Yamaha TT250RA, Owner'S Manual

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PERIODIC MAINTENANCE AND ADJUSTMENT
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Changing the brake fluid
Have a Yamaha dealer change the
brake fluid at the intervals specified in
the TIP after the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the brake master cylin-
der and caliper as well as the brake
hose replaced at the intervals listed be-
low or whenever they are damaged or
leaking.
●
Oil seals: Replace every two
years.
●
Brake hose: Replace every four
years.
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Drive chain slack
The drive chain slack should be
checked before each ride and adjusted
if necessary.
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To check the drive chain slack
1. Place the motorcycle on the side-
stand.
TIP
When checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.
2. Shift the transmission into the neu-
tral 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.
4. If the drive chain slack is incorrect,
adjust it as follows.
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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
drive chain 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 forward.
NOTICE: Improper drive chain
slack will overload the engine
Drive chain slack:
35.0–50.0 mm (1.38–1.97 in)
1. Drive chain slack
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