Sym Orbit 125 Service Manual page 45

4. FUEL SYSTEM
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
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.
Specification
Item
Venturi diameter
I.D. number
Level in float chamber
Main injector
Idle(pilot) injector
Idle speed
Throttle handle free play
Fuel quantity
adjustment screw
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
4-2
Specification
24 mm
063c
18.5±0.5 mm
# 110
# 35
1700±100 rpm
2~6 mm
1 3/4±3/4 turns
SYM