Yamaha 2011 Star XV250A Owner's Manual page 60

PERIODIC MAINTENANCE AND ADJUSTMENT
2. Remove the cotter pin from the
axle nut, and then loosen the axle
nut.
3. Loosen the drive chain puller lock-
nut at each end of the swingarm.
4. To tighten the drive chain, turn the
drive chain slack adjusting nut at
each end of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting nut at each end
of the swingarm in direction (b),
and then push the rear wheel for-
ward. NOTICE: Improper drive
chain slack will overload the en-
gine as well as other vital parts
of the motorcycle and can lead
to chain slippage or breakage.
To prevent this from occurring,
7
keep the drive chain slack with-
in the specified limits.
TIP
Using the alignment marks on each
side of the swingarm, make sure that
both drive chain pullers are in the same
position for proper wheel alignment.
1. Axle nut
2. Axle nut cotter pin
3. Drive chain puller locknut
4. Drive chain slack adjusting nut
5. Alignment marks
6. Drive chain puller
5. Tighten the locknuts, and then
tighten the axle nut to the specified
torques.
[ECA10571] Tightening torques:
Drive chain puller locknut:
16 Nm (1.6 m·kgf, 12 ft·lbf)
Axle nut:
105 Nm (10.5 m·kgf, 76 ft·lbf)
6. Insert a new cotter pin into the axle
6
1. Cotter pin
TIP
Make sure that two notches in the axle
nut are aligned with the hole through
the wheel axle, otherwise further tight-
en the axle nut until they are.
7. Adjust the brake pedal free play.
7-24
nut, and then bend its ends as
shown. WARNING! Always use a
new cotter pin for the axle nut.
[EWA10701]
(See page 7-20.)