Yamaha TTR250V, Owner'S Manual

Page: 57 / 87

PERIODIC MAINTENANCE AND MINOR REPAIR
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4. If the drive chain slack is incorrect,
adjust it as follows.
EAU22910
To adjust the drive chain slack
1. Remove the cotter pin from the
axle nut, and then loosen the axle
nut.
2. To tighten the drive chain, turn the
adjusting plate on each side of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing plate on each side of the
swingarm in direction (b), and then
push the rear wheel forward.
NOTE:
Make sure that both adjusting plates
are in the same position for proper
wheel alignment.
CAUTION:
ECA10570
Improper drive chain slack will over-
load the engine as well as other vital
parts of the machine and can lead to
chain slippage or breakage. To pre-
vent this from occurring, keep the
drive chain slack within the speci-
fied limits.
3. Tighten the axle nut to the speci-
fied torque.
4. Insert a new cotter pin into the axle
nut, and then bend its ends as
shown.
NOTE:
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.
WARNING
EWA10700
Always use a new cotter pin for the
axle nut.
1. Drive chain slack
1
1. Cotter pin
2. Axle nut
3. Adjusting plate
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2
3
(b)
(a)
Tightening torque:
Axle nut:
105 Nm (10.5 m·kgf, 76 ft·lbf)
1. Cotter pin
1