5
. Fuel Injection System
5-9
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.
● Release the fuel pressure before removing the fuel pipe to prevent splashing the fuel.
Caution
● Do not bend or twist throttle cable. Damaged cable will make unstable drive ability.
● When disassembling the fuel system parts, pay attention to O-ring position, replace with new
one as re-assembly.
Fuel pressure release procedure:
Disconnect the fuel pump relay, switch on and press the start switch for a few seconds to crank
the engine.
Specification
Item
Idle speed 1800±100 rpm
Throttle grip free play 2~6 mm
Fuel pressure 2.5 bar
Torque value
Engine temperature sensor：0.74~0.88 kgf-m
O2 sensor：3.6~4.6 kgf-m
Special tools
Injection system diagnostic tool
Fuel pressure gauge SYM-HT07010
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