BR400 UD. How to power up Modifying Parts: 3.Exhaust Muffler 1.Intake manifold 2. Carburetor.

BR400 UD

How to power upModifying Parts:

3.Exhaust Muffler

1.Intake manifold

2.Carburetor

How to power up1.Intake manifold

● Cut off the pipe A.

● Remove the seat and then remove the intake manifold.

A

How to power up2. Carburetor

● The modified parts on the carburetor.

● Remove 4 cross-head screws on the tail cover of the carburetor.

How to power up

● The look of disassembling.

● Modify the jets.

For the main jet of 400CC, change from #127.5 to #145 For the slow jet, change from #37.5 to #42.5

For the main jet of 300CC, change from #127.5 to #132.5

How to power up3. Exhaust Muffler

● Remove 3 screws on the tail cover of the exhaust pipe.

● Take off the dB killer and a gasket. (no longer useful).

How to power up● Reinstall all the disassembled parts in order.

● The look of re-assembling.

Inner tube taken off