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FUEL
SYSTEM
AND
THROTTLE
BODY
FAST IDLE
The fast idle system is automatic type.
When the fast idle cam is turned by the secondary throttle valve
actuator, the cam pushes the lever on the throttle valve shaft
causing the throttle valve to open and raise the engine speed.
When the engine has warmed up, depending on the water tem-
perature, ambient temperature and lapsed time, the fast idle is
cancelled allowing the engine to resume idle speed.
INSPECTION AND ADJUSTMENT
• Fast idle adjustment must be performed while the engine is
cold.
• Lift and support the fuel tank with its prop stay.
• Start up the engine and check the fast idle speed.
• If the fast idle speed is out of specification, stop the engine
and wait until the engine is cool enough.
• After cooling down engine, turn in or out the fast idle adjusting
screw
CD.
• Start the engine and check the fast idle speed.
• Repeat the above procedure untill the fast idle speed comes
with in the specified rpm.
• Set the idle speed to 1 050 - 1 250 rpm by turning the throttle
stop screw
(2).
_ Fast idle rpm
Standard: 1 500 - 2 000 rpm/Cold engine
Idle rpm : 1 050 - 1 250 rpmlWarmed engine