4. FUEL SYSTEM SYM
4-2
PRECAUTIONS IN OPERATION
General Information
Warning
Cautions
Specification
Item Specification
Main jet 110#
Slow jet 35#
Idle speed 1700±100 rpm
Fuel quantity
adjustment screw
2 1/8±3/4 turns
Level in float chamber 3.0±1 mm
Jet needle DB4E6 add 1 unit 0.5mm washer
Throttle handle free play 2~6 mm
Torque value
Fuel valve tightening nut: 1.5~2.0 Kgf-m
Tool
Special service tools
Vacuum/air pressure pump
General service tools
Fuel level gauge
Gasoline is a low ignition point and explosive materials, so always work in a well-ventilated
place and strictly prohibit flame when working with gasoline.
Do not bend or twist throttle valve cable. Damaged cable will make unstable
driveability.
When disassembling fuel system parts, pay attention to O-ring position, replace with
new one as re-assembly
There is a drain screw in the float chamber for draining residual gasoline.
Do not disassemble automatic by-starter and air cut-off valve arbitrarily.
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