Drive Chain Slack - Yamaha DT125R Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR

Drive chain slack

The drive chain slack should be
checked before each ride and adjust-
ed if necessary.
To check the drive chain slack
1. Place the motorcycle on a level
surface and hold it in an upright
position.
NOTE:
When checking and adjusting the
drive chain slack, the motorcycle
should be positioned straight up and
6
there should be no weight on it.
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a. Drive chain slack
2. Shift the transmission into the
neutral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain,
and then measure the drive
chain slack as shown.
Drive chain slack:
25–40 mm
4. If the drive chain slack is incor-
rect, adjust it as follows.
a
1. Axle nut
2. Adjusting plate
To adjust the drive chain slack
6-27
2
b
a
1
1. Loosen the axle nut.
2. To tighten the drive chain, turn
the adjusting plate on each side
of the swingarm in direction a.
To loosen the drive chain, turn
the adjusting plate on each side
of the swingarm in direction b,
and then push the rear wheel for-
ward.
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