EAU22760
Drive chain slack
The drive chain slack should be chec-
ked before each ride and adjusted if
necessary.
EAU22783
To check the drive chain slack
1. Drive chain slack
1. Place the motorcycle on the
sidestand.
TIP
When checking and adjusting the dri-
ve chain slack, there should be no
weight on the motorcycle.
2. Shift the transmission into the
neutral position.3. Move the rear wheel by pushing
the motorcycle to locate the tigh-
test portion of the drive chain,
and then measure the drive chain
slack as shown.
4. If the drive chain slack is inco-
rrect, adjust it as follows.
TIP
When checking the drive chain slack,
the chain tensioner should not be tou-
ching the drive chain.
EAU34316
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swin-
garm.
1. Wheel axle
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
2. To tighten the drive chain, turn
the drive chain slack adjusting
bolt on each side of the swin-
garm in direction (a). To loosen
the drive chain, turn the adjusting
bolt on each side of the swin-
garm in direction (b), and then
push the rear wheel forward.
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 breakage. To
prevent this from occurring,
keep the drive chain slack wit-
hin the specified limits.
[ECA10571]
Drive chain slack:
XT660Z 50.0-60.0 mm
(1.96-2.36 in)
XT660ZA 40.0-55.0 mm
(1.57-2.17 in)
PERIODIC MAINTENANCE AND ADJUSTMENT
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TIP
Using the alignment marks on each
side of the swingarm, make sure that
both drive chain pullers are in the
same position for proper wheel align-
ment.
3. Tighten the axle nut, then the
locknuts to their specified tor-
ques.
EAU23025
Cleaning and lubricating the
drive chain
The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly
wear out, especially when riding in
dusty or wet areas. Service the drive
chain as follows.
ECA10583
The drive chain must be lubricated
after washing the motorcycle,
riding in the rain or riding in wet
areas.
1. Clean the drive chain with kero-
sene and a small soft brush.
NOTICE: To prevent damaging
the O-rings, do not clean the
drive chain with steam clea-
ners, high-pressure washers or
inappropriate solvents.
[ECA11121]
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive
chain with a special O-ring chain
lubricant. NOTICE: Do not use
engine oil or any other lubri-cants for the drive chain, as
they may contain substances
that could damage the O-rings.
[ECA11111]
NOTICETightening torques:
Axle nut:
16 Nm (1.6 m·kgf, 11 ft·lbf)
Locknut:
105 Nm (10.5 m·kgf, 75 ft·lbf)
PERIODIC MAINTENANCE AND ADJUSTMENT
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