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INSP
ADJ
IDLE SPEED ADJUSTMENT
1.Place the machine on a level place.
2.Warm up engine for several minutes.
3.Adjust:
● Engine idle speed
**********************************
Adjustment steps:
●Turn the pilot screw 1 clockwise until it is
lightly seated.
●Loosen the pilot screw by turning it coun-
terclockwise for the specified number of
turns.
●Turn the throttle stop screw 2 until the
Idle speed is in the specified range. Use
the Inductive Tachometer to confirm the
engine speed.
●Turn the pilot screw 1 again clockwise or
counterclockwise in 1/8-turn increments
to achieve the highest speed with just the
pilot screw.
●Once again, turn the throttle stop screw 2
to attain the specified idle speed.
**********************************
Pilot screw:
2 counterclockwise turns
Clockwise
Idle speed becomes
higher.
Counterclock-
wise
Idle speed becomes
lower.
Inductive tachometer:
P/N. YU-08036-A, 90890-03113
Engine idle speed:
1,400 ~ 1,500 r/min
4.Check:
● Throttle cable free play
Refer to “THROTTLE CABLE FREE PLAY
ADJUSTMENT” section.
IDLE SPEED ADJUSTMENT
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