proceed as follows when mowing:
a. Mow only in the daylight or in good artificial light.b. Never make a cutting height adjustment while the engine (motor) is running.c. Shut the engine (motor) off when removing grass or unclogging reels.
24. This machine is to be used only as a grass cutter or lawn mower.
IMPORTANT
WARNING– California, USA residents are required by law (CA PRC 4442 & CA H & SC 13005) to equip theirengines with spark arresters when operating in flammable vegitation. Arresters must be obtained from yourengine dealer and are not available from National Mower Company.
NATIONAL 68" SR & DL TRIPLEX – CE®
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TRANSFER IDENTIFICATION
1
2
3
4 5
NATIONAL MOWER CO.700 RAYMOND AVE.
ST. PAUL, MINNESOTA 55114 USA651-646-4079 FAX 651-646-2887
YEAR OF MANUFACTURE: 2000POWER RATING: 7.5 (5.6 kW) at 3600 RPM
WEIGHT: 639.5 lbs (290 kg)
68OMCE-10/01-3508
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7
8 9
NO. PART NO. TRANSFER DESCRIPTION
1 07358 Do not exceed 25o slope. Located on main belt shield.2 07358 Manufacturer's identification and specifications. Located
on the main belt shield.3 07358 Read Operator's Manual. Refer to manual for adjustments.
Caution: Machine is used only as a lawn mower. Keepaway bystanders. Located on main belt shield.
4 07363 Sound power level. Located on main belt shield.5 07363 Sound Level, operator's position. Located on main belt
shield.6 07359 Forward, Neutral and Reverse positions. Located on main
belt shield.7 07359 Rear mower clutch engagement. Located on the rear
mower shield.8 07359 Wing mower clutch engagement. Located on main belt
shield.9 07359 Engine clutch lever: Back, Neutral & Forward. Located on
main belt shield.
NATIONAL 68" SR & DL TRIPLEX – CE®
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FIGURE A
CAUTION
Claims for shipping damages must be noted by theconsignee at the point of destination and filed with thetransportation company that delivers the shipment.
CAUTION
INTRODUCTIONThis machine has been designed to meet European
CE Safety Standards. Metric eqivalents are providedwherever possible for users outside the United States.
This manual has been prepared by National MowerCompany as an aid to users for assembly, maintenance,adjustment and ordering replacement parts. Additional
information will gladly be furnished by calling or writing themanufacturer or his authorized agent.
Please furnish us with the Model Number, SerialNumber and Date of Purchase when contacting us aboutyour machine. Designations of right, left, front and rearare used as if the operator was sitting in the mower seat.
NOTE
4. Lift Rear Mower (4, Fig. A) off the crate supportingmembers and set aside for later attachment.
Handle mowers carefully with protective gloves.Reels rotate freely and are very sharp.
5. Make sure Wing Mowers (5, Fig. A) are secure to themower frame with Wing Mower Hooks (15, Fig. B).
6. Knock down all sides of crate and remove. Roll mowerbackwards off of crate base.
UNCRATING INSTRUCTIONS
RECEIPT OF SHIPMENTCarefully inspect your machine and crate for dam-
age that could have occured during shipment. If damagesor shortages are noted, have the transportation company’srepresentative note this on the bill of lading.
In order to prevent possible damage to the machine orpersonal injury, the following uncrating procedure mustbe followed:1. Position Crate 1 as shown in Figure A, on a hard, level surface.2 Cut and remove all Steel Banding (2, Fig. A).3. Remove the entire top of the crate. Unbolt Seat (3,
Fig. A) from crate bracing and lay seat aside forinstallation later. Save the bolt and washer to use formounting the seat mounting member.
68OMCE-10/01-35010
FIG
UR
E B
NATIONAL 68" SR & DL TRIPLEX – CE®
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WING MOWERS
1. Remove Wing Mower Belts (17, Fig. B) from the steer-ing column.
2. Unlock Hooks (18, Fig. B) from Wing Mower Assem-blies (19, Fig. B), lower them carefully to the ground.Slip wing mower belts over Countershaft Pulleys (20,Fig. B).
3. Block mower wheels to prevent mower from movingforward. Pull Wing Mower Assemblies (19, Fig. B)forward so that they slide on Pull Rods (21, Fig. B) andcompress springs. This will allow enough slack toenable belts to be installed over Reel Pulleys (22, Fig. B).
ENGINE
MOWER IS SHIPPED WITH DRY ENGINE. DONOT START ENGINE UNTIL OIL IS ADDED TOCRANKCASE. See Engine Manual for additionalinformation.
DIFFERENTIAL
Grease has been installed in the differential at thefactory. Refer to the Maintenance Section, page 7, foradditional information.
ASSEMBLY INSTRUCTIONS
REAR MOWER
1. Remove two 1/2" x 1-1/2" Hex Head Bolts (1, Fig. B)and nuts from the shipping position in the Seat Hingeassembly (2, Fig. B). Position Seat Hinge Assemblywith pivot facing rearward, over the seat mount of themower frame and fasten with Bolts (1, Fig. B) and locknuts.
2. Pivot Seat Brace (3, Fig. B) from the axle so that thetop end aligns with the tab at the back of the seathinge assembly. Fasten with a 5/16" x 1" Hex HeadBolt, Lock Washer and Hex Nut.
3. Remove the Lifter Tee (4, Fig. B) from the shippingposition in the Pivot Tube (5, Fig. B) and set asidecotter pin and washer for later use. Insert the rod endof lifter tee through the slotted hole in the pad on therear mower frame and secure with the cotter pin andwasher as shown.
4. Fasten Rear Mower Pull Rod (6, Fig. B) inner leg byremoving Bolts (7, Fig. B) and reinserting it throughpull rod and attaching flanges on tractor axle. Notethat Spacers (8, Fig. B) must be in each pivot point toallow free movement of the pull rod.
5. Attach Pull Rod (6, Fig. B) to Pivot Tube (9, Fig. B) withPin (3, Fig. K on page 17) and Spacers (1, Fig. K).NOTE: Before completing assembly, it will be neces-sary to refer to the rear Mower Drive Belt Tensionsection and Figure K, page 17 for adjusting belttension.
6. Install Rear Mower Belt (10, Fig. B) from CountershaftPulley (11, Fig. B) to outer Drive Pulley (12, Fig. B).Idler Pulley (13, Fig. B) must ride on top of lower beltto provide proper tension. NOTE: It will be necessaryto raise rear mower to allow enough slack to get beltover pulleys.
SEAT
1. Fasten Seat (15, Fig. B) to seat mounts by threadingfour 5/16" x 1" Hex Bolts (16, Fig. B), through 5/16"lockwashers, through holes in seat mounts and intothe threaded holes in the bottom of the seat.
68OMCE-10/01-35012
OPERATION
FIGURE C
The following is a description of the machine controlsand their function. Refer to Figure C.1. Engine Clutch Lever (labeled Mowing Clutch) –Engages power for travel and mowing. Down position isdisengaged and up position is engaged. IMPORTANT –Engage slowly before full engagement. Always disengagethe drive when stopping or leaving the machine. SeeCaution Decal.
The engine clutch lever has an electrical interlock andengine will not start if clutch is engaged. For added safety,the interlock system should be checked periodically toensure that it is adjusted to function properly.2. Wing Mower Clutch – Engages drive to wing mowers.Pull lever back and down to engage. Never engage driveunless wing mowers have been lowered to cutting position.3. Ignition Key Switch – Provides a means to secure themower when unattended. Turn the key clockwise tounlock the ignition.4. Throttle Control – Regulates mowing and travel speeds.Moving the control handle back or lowering it will reduceengine speed for starting and idling engine. Push forwardto increase engine speed. Never operate mower at speedsfaster than necessary to do a good, safe job.5. Brake – Is designed to slow the mower and lock the rearwheels in the full stop position. Depress the foot pedal toengage. Note: It is best to slow the mower with the throttleand then disengage clutch lever before applying brake.This prevents excessive wear and engine overload.
6. Parking Brake Lever – Provides a lock for the brake.Push brake lever forward, over center, to lock. Pullingbrake lever back, toward the rear of the machine willdisengage the brake. 7. Shifter Lever – Located on the mower differential, thiscontrol has three positions: Forward, Neutral (centerposition), and Reverse. The lever must be pulled towardthe center of the machine to clear the notch in the stop discand positioned securely in the new notch.IMPORTANT: Never shift while machine is in motionbecause it could cause damage to the gears. Alwaysdisengage engine clutch before attempting to shift. 8. Rear Mower Clutch Shifter Lever – Engages driveto the rear mower. Pull lever forward and toward thecenter of the machine to engage sliding jaw clutch. Todisengage, pull lever forward and out to engage lockingpin. Never engage the drive unless the rear mower hasbeen lowered to the cutting position. 9. Rear Mower Lifter Handle – Raises rear mower to thetransport position. Pull handle up, forward and over centerto lock it in an up position.10. Wing Mower Lifter Handles – Raises wing mower tothe transport position. Lift wing mowers until they can besecured with hooks on frame.
Moving machinery can be dangerous if not operatedproperly. Follow all safe operating suggestions listed onSafe Operation Practices, Page 6.
NATIONAL 68" SR & DL TRIPLEX – CE®
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grease be checked once each year. Check grease levelby loosening the bolts in the differential case flanges andspreading case halves. It is not necessary to totallydisassemble the case or remove the wheels for thisinspection. Add Multi-purpose Gear Grease such asPennzoil No. 303 or equivalent if necessary. Total greasecapacity is 1-1/2 pounds.
Do not use oil in the differential case in placeof grease–it will leak through the seals.
MAINTENANCELUBRICATION
Figure D shows the top view of the 68" Triplex Mowerwith guards removed. Lubricate the machine at therecommended locations and intervals using the properlubicants to ensure maximum service and long life of yourmachine. Refer to the engine manual (separatelyfurnished) for proper lubrication and maintenanceinstructions.
Since the mower does not operate at high speeds, thegrease level in the differential is not critical providing thatthere is sufficient grease to coat the gears.
Unless leakage is evident, it is recommended that the
FIGURE D
LUBRICATION CHART
ITEM GREASE OIL FEQUENCY
1
2
3
4
8 Hours
8 Hours
30 Hours
YearlyGear Grease
Figure E shows the top view of the leftwing mower with guards removed andshows the proper lubrication locations.These areas on both wing mowers mustbe free of dirt and grass clippings and bewell lubricated for proper drive belt ten-sion and operation. Support collars for thewing mower pull rods must be kept inalignment to maintain belt tension.
IMPORTANT
FIGURE E
68OMCE-10/01-35014
BED KNIFE REPLACEMENT
FIGURE F
When the bed knife becomes damaged or too worn tokeep sharp, it must be replaced. Design improvementshave made bed knife replacement easier with bolt-onconstruction. Follow the procedure below.
1. The backbar (1, Fig. F), bed knife (2, Fig. F) andfasteners have been assembled at the factory undertension. To ease replacement and prevent misalign-ment of components, the leading edge of the backbarmust be tack welded two or three places before the oldfasteners are removed.
2. Remove shoulder nuts (3, Fig. F) and flat headscrews (4, Fig. F). If shoulder nuts are badly rusted or
corroded, they may have to be cut off and screwsdriven out to be removed.
3. Clean the bottom surface of the backbar formaximum metal contact with the new bed bar.
4. Fasten the new bed knife to the bottom of thebackbar in the position shown (bent edge up). Shoul-der of shoulder nuts must be seated firmly in thebackbar and screws must be flush with the bottom ofthe bed knife.
5. Torque shoulder nuts 35 to 40 ft/lbs.
NATIONAL 68" SR & DL TRIPLEX – CE®
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FIGURE G
INTRODUCTION
Back lapping is a very important step in maintaining sharpreel blades on the rear and wing mowers.
This procedure should be performed when the reel bladesand the bed knife become slightly rounded and the grassis not cut cleanly with only a slight bed knife adjustment.Also, after grinding the bed knife and reels, you shouldback lap to establish a perfect match between the bedknife and reel blades.
RECOMMENDED STEPS
1. Adjust the bed knife to the reel so that the bed knife islevel with the reel and light contact is maintained.
2. Reels must be run in a reverse direction to be lapped.Remove the lower drive belts and attach a back lappingmachine (not supplied by National Mower) to the reels.Follow the instructions furnished by the machine manu-facture.
FIGURE H
Many types of compounds are available for lapping.However, we recommend a good pre-mixed water solublecompound. Many different grit ranges are available. Pre-mixed compound saves the time required to mix, eliminatesthe waste of abrasive, rinses off easily with water and isavailable in all grit ranges from course to extra fine.
4. Stop the reel and examine both bed knife and reelblades to see that the cutting edges are uniformly sharp.If not, gradually tighten the reel adjuster bolts (see FigureI, Page 16) and repeat Step 3 untill the proper sharpnessresults.
5. Rinse off the compound thoroughly with water toremove all abrasive. Check for sharpness and readjustthe bed knife if necessary. Reel to bed knife contactshould be adjusted to easily cut a sheet of paper (seeAdjustments, Page 16 for detailed instructions).
3. Apply the lapping compound with the reels running,using a 2" or a 3" brush. Apply the compound evenly to themoving blades.
Be extremely careful not to let the brush, yourfingers or your clothing get caught in the reels.Use approved safety glasses to protect youreyes from flying particles and abrasives.
GRINDING
Reels must be ground at 25° in the direction shown belowby the arrow in Figure G. Back grind until reel blades arefree from roundness, dents and nicks. Spin grind toremove all burrs. All blades must be on the same diam-eter.For maximum cutting efficiency, grind bed knife top andfront edges at 5° as shown in Figure H.
BACK GRIND IN THEDIRECTION
OF THE ARROW AT 25O
Note centerlinePOSITION OF
REELTO THE BLADE
25O
5O
GRIND BED KNIFEAT ANGLES SHOWN
5O
LAPPING PROCEDURE
68OMCE-10/01-35016
ADJUSTMENTS
To ensure safety, all of the following adjust-ments must be made only after the engineclutch lever has been disengaged and theignition key and spark plug wire have beenremoved.
HEIGHT OF CUTThe height of cut is variable and may be adjusted on
both wing mowers and the rear mower by loosening thetop and bottom Adjusting Nuts (1, Fig. I) which hold RollerAdjusters (2, Fig. I) in Roller Brackets (3, Fig. I). Roller (4,Fig. I) may then be moved up and down.
It is important to get all rollers adjusted to the sameheight so that there will be uniform cutting across the
FIGURE I
NOTEGuards removed or cut
away to show detail
entire width of the mower. Do not adjust by sight. Place themower on a hard, level surface. Loosen the AdjustingNuts (1, Fig. I) on each side of reel assemblies and placea board or gauge plate of the desired height under eachbed knife back bar. Tighten bolts securely.
REEL TO BED KNIFE ADJUSTMENTThe reel is adjusted to a fixed position bed knife. This
construction allows a more rugged and durable frame andretains the proper adjustment longer. The Reel AdjusterBolt (5, Fig. I) regulates reel distance from the bed knife.
To reduce the distance, turn the upper hex adjuster nuton each side of the reel down. Proceed slowly and do notoveradjust—use about 1/8 of a turn on each side at first.Do not adjust one side more than the other unless the reelis obviously out of alignment. Do not get the reel so tightthat it is hard to turn by hand. A too tight reel will wear muchfaster. Ideally, the reel should “wipe” or lightly touch thebed knife. It is not necessary to adjust or change theposition of the lower adjustment nut.
Proper cutting action may be tested by holding paperstrips between the reel and the bed knife. Turn the reel byhand and check to see if the assembly cuts the paper allthe way across the width of the bed knife. Make sure thatthe adjusting and the locking nuts on both side aretightened securely.
Handle reel assemblies carefully withprotective gloves.
Reels rotate freely and are very sharp.Special care should be taken in the area
where the reel contacts the bed knife.
REEL END PLAY ADJUSTMENTWith extended use, normal wear of the reel bearings
will cause end play. This condition could cause unevenwear to mower parts and uneven cutting of turf.
Test for end play periodically by trying to move the reelfrom side to side in the frame. If there is ANY movement,adjust the bearings by loosening the lock nut on theadjustment bolt (6, Fig. I) which is located on the insideright end of the reels, and turning the adjustment bolt INone half turn or less. Do not overtighten. An overtightenedbearing will cause excessive bearing wear. Test again forend play and if reel is rotating freely and end play is notnoticeable, tighten the lock nut.
NATIONAL 68" SR & DL TRIPLEX – CE®
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BRAKE ADJUSTMENT
The foot brake is properly adjusted if it slows themachine when depressed and can be locked when thepedal is depressed fully.
Adjust brake tension by removing cotter pin and brakepedal pin and turning brake clevis located under pedal onbrake rod. When adjustment is complete, attach clevis topedal with pin and cotter pin.
WING MOWER DRIVE BELT TENSION
Proper Belt tension allows mowers to be driven withoutslippage but loose enough to be deflected slightly at apoint midway between the pulleys. An overtight belt willcause excessive bearing wear and a slipping belt causesexcessive belt wear. IMPORTANT: Never allow oil to geton the belt which could cause slipping.
Adjust tension by loosening set screw (Fig. E) in thewing mower pull arm, sliding the mower rearward andretightening set screw.
REAR MOWER DRIVE BELT TENSION
Follow the recommendations above for determiningproper tension and refer to Figure J.
Spacers (1, Fig. J) are provided on the rear mower PullRod (2, Fig. J) to adjust the belt tension. Remove Pin (3,Fig. J) from the end of the pull rod and slip out the pull rodfrom the Pivot Tube (4, Fig. J). Move as many spacers asnecessary to the location indicated and reassemble.
ENGINE DRIVE BELT (Engine to Main Countershaft)
Belt tension is increased by loosening the four enginemounting bolts and sliding the engine forward in theslotted frame holes. Test for the proper tension as detailed
for the wing mower adjustment. When tension is correct,tighten all the bolts securely.
MAIN DRIVE BELT (Main Countershaft to Rear Drive)
Belt tension is increased by loosening the four boltsholding the Main Countershaft Housing (45, Fig. 3) andsliding the housing forward in the slotted frame holes.NOTE - It will probably be necessary to loosen or removebelt guards to reach the adjustment bolts. Also, if this beltis adjusted, it will probably be necessary to readjust theengine belt.
FRONTOF
MACHINE
NOTEGuards removed
to show detail
FIGURE J
68OMCE-10/01-35018
Engine will not start Turn ignition switch to onEnsure that there is sufficient gasoline (petrol) in the tankMake sure safety switch is making contact and mowing clutch is downLook for a loose wire on Ignition or spark plug wire not connectedOperator must be positioned on seat to depress presence switchesInterlock system inoperative—check wiring, see Figure K
Tractor will not move Gear selector must be in one of the drive positionsforward Engine drive clutch must be engaged (rearward and up)
Drive belts too loose (see page 17)Visually check to see that pulleys are not slipping on shaftsIf everything above is OK, check for a damaged gear in the gear box
Tractor will not move Same as above. If all of the above check OK, check the reverse gear in therearward gear box
Tractor will not stop Ensure that the main clutch is disengaged (brake will not stop engine)Brake adjustment or service may be needed (see page 17)
Wing and/or rear mow- Bed knife to reel position may be out of adjustment (see page 16)er will not cut Drive belts or drive chains may need tightening
Visually check that both the drive pulleys and the shafts are rotating
Cutting units will not turn. Clutches may not be engagedLook for anything that could be jammed between the reel and the bed knifeDrive belts or drive chains may need tighteningVisually check that both the drive pulleys and the shafts are rotating
Units will not stop turning Disengage all clutches
Uneven cut Height of cut not the same on each cutting unit (see page 16)Check to see if any part is bentSomething jammed in cutting unit pivots, not allowing them to float
Cutting Units
Situation Things To Check
All adjusting must be made with the engine off.Do not do any investigation of the working parts of the machine with the motor running.Always turn the engine off!
Situation Things To Check
Tractor Unit
TROUBLE-SHOOTING
Electrical System (DL 68" only) Check wiring connections and switch operation—see Figure 9, page 34
NATIONAL 68" SR & DL TRIPLEX – CE®
19
PARTS LIST
Note: For your records and future ordering, fill in the following information.
DATE PURCHASED MODEL NO. SERIAL NO.
ORDERING INFORMATION
When ordering replacement parts, always furnish:1. Your complete name, address and phone number.2. Model Number and Serial Number (stamped on the main frame
rear axle gusset below seat).3. Part Number (it is recommended that the correct number be verified
with a current Master Price List).4. The full Description of the part.5. Quantity desired (quantity shown is the total number of parts con-
tained in the particular view shown).
If the Part Number and the Description of your order do notagree, the Part Number will be used to fill your order.
FIGURE K
INTERLOCK
CONNECTOR
INTERLOCKMODULE ASSY.
204988
GROUND
TOKEY
SWITCH
NEUTRAL STARTSWITCH N/O
07035
ENGINE
OPERATOR PRESENCESWITCH N/O
07035
OPERATORPRESENCESWITCH N/O
07035
Yellow
YellowBrown
Red
YellowBlack Black
A B C D E F
68OMCE-10/01-35020
FIG
UR
E 1
WH
EN O
RD
ERIN
G, S
TATE
TH
E M
OD
EL A
ND
SER
IAL
NU
MB
ERS
OF
THE
MO
WER
NATIONAL 68" SR & DL TRIPLEX – CE®
21
____
____
____
____
____
____
____
____
____
____
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____
____
____
____
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___
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____
____
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____
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__
____
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____
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_
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____
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____
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_
____
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____
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____
____
____
____
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____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
__
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
__
____
____
____
____
____
____
____
____
____
____
____
____
____
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___
FIG
UR
E 1
— F
RA
ME
& R
UN
NIN
G G
EAR
1 1 2 1 2 6 1 1 2 1 1 1 1 1 1 4 2 2 1 1 1 1 1 1 — 1 1 1 1 1 1 2 2AR
2 2 1
SEAT
MO
UN
TFR
AME
REA
R T
IRE
& W
HEE
L AS
SEM
BLY
FOO
T R
EST,
Lef
t Han
dBU
SHIN
G, A
xle
Pivo
tBU
SHIN
G, S
pind
le a
nd S
teer
ing
Post
DR
AG L
INK
KIN
G P
IN, L
eft H
and
TIR
E &
WH
EEL
SHAF
T, S
teer
ing
AXLE
ASS
EMBL
Y, F
ront
TIE
RO
DPI
N, C
levi
s Ti
e R
odKI
NG
PIN
, Rig
ht H
and
BUM
PER
, Fro
ntBE
ARIN
G, W
heel
Hub
DU
ST C
AP, 3
/4'’
I.D.
DU
ST C
AP, 7
/8'’
I.D.
CLE
VIS,
Thr
eade
d, T
ie R
odPE
DAL
, Bra
keSW
ITC
H, S
afet
yFO
OT
RES
T, R
ight
Han
dSW
ITC
H, I
nter
lock
GU
ARD
, Mai
n Be
ltN
ot u
sed
STEE
RIN
G W
HEE
LSE
ATC
OLL
AR, S
teer
ing
Shaf
tTH
RO
TTLE
CO
NTR
OL,
(Inc
lude
s co
ndui
t and
wiri
ng)
BRAC
KET,
Thr
ottle
Con
trol
SWIT
CH
, Key
, Brig
gs &
Stra
tton
and
Kaw
asak
iH
ING
E, S
eat
SPR
ING
, Sea
tD
ECAL
S (T
rans
fers
) for
CE
Mod
els
— S
ee P
ages
7 &
8BA
LL J
OIN
TSW
ITC
H, S
eat
BRAC
KET,
Sea
t Sw
itch
Item
Des
crip
tion
Part
No.
Qty
.
2008
1820
0002
0701
820
0085
2019
6106
002
0901
420
0193
0703
820
0094
2001
8620
1851
0400
320
0196
2000
3306
112
0260
202
603
2008
6320
0104
0703
5 2
0013
920
4988
0901
6
—20
0200
0703
620
0199
0703
220
0203
0703
420
0814
0451
2--
----
----
2008
6707
035
2049
87
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
68OMCE-10/01-35022
WH
EN O
RD
ERIN
G, S
TATE
TH
E M
OD
EL A
ND
SER
IAL
NU
MB
ERS
OF
THE
MO
WER
FIG
UR
E 2
NATIONAL 68" SR & DL TRIPLEX – CE®
23
______
______
______
______
______
______
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______
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______
______
______
______
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___
______
______
______
______
______
______
______
______
______
______
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______
______
______
______
______
______
______
______
______
______
______
______
___
______
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______
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______
______
______
______
______
______
______
______
______
______
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______
______
______
______
______
______
______
___
______
______
______
______
______
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______
______
______
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______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
__
______
______
______
______
______
______
______
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______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
__
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
___
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 34 35
0450
220
0675
2000
6407
007
0402
104
022
2000
6120
0103
0610
208
010
2014
3208
037
2014
3320
0676
0610
107
003
2002
3420
0051
0400
820
0054
2000
5006
003
2000
4920
0069
0700
920
0065
2000
7906
005
2006
8003
504
2000
8403
503
2000
7506
004
Item
Part
No.
Des
crip
tion
1 1 1 1 1 1 1 1 2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 4 1 1 1 2 1 1 1 1 1 2Qty
.
SPR
ING
, Shi
fter L
ever
BUSH
ING
, Shi
fter L
ever
Bus
hing
SHIF
TER
LEV
ERG
RIP
, Shi
fter
CLE
VIS,
Bra
kePI
N, B
rake
Ped
al, 3
/8" x
1-1
/4"
STO
P D
ISC
, Shi
fter
RO
D U
NIT
, Bra
keN
EED
LE B
EAR
ING
, Rea
r Cou
nter
shaf
tU
-BO
LT, S
hifte
rBR
ACKE
T,Pa
rkin
g Br
ake
Pull
RO
D, F
orm
ed, P
arki
ng B
rake
LEVE
R, P
arki
ng B
rake
BUSH
ING
NEE
DLE
BEA
RIN
G, I
nter
med
iate
Sha
ftG
ASKE
T, B
ack
Plat
e C
over
CO
VER
, Diff
eren
tial C
ase,
Insi
deSL
IDIN
G W
ASH
ER, D
iffer
entia
l Cas
ePI
N, S
prin
g (R
oll P
In),
5/16
" x 1
-1/8
"G
EAR
, Shi
fting
, 11
Toot
hG
EAR
, Rev
erse
BUSH
ING
, Rev
erse
Gea
rSH
AFT,
Rev
erse
Gea
rPI
NIO
N, D
iffer
entia
lG
ASKE
T SE
T, D
iffer
entia
lC
OVE
R, D
iffer
entia
l Cas
e, O
utsi
deH
UB,
Rea
r Whe
el, R
ight
BUSH
ING
, Rea
r Whe
el H
ubD
UST
WAS
HER
, 1-1
/8"
O-R
ING
, 1-1
/8"
SPLI
T D
ISC
SEA
L, W
heel
Hub
, Rig
ht R
ear
SEAL
, Oil
AXLE
ASS
EMBL
Y, R
ear
BUSH
ING
, Bul
l Gea
r
0901
220
0066
2000
7002
607
2000
8806
103
0251
003
510
0251
006
104
2006
8720
0821
2006
8520
0688
2000
9520
0096
2000
9004
016
0401
304
020
2000
9903
502
0260
303
618
2000
9704
012
2000
5504
011
2001
0202
602
0351
120
0056
2000
6320
0676
Des
crip
tion
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67
RET
AIN
ING
RIN
G, P
inio
n ge
arBU
LL G
EAR
ASS
EMBL
Y, C
ompl
ete
SHAF
T U
NIT
, Int
erm
edia
teW
ASH
ER, 1
-1/8
" I.D
.SL
EEVE
, Axl
e Be
arin
gBE
ARIN
G, R
ight
Axl
eSP
ACER
, Rig
ht A
xle
SEAL
, R
ear A
xle
WAS
HER
, Bea
ring,
Lef
t Axl
e, 1
-1/8
"BE
ARIN
G, L
eft A
xle
SHIM
, Lef
t Axl
e, 1
0 G
a.SH
IM, L
eft A
xle,
14
Ga.
SPAC
ER, L
eft A
xle,
1/3
2"SH
IM, A
xle
Spac
er, 2
2 G
a.C
OLL
AR, R
ear A
xle
CAP
, Lef
t Axl
eW
HEE
L H
UB,
Lef
t Rea
rPI
N, C
olla
r, R
ear A
xle,
1/4
" x 1
-3/4
"KE
Y, W
oodr
uff,
#11
LOC
K R
ING
, 7/8
"BR
AKE
BAN
D A
SSEM
BLY
O-R
ING
, 7/8
"D
UST
CAP
, 7/8
"PU
LLEY
, Ste
pBR
AKE
DR
UM
KEY,
Woo
druf
f, #9
SHAF
T, S
hifti
ng C
ount
ersh
aft
LOC
K R
ING
, 3/4
"LE
VER
, Bra
ke B
and
DU
ST C
AP, 3
/4"
O-R
ING
, 3/4
"C
OU
NTE
RSH
AFT
CAR
RIE
R U
NIT
, Shi
fting
CAR
RIE
R, S
hifte
rBU
SHIN
G, S
hifte
r Lev
er
Qty
.
1 1 1 1 1 1 1 1 1 1AR AR AR AR
1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
FIG
UR
E 2
— R
EAR
EN
D
Item
Part
No.
68OMCE-10/01-35024
WHEN ORDERING, STATE THE MODEL AND SERIAL NUMBERS OF THE MOWER
FIG
UR
E 3
NATIONAL 68" SR & DL TRIPLEX – CE®
25
ARM
, Cou
nter
shaf
t Idl
erBR
ACKE
T, Id
ler P
ivot
STU
D, B
elt G
uide
BELT
GU
IDE,
Low
erBE
LT G
UID
E, U
pper
RO
D, M
ain
Clu
tch,
Upp
erR
OD
, Mai
n C
lutc
h, L
ower
PULL
EY, M
otor
BELT
, Eng
ine,
Kaw
asak
i, 68
44 G
ates
Rat
edKE
Y, S
quar
e, E
ngin
e,AR
M, M
ain
Belt
Idle
rSP
RIN
G, M
ain
Belt
Idle
r Arm
LEVE
R, E
ngin
e C
lutc
hKN
OB,
Clu
tch
Leve
rG
UAR
D, E
ngin
e C
lutc
hPU
LLEY
, Mai
n C
ount
ersh
aft
CO
UN
TER
SHAF
T, M
ain
BELT
, Driv
e, B
66KE
Y, W
oodr
uff,
#11
BUSH
ING
, Mai
n C
ount
ersh
aft H
ousi
ngH
OU
SIN
G, M
ain
Cou
nter
shaf
tST
EP P
ULL
EY, M
ain
Cou
nter
shaf
tTR
ANSF
ER S
ET, 6
8" T
riple
x - C
EG
UID
E, B
elt,
Hig
h Sp
eed
Pulle
y
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
____
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
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______1 1 1 2 2 1 1 1 1 2 2 2 4 2 2 1 2 2 1 1 1 1 1 2 1 1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
0702
320
0167
2001
7020
0182
0450
320
0172
2006
5520
0656
2001
3707
226
2018
8020
0151
0260
220
1536
0450
520
0128
0361
506
105
2001
3603
603
0390
120
0135
0360
703
608
2001
79
GR
IP, L
ever
, '96
and
up
LEVE
R, L
ower
Cou
nter
shaf
t Con
trol
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ock
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ING
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ount
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aft I
dler
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trol
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OK,
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g M
ower
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t Han
dH
OO
K, W
ing
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er, R
ight
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dPU
LL A
NG
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ing
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er, R
ear
GR
IP, W
ing
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er A
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N, W
ing
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er A
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ing
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er, L
eft a
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ight
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G, W
ing
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ull R
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IER
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.D
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iptio
nQ
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______
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_
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
2001
7620
0173
2024
4520
1541
2015
3820
0165
0802
103
609
0390
320
0208
2001
8404
501
2001
6307
024
0900
203
606
2001
5703
902
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306
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2001
5420
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FIG
UR
E 3
— D
RIV
E M
ECH
AN
ISM
& S
IDE
SUPP
OR
TS
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 6 2 1 1 1 1
68OMCE-10/01-35026
WH
EN O
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TATE
TH
E M
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E 4
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eel
End
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lds
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show
n. S
ee F
igur
e 6
NATIONAL 68" SR & DL TRIPLEX – CE®
27
FIG
UR
E 4
— R
EAR
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2620
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______
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109
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No.
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crip
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Qty
.D
escr
iptio
nQ
ty.
Item
Part
No.
______
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______
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______
______
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______
______
____
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______
______
______
______
______
______
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______
______
______
______
______
______
______
______
______
______
______
_____
____
68OMCE-10/01-35028
FIGURE 5
NATIONAL 68" SR & DL TRIPLEX – CE®
29
________________________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________________
________________________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________
________________________________________________________________________________________________________________________________________________
1 201513 BRACKET, Shield 42 200235 UPRIGHT, Shield 43 203250 ROLLER 24 203248 ROLLER BRACKET, L.H. 25 302847 ADJUSTER, Roller, L.H. 2
302846 ADJUSTER, Roller, R.H. 26 201775 FRAME, Bed Knife, Bolt-on 27 201460 SCREW, Flat Head 14
201802 NUT, Bed Knife Screw 148 201504 BED KNIFE, 21", 29 04549 SPRING, Reel Adjusting 2
10 200236 REEL TAKE-UP ASSEMBLY 411 201734 REEL CARRIER ASSEMBLY, Left Hand 212 06120 BEARING, Reel, (Includes Race) 413 200296 REEL ASSEMBLY, 6 Blade 214 201781 FRAME, Wing Mower 215 200256 ADJUSTING SCREW & NUT, Bearing 216 201437 TAKE-UP WASHER, Reel Bearing 217 201383 CAP SCREW (Special), Pulley Scraper 218 200287 PULLEY SCRAPER 219 201735 REEL CARRIER ASSEMBLY, Right Hand 220 03932 BELT, A35, Wing Mower 221 03601 PULLEY 222 201520 SHIELD, Right Hand 1
201521 SHIELD, Left Hand 123 203172 ROLLER BRACKET, R.H. 2
Item DescriptionPart No. Qty.
FIGURE 5 — WING MOWERS
68OMCE-10/01-35030
___________________________________________________________________________________________________________________________________________________________
1 203728 SKID BAR, L.H. 12 202959 SHIELD, Wing Mower 33 201585 SKID, Mower 24 203727 SKID BAR, R.H. 25 202410 GUARD, Inside, Rear Mower 16 202281 CHAIN GUARD, Rear Mower 1
Item DescriptionPart No. Qty.
FIGURE 6 — SKIDS, REEL END SHIELDS & GUARDS
FIGURE 6
NATIONAL 68" SR & DL TRIPLEX – CE®
31
________________________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________
___________________________________________________________________________________________________________________________________
1 07065 KEY SWITCH 12 07064 AMPMETER 13 07063 HOURMETER 14 09098 DASHBOARD 15 09099 GUARD, Main Belt 16 201994 EXTENSION, Main Belt Shield 17 201996 STEERING WHEEL, DL68 18 204987 BRACKET, Seat Switch 19 07035 SAFETY SWITCH, Seat 2
10 09101 COVER, Battery 111 201754 HOLDOWN, Battery 112 201582 BATTERY BOX 113 08057 ROD, Side Post Battery 214 201925 FOOT REST, Left 115 07237 TIRE, Deluxe Wide 216 07572 INTERLOCK 1
Item DescriptionPart No. Qty.
FIGURE 7 — DL 68" RUNNING GEAR & MISC. PARTS
FIGURE 7
68OMCE-10/01-3503226
________________________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________
1 09100 GUARD, Engine Clutch 12 201881 RETAINER, Mowing Belt 13 201884 RETAINER, Transport Belt 14 201890 MOUNT, Belt Guides 15 201872 STEP PULLEY, Main Countershaft 16 03603 PULLEY, Transport, Main Countershaft 17 02507 Washer, 10 GA. 28 03502 O-RING, 7/8" Dia. 29 06101 NEEDLE BEARING 2
10 03902 BELT, Drive, B66 111 03655 PULLEY, Main Countershaft 112 04013 KEY, Woodruff, #11 313 201871 COUNTERSHAFT, Main 1
Item DescriptionPart No. Qty.
FIGURE 8 — DL 68" DRIVE PARTS
FIGURE 8
NATIONAL 68" SR & DL TRIPLEX – CE®
33
14 201740 HOUSING, Main Countershaft 115 200208 KEY, Square, Engine 216 03926 BELT, Engine, Transport, 6841 Gates Power Rated 117 202071 PULLEY, Engine, Transport Belt 118 03903 BELT, Engine, Mowing, 6844 Gates Power Rated 119 03609 PULLEY, Engine, Mower Belt 120 202780 BELT GUIDE WELDMENT, Engine 121 202446 STUD, Belt Guide 122 201946 BRACKET, Idler Pivot with Bushings 123 200530 GUIDE, Belt 124 202441 SPRING, Transport Pedal Return 125 03608 PULLEY, Idler 126 201721 FOOT LEVER 127 201728 ARM, Idler, Lower Countershaft 128 201730 ARM., Idler, Mowing Belt 129 03607 PULLEY, Clutch Lever 130 201718 PULLEY LEVER, Transport 131 201889 GUIDE, Belt 132 201919 ROD, Transport Clutch 133 202440 SPRING, Transport 134 201966 PEDAL, Transport 135 200135 COUNTERSHAFT, Lower 136 201926 CARRIER, Lower Countershaft 1
________________________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________________
Item DescriptionPart No. Qty.
68OMCE-10/01-35034
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NATIONAL 68" SR & DL TRIPLEX – CE®
35
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____
____
____
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Item
Des
crip
tion
Part
No.
Qty
.
FIG
UR
E 9
— D
L 68
" EL
ECTR
ICA
L D
IAG
RA
M
68OMCE-10/01-35036
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