5-12 FUEL SYSTEM AND THROTTLE BODY
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INSPECTION
• Check following items any damage or clogging.
* Throttle valve * O-ring
* Vacuum hose * Throttle body
* Cushion seal * Intake pipe
FUEL INJECTOR INSPECTION
• Check fuel injector filter for evidence of dirt and contamina-
tion. If present, clean and check for presence of dirt in the fuel
lines and fuel tank.
• The fuel injector can be checked without removing it from the
intake pipe. (#4-51)
ISC VALVE
ISC valve inspection (#4-53)
The ISC valve

A is available only as the throttle body
assembly.
Never remove the throttle valve

B.
Avoid removing the throttle stop screw

C.
The throttle stop screw

C is factory-adjusted at the
time of delivery and therefore avoid removing or turn-
ing it unless otherwise necessary.
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