Perio
d
ic maintenance an
d
a
d
justment
6-16
6
4. Tighten the locknut and then slide
the rubber cover to its original po-
sition.
EAU21403
Valve clearance
The valves are an important engine
component, and since valve clearance
changes with use, they must be
checked and adjusted at the intervals
specified in the periodic maintenance
chart. Unadjusted valves can result in
improper air-fuel mixture, engine
noise, and eventually engine damage.
To prevent this from occurring, have
your Yamaha dealer check and adjust
the valve clearance at regular intervals.
TIP
This service must be performed when
the engine is cold.
1. Adjusting nut
2. Locknut
ZAUM1596
1
2
(a)
(b)
UB5GE1E0.book Page 16 Monday, August 26, 2019 3:02 PM