PERIODIC MAINTENANCE 2-14
IDLE SPEED
Inspect initially after 20 hours (1 month) and every 200
hours (12 months) thereafter.
NOTE:
•
Before checking idle speed, the engine should be allowed to
warm up.
•
Check and / or adjust idle speed after engine speed has sta-
bilized.
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(3) Start engine.
(4) Attach engine tachometer to the special tool.
09900-26006 : Engine tachometer
(5) Check engine speed.
Idle speed (no load) : 800 – 900 r / min
ADJUSTMENT :
If the idle speed is out of specification, adjust it as follows :
(6) Remove IAC hose from silencer case.
(7) To stop the airflow from the IAC passage, pinch the IAC
valve hose closed.
(8) Adjust the engine speed to approx. 800 r / min. by turning
the by-pass airscrew.
Turning airscrew clockwise : Engine speed will
decrease.
Turning airscrew counterclockwise
: Engine speed will increase.
(1) Remove bolt and No.1 ignition coil.
(2) Connect special tool (H
.
T cord with plug cap adapter) be-
tween No.1 ignition coil and spark plug.
09930-88720 : H
.
T cord with plug cap adapter
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