Operational Precautions - Sym Mio 50 Service Manual

4. Fuel System

Operational Precautions

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.
Caution
Do not bend or twist throttle valve cable. Damaged cable will make unstable drive ability.
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 valves arbitrarily.
Specification
Item
Venturi diameter
I.D. number
Fuel level
Main injector
Idle injector
Idle speed
Throttle handle free play
Fuel quantity adjustment screw
Torque value
Fuel valve tightening nut: 1.5~2.0Kgf-m
Special service tools
Vacuum/air pressure pump
General service tools
Fuel level gauge
4-2
To this chapter contents
HU10U/W
20 mm
049B
16.0mm
# 95
# 38
1700±100 rpm
2~6 mm
2 5/8±3/4 turns
Specification
HU05U
16.6 mm
17.75mm
2000±100 rpm
2~6 mm
2±1/2 turns
001
# 88
# 35