2010 YAMAHA WR 125R wheel alignment

PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
9*Wheel bearingsCheck bearing for looseness or
damage.√√√√
10*SwingarmCheck operation and for exces-
sive play.√√√√
Lubricate with molybdenum disul-
fide grease.Every 24000 km (14000 mi)
11 Drive chainCheck chain slack, alignment and
condition.
Adjust and lubricate chain with a
special O-ring chain lubricant
thoroughly.Every 500 km (300 mi) and after washing the motorcycle or riding in the rain
12*Steering bearingsCheck bearing play and steering
for roughness.√√√√√
Lubricate with lithium-soap-based
grease.Every 24000 km (14000 mi)
13*Chassis fastenersMake sure that all nuts, bolts and
screws are properly tightened.√√√√√
14Brake lever pivot
shaftLubricate with silicone grease.√√√√√
15Brake pedal pivot
shaftLubricate with lithium-soap-based
grease.√√√√√
16Clutch lever pivot
shaftLubricate with lithium-soap-based
grease.√√√√√
17 SidestandCheck operation.
Lubricate with lithium-soap-based
grease.√√√√√
18*Sidestand switchCheck operation.√√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
U22BE1E0.book Page 4 Wednesday, September 16, 2009 1:46 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-22
6
EAU22760
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22773
To check the drive chain slack
1. Place the motorcycle on the side-
stand.TIPWhen checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.2. Shift the transmission into the neu-
tral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain slack
as shown.4. If the drive chain slack is incorrect,
adjust it as follows.
EAU22934
To adjust the drive chain slack
1. Loosen the axle nut, then loosen
the locknut at each end of the
swingarm.
2. To tighten the drive chain, turn the
drive chain slack adjusting nut at
each end of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting nut at each end
of the swingarm in direction (b),
and then push the rear wheel for-
ward. NOTICE: Improper drive
chain slack will overload the en-
gine as well as other vital partsof the motorcycle and can lead
to chain slippage or breakage.
To prevent this from occurring,
keep the drive chain slack with-
in the specified limits.
[ECA10571]
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both adjusting nuts are in the same po-
sition for proper wheel alignment.3. Tighten the locknuts, and then
tighten the axle nut to the specified
torques.
Drive chain slack:
40.0–50.0 mm (1.57–1.97 in)
1. Drive chain slack
1. Axle nut
2. Drive chain slack adjusting nut
3. Locknut
4. Alignment marks
U22BE1E0.book Page 22 Wednesday, September 16, 2009 1:46 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-35
6 3. Lift the rear wheel off the ground
according to the procedure on
page 6-32.
4. Remove the axle nut and the left
drive chain alignment plate.
5. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
TIP

If the drive chain is difficult to re-
move, remove the wheel axle first,
and then lift the wheel upward
enough to remove the drive chain
from the rear sprocket.


The drive chain does not need to
be disassembled in order to re-
move and install the rear wheel.
6. While supporting the brake caliper
and slightly lifting the wheel, pull
the wheel axle out together with
the right drive chain alignment
plate.
TIPA rubber mallet may be useful to tap the
wheel axle out.7. Remove the wheel. NOTICE: Do
not apply the brake after the
wheel has been removed to-
gether with the brake disc, oth-
erwise the brake pads will be
forced shut.
[ECA11071]
EAUM2652
To install the rear wheel
1. Install the drive chain onto the rear
sprocket.2. Install the wheel, the drive chain
alignment plates and the brake
caliper bracket by inserting the
wheel axle from the right-hand
side.
TIP

Install the drive chain alignment
plate with the “N” mark on the left
side, and be sure the mark is fac-
ing outward.


Make sure that the slot in the brake
caliper bracket is fit over the retain-
er on the swingarm.


Make sure that there is enough
space between the brake pads be-
fore installing the wheel.
1. Wheel axle
1. Retainer
2. Slot
U22BE1E0.book Page 35 Wednesday, September 16, 2009 1:46 PM