PAGE 43
CHAPTER 4 FUEL SYSTEM
Precautions in Operation ................................Page 43
Troubleshooting ...........................................Page 44
Carburetor Removal / Installation .....................Page 45
Air Cut-Off Valve ..........................................Page 45
Throttle Valve .............................................Page 46
Float Chamber ............................................Page 47
Adjustment of Idle Speed ...............................Page 48
Fuel Tank ...................................................Page 49
Fuel Valve Operation .....................................Page 49
Precautions in Operation:
WARNING
Gasoline has a low ignition point and explosive materials, so always work in a well-ventilated place and strictly
prohibit flame when working with gasoline.
CAUTION
• Do not bend throttle cable. Damaged throttle cable will make MTV unstable.
• When disassembling fuel system parts, pay attention to O-ring position, replace with new one as needed.
• There is a drain screw in the float chamber for draining residual gasoline.
• Do not disassemble air cut valve arbitrarily.
Item BSR33
Carburetor Diameter 33mm
I.D. number 33_77
Fuel level 31.5±0.5mm
Main injector # 122.5
Idle injector # 35
Idle speed 1500 ± 100rpm
Throttle handle clearance 1-3 mm
Pilot screw 2-1/2 turns
Tool (Special service tools):
• Vacuum/air pressure pump
• Fuel level gauge
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