Cleaning And Lubricating The Drive Chain - Yamaha WR250R Owner's Manual

Periodic maintenance and adjustment
ward. NOTICE: Improper drive
1
chain slack will overload the en-
gine as well as other vital parts
2
of the motorcycle and can lead
to chain slippage or breakage.
To prevent this from occurring,
3
keep the drive chain slack with-
in the specified limits.
4
TIP
Using the alignment marks on each
5
side of the swingarm, make sure that
both drive chain pullers are in the same
6
position for proper wheel alignment.
7
1
8
5
9
10
4
1. Axle nut
11
2. Locknut
3. Drive chain slack adjusting bolt
12
4. Alignment marks
5. Drive chain puller
3. Tighten the axle nut, then the lock-
nuts to their specified torques.
Tightening torques:
Axle nut:
Locknut:
[ECA10572]
4. Make sure that the drive chain pull-
ers are in the same position, the
drive chain slack is correct, and
the drive chain moves smoothly.
(a)
(b)
2
3
125 Nm (12.5 m·kgf, 90 ft·lbf)
16 Nm (1.6 m·kgf, 12 ft·lbf)
6-28
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.
NOTICE
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 cleaners,
high-pressure washers or inap-
propriate solvents.
[ECA11122]
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
EAU23026
ECA10584