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9
TIP
If the specified idling speed cannot be obtained as
described above, have a Yamaha dealer make the
adjustment.
EBU24049
Adjusting the throttle lever free play
Periodically check the throttle lever free play and
adjust if necessary.
TIP
The engine idling speed must be checked and ad-
justed before adjusting the throttle lever free play.
1. Slide the rubber cover back.
2. Loosen the locknut.
3. To increase the throttle lever free play, turn
the throttle lever free play adjusting bolt in di-
rection (a). To decrease the throttle lever free
play, turn the adjusting bolt in direction (b).
4. Tighten the locknut.
5. Slide the rubber cover to its original position.
EBU24061
Valve clearance
The valve clearance changes with use, resulting in
improper air-fuel mixture and/or engine noise. To
prevent this from occurring, the valve clearance
must be adjusted by a Yamaha dealer at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
1. Rubber cover
2. Throttle lever free play adjusting bolt
3. Locknut
4. Throttle lever free play
Throttle lever free play:
2.0–4.0 mm (0.08–0.16 in)
3
2
4
(a)
(b)
1
UBCX60E0.book Page 29 Friday, April 19, 2019 9:09 AM