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8-16
1. Throttle stop screw
EBU00303
Valve clearance adjustment
The correct valve clearance changes with
use, resulting in improper fuel/air supply or
engine noise. To prevent this, the valve clear-
ance must be adjusted regularly. This adjust-
ment however, should be left to a professional
Yamaha service technician.
EBU00307
Throttle lever adjustment
N
O
TE:
Adjust the engine idling speed before adjust-
ing the throttle lever free play.
1. Loosen the locknut.
2. Turn the adjusting bolt until the throttle le-
ver free play is 3–5 mm (0.12–0.20 in).
3. Tighten the locknut.
1. Locknut 2. Adjusting bolt
a. Free play: 3–5 mm (0.12–0.20 in)
U4XE15.book Page 16 Monday, April 8, 2002 2:19 PM