MACHINE TUNING 4-5
THROTTLE STOP SCREW
The throttle stop screw determines the full close position of the
throttle valve and should be adjusted in the following proce-
dures.
• Loosen the throttle stop screw lock-nut.
• Adjust the throttle stop screw as follows:
* Turn in (to raise the throttle valve).
* Turn out (to lower the throttle valve).
• With the throttle stop screw held immovable, tighten the
lock-nut to lock the screw.
1 Throttle stop screw
2 Lock-nut
NOTE:
Opening the throttle valve slightly by adjusting the throttle stop
screw may often improve hesitation problem due to lack of mix-
ture on returning the throttle.
If engine idling is desired, turn in the throttle stop screw to raise
the throttle valve in the above procedures.
Throttle valve opening position
Standard
After touching the throttle stop screw to the
throttle valve, turn in the stop screw 1/4 –
3/4 turn to raise the throttle valve.
CAUTION
Too high an engine idle may cause driveability failure
such as lack of engine braking and poor deceleration
during brake application.
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