Periodic maintenance and adjustment
7-20
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EAU45323
Adjusting the engine idling
speed
The engine idling speed must be
checked and, if necessary, adjusted as
follows.
TIP
A digital tachometer is needed to make
this adjustment.
1. Position the digital tachometer at
the ignition coil, which is located in
the spark plug cap.
2. Check the engine idling speed
and, if necessary, adjust it to spec-
ification by turning the idle adjust-
ing screw. To increase the engine
idling speed, turn the screw in di-
rection (a). To decrease the en-
gine idling speed, turn the screw in
direction (b).
TIP
If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
EAU21386
Checking the throttle grip free
play
Measure the throttle grip free play as
shown.
Periodically check the throttle grip free
play and, if necessary, have a Yamaha
dealer adjust it.
1. Idle adjusting screw
Engine idling speed:
1450–1650 r/min
1
(b)
(a)
1. Throttle grip free play
Throttle grip free play:
3.0–5.0 mm (0.12–0.20 in)
1
2CF-9-17_E0.book 20 ページ 2019年5月30日 木曜日 午前10時36分