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CLEANING THE SPARK
ARRESTER (For USA)
• Be sure the exhaust pipe and si-
lencer are cool before cleaning
the spark arrester.
• Do not start the engine when
cleaning the exhaust system.
1. Remove:
• Screw (silencer cap) "1"
2. Remove:
• Bolt (spark arrester) "1"
3. Remove:
• Tail pipe "1"
• Gasket (tail pipe) "2"
• Spark arrester "3"
Pull the spark arrester out of the
silencer.
• Gasket (spark arrester) "4"
4. Clean:
• Spark arrester
Tap the spark arrester lightly,
then use a wire brush to remove
any carbon deposits.
5. Install:
• Gasket (spark arrester)
• Spark arrester
Insert the spark arrester into the
silencer and align the bolt holes.
• Gasket (tail pipe)
• Bolt (spark arrester)
Bolt (spark arrester):
7 Nm (0.7 m•kg, 5.1
ft•lb)
6. Install:
• Silencer cap
Silencer cap:
5 Nm (0.5 m•kg, 3.6
ft•lb)
First tighten the two screws "a" locat-
ed horizontally apart, and then tighten
the others.

CHASSIS

BLEEDING THE HYDRAULIC
BRAKE SYSTEM
Bleed the brake system if:
• The system has been disassem-
bled.
• A brake hose has been loosened
or removed.
• The brake fluid is very low.
• The brake operation is faulty.
A dangerous loss of braking per-
formance may occur if the brake
system is not properly bled.
1. Remove:
• Brake master cylinder cap
• Diaphragm
• Reservoir float (front brake)
• Protector (rear brake)
2. Bleed:
• Brake fluid
Air bleeding steps:
a. Add proper brake fluid to the res-
ervoir.
b. Install the diaphragm. Be careful
not to spill any fluid or allow the
reservoir to overflow.
c. Connect the clear plastic tube "2"
tightly to the caliper bleed screw
"1".
3-17
CHASSIS
A. Front
B. Rear
d. Place the other end of the tube
into a container.
e. Slowly apply the brake lever or
pedal several times.
f. Pull the lever in or push down on
the pedal. Hold the lever or pedal
in position.
g. Loosen the bleed screw and allow
the lever or pedal to travel to-
wards its limit.
h. Tighten the bleed screw when the
lever or pedal limit has been
reached; then release the lever or
pedal.
Bleed screw:
6 Nm (0.6 m•kg, 4.3
ft•lb)
i.
Repeat steps (e) to (h) until of the
air bubbles have been removed
from the system.
If bleeding is difficult, it may be nec-
essary to let the brake fluid system
stabilize for a few hours. Repeat the
bleeding procedure when the tiny
bubbles in the system have disap-
peared.
j.
Add brake fluid to the level line on
the reservoir.
Check the operation of the brake
after bleeding the brake system.
3. Install:
• Protector (rear brake)
• Reservoir float (front brake)
• Diaphragm
• Brake master cylinder cap
ADJUSTING THE FRONT BRAKE
1. Check:
• Brake lever position "a"
Brake lever position "a":
Standard posi-
Extent of ad-
tion
justment
76–97 mm
95 mm (3.74 in)
(2.99–3.82 in)

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This manual also for:

Wr250fx

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