Perio
d
ic maintenance an
d
a
d
justment
7-21
7
EAU22762
Drive chain slack
The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU84400
To check the
d
rive chain slack
1. Place the motorcycle on a suitable
stand. (See page 7-27.)
2. Confirm the rear wheel is off the
ground and the rear shock ab-
sorber is fully extended.
3. Shift the transmission into neutral.
4. Pull up the drive chain until the
chain is taut, and then measure
distance A between the top of the
swingarm and the bottom of the
chain as shown.
5. If the drive chain slack is incorrect,
adjust it as follows.
NOTICE:
Im-
proper
d
rive chain slack will
overloa
d
the en
g
ine as well as
other vital parts of the motorcy-
cle an
d
can lea
d
to chain slip-
pa
g
e or
b
reaka
g
e. To prevent
this from occurrin
g
, keep the
d
rive chain slack within the
specifie
d
limits.
[ECA10572]
EAU84060
To a
d
just the
d
rive 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.
2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in di-
rection (a). To loosen the drive
chain, turn the adjusting bolt on
each side of the swingarm in di-
rection (b), and then push the rear
wheel forward.
1. Distance A
Distance A:
43.0–53.0 mm (1.69–2.09 in)
1
1. Axle nut
2. Locknut
1. Drive chain slack adjusting bolt
1
2
(b)
(a)
1
UBR814E0.book Page 21 Monday, March 7, 2022 11:16 AM
