Periodic maintenance and adjustment
7-22
7
EAU22762
Drive chain slack
The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU91551
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
neutral position.
3. Find the center point of the chain
(position B) by measuring (approx.
32 mm (1.26 in)) forward from the
edge of the drive chain guard as
shown.
4. Push down on the center of the
drive chain and measure the dis-
tance A from the drive chain guard
to the middle of the chain link be-
ing pressed down at position B.
5. If distance A is incorrect, adjust it
as follows.
NOTICE:
Improper
drive chain slack will overload
the engine as well as other vital
parts of the motorcycle and can
lead to chain slippage or break-
age. If distance A is more than
46.0 mm (1.81 in), the chain can
damage the frame, swingarm,
and other parts. To prevent this
from occurring, keep the drive
chain slack within the specified
limits.
[ECA23070]
EAU74260
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack.
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
1. Edge of the drive chain guard
2. Position B
1. Drive chain guard
2. Distance A
2
1
2
1
Distance A:
36.0–41.0 mm (1.42–1.61 in)
