Drive Chain Slack - Yamaha XT660R Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
G
Be careful that water does not en-
ter the brake fluid reservoir when
refilling. Water will significantly
lower the boiling point of the fluid
and may result in vapor lock.
G
Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up
immediately.
G As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
6

Drive chain slack

The drive chain slack should be
checked before each ride and adjusted
if necessary.
To check the drive chain slack
spilled fluid
1. Drive chain slack
1. Place the motorcycle on the side-
stand.
NOTE:
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.
EAU22760 3. Move the rear wheel by pushing
EAU22782
4. If the drive chain slack is incorrect,
NOTE:
When checking the drive chain slack,
the chain tensioner should not be
touching the drive chain.
To adjust the drive chain slack
(XT660R)
1. Loosen the axle nut, then loosen
2. To tighten the drive chain, turn the
6-24
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain slack
as shown.
Drive chain slack:
40.0–55.0 mm (1.57–2.17 in)
adjust it as follows.
the locknut at each end of the
swingarm.
adjusting nut at each end of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing nut at each end of the
swingarm in direction (b), and then
push the rear wheel forward.
EAU22932