Page 128 of 382
CHASFRONT BRAKE
4-13
MASTER CYLINDER INSPECTION
1. Inspect:
•Master cylinder assembly
Wear/scratches ➔Replace the master
cylinder assembly.
•Master cylinder body
Cracks/damage ➔Replace the master
cylinder assembly.
•Fluid delivery passage
(master cylinder)
Obstruction ➔Clean with a jet of com-
pressed air.
2. Inspect:
•Master cylinder piston unit (1)
Scratches/wear/damage ➔Replace the
master cylinder assembly.
3. Inspect:
•Diaphragm
Wear/damage ➔Replace.
4. Inspect:
•Brake hose
Cracks/wear/damage ➔Replace.
MASTER CYLINDER ASSEMBLY
WARNING
•All internal brake components should be
cleaned and lubricated with new brake fluid
only before installation.
Recommended brake fluid: DOT 4
•In case of non correct operation of the
brake master cylinder, replace the master
cylinder assembly.
1. Install:
•Spring (1)
•Master cylinder (2)
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Page 129 of 382
FRONT BRAKE
4-14
CHAS
2. Install:
•Circlip (1)
•Master cylinder boot (2)
MASTER CYLINDER INSTALLATION
1. Install:
•Master cylinder (1)
•Master cylinder bracket (2)
Screw (master cylinder bracket): 9 Nm (0.9 mkg)
2. Install:
•Plain washer (1) (new)
•Brake hose (2)
•Union bolt (3)
Union bolt (brake hose): 20 Nm (2.0 mkg)
NOTE:
•When tightening the union bolt be sure to put
the brake hose in the correct position.
•Check that the brake hose has stayed in the
correct position. Adjust if necessary.
WARNING
•Check that the brake hose routing is as
described. Refer to “CABLE ROUTING”
section.
•Always use new plain washers.
3. Fill:
•Brake fluid reservoir
Recommended brake fluid: DOT 4
2
3
1
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Page 130 of 382
CHASFRONT BRAKE
4-15
Brake fluid may deteriorate painted surfaces
or plastic parts. Always clean up spilled fluid
immediately.
CAUTION:
WARNING
•Use only designated quality brake fluid.
Otherwise, the rubber seals may deterio-
rate, causing leakage and poor brake per-
formance.
•Refill with the same type of brake fluid:
mixing fluids may result in a harmful chem-
ical reaction and lead to poor perform-
ance.
•Be careful that water does not enter the
significantly lower the boiling point of the
fluid may result in vapor lock.
4. Air bleed:
•Brake system
Refer to “AIR BLEEDING (HYDRAULIC
BRAKE SYSTEM)” section in CHAPTER 3.
5. Inspect:
•Brake fluid level
Lower than “MIN” mark ➔Fill.
Refer to “BRAKE FLUID INSPECTION”
section in CHAPTER 3.
(a) Minimum level mark “MIN”
6. Install:
•Diaphragm (1)
•Master cylinder cap (2)
•Screw (3) (cap) Screw (master cylinder cap): 1.5 Nm (0.15 mkg)
a
23
1
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Page 133 of 382

FRONT BRAKE
4-18
CHAS
BRAKE CALIPER DISASSEMBLY
1. Remove:
•Brake caliper piston
•Dust seal (1)
•Piston seal (2)
Removal procedure:
•Blow compressed air into the hose joint open-
ing to force out the caliper piston from the
brake caliper body.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
•Remove the piston seal.
CALIPER INSPECTION
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
1. Inspect:
•Caliper piston (1)
Scratches/wear/rust ➔Replace caliper
assembly.
•Caliper cylinder (2)
Scratches/wear ➔Replace caliper assem-
bly.
•Caliper (3)
Cracks/damaged ➔Replace the brake
caliper assembly..
Recommended programme for the replace-
ment of brake system components:
Brake pads When necessary
Brake hoses Every four years
Replace every
24,000 km or 24
Brake fluid months and when-
ever the brake is
disassembled.
WARNING
All internal brake components should be
cleaned and lubricated with new brake fluid
only before installation. Do not use solvents to
prevent sealing elements from becoming mis-
shapen or swollen.
WARNING
•Never try to pry out the caliper piston.
•Cover the caliper piston with a rag. Be
careful not to get injured when the piston
is expelled from the master cylinder.
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Page 134 of 382
CHASFRONT BRAKE
4-19
•Fluid delivery passage (caliper)
Obstruction ➔Clean with compressed air.
CALIPER ASSEMBLY
WARNING
•All internal brake components should be
cleaned and lubricated with new brake fluid
only before installation.
•In case of non correct operation of the
brake caliper, replace the brake caliper
assembly. Recommended brake fluid:
DOT 4
2. Install:
•Brake caliper pistons (1)
CALIPER INSTALLATION
1. Install:
•Brake caliper (1)
•Caliper support bolts (2)
Bolt (caliper support): 25 Nm (2.5 mkg)
Union bolt: 20 Nm (2.0 mkg)
WARNING
In case of non correct operation of the brake
caliper, replace the brake caliper assembly.
1. Install:
•Piston seals (1)
•Dust seals (2)
•Brake hose (3)
•Plain washers (4) (new)
•Union bolt (5)
53
2
1
4
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FRONT BRAKE
4-20
CHAS
2. Fill:
•Brake fluid reservoir
3. Air bleed:
•Brake system
Refer to “AIR BLEEDING (HYDRAULIC
BRAKE SYSTEM)” section in CHAPTER 3. Recommended brake fluid:
DOT 4
Brake fluid may deteriorate painted surfaces
or plastic parts. Always clean up spilled fluid
immediately.
CAUTION:
WARNING
•Use only designated quality brake fluid.
Otherwise, the rubber seals may deterio-
rate, causing leakage and poor brake per-
formance.
•Refill with the same type of brake fluid:
mixing fluids may result in a harmful chem-
ical reaction and lead to poor perform-
ance.
•Be careful that water does not enter the
significantly lower the boiling point of the
fluid may result in vapor lock.
4. Inspect:
•Brake fluid level
Lower than “MIN” mark ➔Fill.
Refer to “BRAKE FLUID INSPECTION”
section in CHAPTER 3.
(a) Minimum level mark “MIN”
a
WARNING
Check that the brake hose routing is correct.
Refer to “CABLE ROUTING” section.
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Page 136 of 382
CHASREAR WHEEL AND BRAKE DISC
4-21
REAR WHEEL AND BRAKE DISC
Order Job name/Part name Q.ty Remarks Rear wheel and brake disc removal Remove the parts in order.
WARNING
Securely support the motorcycle so there
is no danger of it falling over.
1 Axle nut 1
2 Wheel axle 1
3 Drive chain -
4 Collar 2
5 Rear wheel assembly 1
6 Brake disc 1
Push the wheel forward and remove the
chain.
Refer to “REAR WHEEL INSTALLATION”
section.
Reverse the removal procedure for
installation.
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Page 138 of 382
CHASREAR WHEEL AND BRAKE DISC
4-23
REAR WHEEL DISASSEMBLY
1. Remove:
•Hub and driven sprocket
•Dampers
•Hub spacer
•Oil seal
•Hub bearing
•Wheel bearing
•Wheel spacer
•Wheel bearing
•Dust cover
•Oil seal
•Wheel bearing
•Wheel spacer
Removal procedure:
•Clean the outside of the hub.
•Remove the dust cover with a flat-headed screw
driver.
NOTE:
Place a rag on the outside to avoid damaging the
hub.
WARNING
Do not attempt to straighten a bent axle.
•Disassemble the bearing (1) with a normal
puller (2).
REAR WHEEL INSPECTION
1. Inspect:
•Rear wheel axle
(by rolling it on a flat surface)
Bends ➔Replace.
2. Inspect:
•Rear tire
Refer to “TIRE INSPECTION” in CHAP-
TER 3.
•Rear wheel
Refer to “WHEEL INSPECTION” in
CHAPTER 3.
3. Inspect:
•Spoke(s)
Bent/Damaged ➔Replace.
Loose spoke(s) ➔ Tighten.
Turn the wheel and hit the spokes gently
with a screwdriver.
NOTE:
A well tightened spoke makes a distinct, sharp
noise: a loose spoke makes a dull, muffled noise.
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