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PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6
rection (a). To decrease the en-
gine idling speed, turn the screw in
direction (b).
N
O
TE:
If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
EAU21382
Checking the throttle cable
free play
The throttle cable free play should mea-
sure 4.0–6.0 mm (0.16–0.24 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
EAU21401
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 intervals specified in the periodic
maintenance and lubrication chart.
1. Throttle stop screw
Engine idling speed:
1600–1800 r/min
1
(a) (b)
1
1. Throttle cable free play
1
U5B610E0.book Page 14 Thursday, July 12, 2007 1:41 PM