2015 YAMAHA WR 250R brake

PERIODIC MAINTENANCE AND ADJUSTMENT
6-26
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56
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EAU22582
Checking the brake fluid levelBefore riding, check that the brake fluid
is above the minimum level mark.
Check the brake fluid level with the top
of the reservoir level. Replenish the
brake fluid if necessary.
Front brake Rear brake
WARNING
EWA15991
Improper maintenance can result in
loss of braking ability. Observe
these precautions:
Insufficient brake fluid may al-
low air to enter the brake sys-
tem, reducing braking
performance.

Clean the filler cap before re-
moving. Use only DOT 4 brake
fluid from a sealed container.

Use only the specified brake flu-
id; otherwise, the rubber sealsmay deteriorate, causing leak-
age.

Refill with the same type of
brake fluid. Adding a brake fluid
other than DOT 4 may result in a
harmful chemical reaction.

Be careful that water does not
enter the brake fluid reservoir
when refilling. Water will signifi-
cantly lower the boiling point of
the fluid and may result in vaporlock.
NOTICE
ECA17641
Brake fluid may damage painted sur-
faces or plastic parts. Always cleanup spilled fluid immediately.
As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake sys-
tem leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. If the brake
fluid level goes down suddenly, have a
Yamaha dealer check the cause before
further riding.
1. Minimum level mark1
1. Minimum level markSpecified brake fluid:
DOT 41
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-27
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567
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EAU22733
Changing the brake fluidHave a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the master cylinders and calipers as
well as the brake hoses replaced at the
intervals listed below or whenever they
are damaged or leaking.
Oil seals: Replace every two
years.

Brake hoses: Replace every four
years.
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU47223
To check the drive chain slack 1. Place the motorcycle on the sides- tand.TIPWhen checking and adjusting the drive
chain slack, there should be no weighton the motorcycle.
2. Shift the transmission into the neu- tral position.
3. Push on the drive chain at the cen- ter point between the chain ten-
sioner and the chain support
mounting bolt with a force of 50 N
(5.0 kgf, 11 lbf).
4. Measure drive chain slack be- tween the swingarm and the top of
the chain link closest to the swing-
arm as shown. 5. If the drive chain slack is incorrect,
adjust it as follows.
EAU34318
To adjust the drive 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 direc-
tion (a). To loosen the drive chain,
turn the adjusting bolt on each side
of the swingarm in direction (b),
and then push the rear wheel for-
Drive chain slack:8.0–13.0 mm (0.31–0.51 in)
1. Drive chain slack
2. Chain support mounting bolt
3. Chain tensioner
1
3
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-30
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EAU23144
Checking and lubricating the
brake and clutch leversThe operation of the brake and clutch
levers should be checked before each
ride, and the lever pivots should be lu-
bricated if necessary.
Brake lever Clutch lever
EAU23185
Checking and lubricating the
brake pedalThe operation of the brake pedal
should be checked before each ride,
and the pedal pivot should be lubricat-
ed if necessary.
Recommended lubricants:
Brake lever:Silicone grease
Clutch lever: Lithium-soap-based grease
Recommended lubricant: Lithium-soap-based grease
32D-9-ED.book 30 ページ ２０１４年７月１日　火曜日　午前１０時２分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
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567
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EAU23203
Checking and lubricating the
sidestandThe operation of the sidestand should
be checked before each ride, and the
sidestand pivot and metal-to-metal
contact surfaces should be lubricated if
necessary.
WARNING
EWA10732
If the sidestand does not move up
and down smoothly, have a Yamaha
dealer check or repair it. Otherwise,
the sidestand could contact the
ground and distract the operator, re-sulting in a possible loss of control.
EAUM1653
Lubricating the swingarm
pivotsThe swingarm pivots must be lubricat-
ed by a Yamaha dealer at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU23273
Checking the front forkThe condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation 1. Place the vehicle on a level sur- face and hold it in an upright posi-
tion. WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. While applying the front brake, push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
Recommended lubricant:Lithium-soap-based grease
Recommended lubricant:
Lithium-soap-based grease
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
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12 3. Unhook the headlight bulb holder,
and then remove the burnt-out
bulb.
4. Place a new headlight bulb into po- sition, and then secure it with the
bulb holder.
5. Install the bulb cover, and then connect the coupler.
6. Install the headlight cowling (to- gether with the headlight unit) by
placing it in the original position,
and then installing the bolts.
7. Have a Yamaha dealer adjust the headlight beam if necessary.
EAU45226
Replacing the auxiliary light
bulb If the auxiliary light bulb burns out, re-
place it as follows.1. Remove the headlight unit. (See page 6-35.)
2. Remove the auxiliary light bulb socket (together with the bulb) by
pulling it out.
3. Remove the burnt-out bulb by pull- ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the bulb) by pushing it in.
6. Install the headlight unit.
EAU24182
Tail/brake lightThis model is equipped with an
LED-type tail/brake light.
If the tail/brake light does not come on,
have a Yamaha dealer check it.
1. Headlight bulb holder
1
1. Auxiliary light bulb socket
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-39
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567
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EAU24361
Front wheel
EAU56321
To remove the front wheel
WARNING
EWA10822
To avoid injury, securely support the
vehicle so there is no danger of itfalling over. 1. Remove the rubber cap, and then loosen the front wheel axle pinch
bolts and the axle nut. 2. Lift the front wheel off the ground
according to the procedure in the
previous section “Supporting the
motorcycle”.
3. Remove the axle nut.
4. Pull the wheel axle out.
5. Remove the spacers and the wheel. NOTICE: Do not apply the
brake after the wheel and brake
disc have been removed, other-
wise the brake pads will be
forced shut.
[ECA11073]
To install the front wheel 1. Install the spacers into both sides of the wheel hub. NOTICE: When installing the spacers, be sure
to install them on the correct
side.
[ECA17701]
2. Lift the wheel up between the fork
legs.TIPMake sure that there is enough space
between the brake pads before install-
ing the brake caliper onto the brakedisc.
3. Insert the wheel axle from the right-hand side.
4. Install the axle nut.
5. Lower the front wheel so that it is
on the ground, and then put the
sidestand down.
6. Tighten the axle nut to the speci- fied torque.
7. Tighten the front wheel axle pinch bolts to the specified torque, and
then install the rubber cap.
1. Front wheel axle pinch bolt
2. Axle nut
3. Rubber cap
23
1
1. Front wheel axle pinch bolt
2. Wheel axle
1
2
Tightening torque: Axle nut:63 Nm (6.3 m·kgf, 46 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-40
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12 8. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU25081
Rear wheel
EAU56691
To remove the rear wheel
WARNING
EWA10822
To avoid injury, securely support the
vehicle so there is no danger of itfalling over.
1. Loosen the axle nut.
2. Lift the rear wheel off the ground according to the procedure on
page 6-38. 3. Remove the axle nut and washer.
4. Loosen the locknut on each side of
the swingarm.
5. Turn the drive chain slack adjust- ing bolts fully in direction (a).
6. Push the wheel forward, and then remove the drive chain from the
rear sprocket.
TIPThe drive chain does not need to be
disassembled in order to remove andinstall the rear wheel.
7. While supporting the brake caliper, pull the wheel axle out.
Tightening torque:Front wheel axle pinch bolt:23 Nm (2.3 m·kgf, 17 ft·lbf)
1. Axle nut
2. Washer1
2
1. Drive chain slack adjusting bolt
2. Locknut
3. Brake caliper
12
3
(a)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-41
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8. Remove the drive chain pullers,
spacers and the wheel. NOTICE:
Do not apply the brake after the
wheel and brake disc have been
removed, otherwise the brake
pads will be forced shut.
[ECA11073]
To install the rear wheel 1. Install the spacers into both sides of the wheel hub. NOTICE: When
installing the spacers, be sure
to install them on the correct
side.
[ECA17701]
2. Install the wheel, drive chain pull- ers and the brake caliper bracket
by inserting the wheel axle from
the left-hand side.
TIP
Make sure that the retainer on the
brake caliper bracket is inserted
into the slot in the swingarm.

Make sure that there is enough
space between the brake pads be-fore installing the wheel.
3. Install the drive chain onto the rear sprocket.
4. Install the washer and the axle nut.
5. Lower the rear wheel so that it is on the ground, and then put the
sidestand down.
6. Adjust the drive chain slack. (See page 6-27.) 7. Tighten the axle nut, and then the
locknuts to their specified torques.
1. Wheel axle
1
1. Brake caliper bracket
2. Retainer
3. Slot
1
2
3
Tightening torques:Axle nut:125 Nm (12.5 m·kgf, 90 ft·lbf)
Locknut: 16 Nm (1.6 m·kgf, 12 ft·lbf)
32D-9-ED.book 41 ページ ２０１４年７月１日　火曜日　午前１０時２分