6-13
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
5
6
7
8
9
EAU00637
Valve clearance adjustment
The correct valve clearance
changes with use, resulting in
improper fuel/air supply or engine
noise. To prevent this, the valve
clearance must be adjusted regu-
larly. This adjustment however,
should be left to a professional
Yamaha service technician.
1. Loosen the locknut.
2. Turn the adjusting nut in direc-
tion
a
to increase free play
and in direction
b
to decrease
free play.
3. Tighten the locknut.
EAU01645*
Tires
To ensure maximum performance,
long service, and safe operation,
note the following.
Tire air pressure
Always check and adjust the tire
pressure before operating the
motorcycle.
EW000091
w
Tire inflation pressure should be
checked and adjusted when the
temperature of the tire equals the
ambient air temperature.
Free play:
3 ~ 5 mm (0.12 ~ 0.20 in)
* Load is the total weight of cargo, rider and
accessories.
Cold tire pressure
Front
Rear
125 kPa
150 kPa
Off-road riding
(18 psi)
(22 psi)
(1.25 kg/cm
2
) (1.50 kg/cm
2
)
3GX-9-33 (E) 12/10/07 11:17 AM Page 47
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