4. FUEL SYSTEM
4-2
Precautions in Operation
General Information
Warning
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.
Cautions
y Do not bend off throttle cable. Damaged throttle cable will make unstable drive-ability.
y When disassembling fuel system parts, pay attention to O-ring position, replace with new one as
re-assembly
y There is a drain screw in the float chamber for draining residual gasoline.
y Do not disassemble air cut valve arbitrarily.
Specification
ITEM UA25A
Carburetor diameter Ø22mm
I.D. number PTG 050
Fuel level 14.8mm
Main injector # 110
Idle injector # 35
Idle speed 1700 ± 100rpm
Throttle handle clearance 1~3 mm
Pilot screw 2 turns
Tool
Special service tools
Vacuum/air pressure pump
Fuel level gauge
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