Download - BR400 UD. How to power up Modifying Parts: 3.Exhaust Muffler 1.Intake manifold 2. Carburetor
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BR400 UD
![Page 2: BR400 UD. How to power up Modifying Parts: 3.Exhaust Muffler 1.Intake manifold 2. Carburetor](https://reader036.vdocuments.site/reader036/viewer/2022062519/5697bfc91a28abf838ca8c67/html5/thumbnails/2.jpg)
How to power upModifying Parts:
3.Exhaust Muffler
1.Intake manifold
2.Carburetor
![Page 3: BR400 UD. How to power up Modifying Parts: 3.Exhaust Muffler 1.Intake manifold 2. Carburetor](https://reader036.vdocuments.site/reader036/viewer/2022062519/5697bfc91a28abf838ca8c67/html5/thumbnails/3.jpg)
How to power up1.Intake manifold
● Cut off the pipe A.
● Remove the seat and then remove the intake manifold.
A
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How to power up2. Carburetor
● The modified parts on the carburetor.
● Remove 4 cross-head screws on the tail cover of the carburetor.
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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
![Page 6: BR400 UD. How to power up Modifying Parts: 3.Exhaust Muffler 1.Intake manifold 2. Carburetor](https://reader036.vdocuments.site/reader036/viewer/2022062519/5697bfc91a28abf838ca8c67/html5/thumbnails/6.jpg)
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).
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How to power up● Reinstall all the disassembled parts in order.
● The look of re-assembling.
Inner tube taken off