4-35
FRONT BRAKE
EWA13090
• Use only the designated brake fluid. Other
brake fluids may cause the rubber seals to
deteriorate, causing leakage and poor
brake performance.
• Refill with the same type of brake fluid that
is already in the system. Mixing brake fluids
may result in a harmful chemical reaction,
leading to poor brake performance.
• When refilling, be careful that water does
not enter the brake fluid reservoir. Water
will significantly lower the boiling point of
the brake fluid and could cause vapor lock.
ECA13540
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean up
any spilt brake fluid immediately.
5. Bleed:
• Brake system
Refer to “BLEEDING THE HYDRAULIC
BRAKE SYSTEM (ABS)” on page 3-15.
6. Check:
• Brake fluid level
Below the minimum level mark → Add the
specified brake fluid to the proper level.
Refer to “CHECKING THE BRAKE FLUID
LEVEL” on page 3-13.
7. Check:
• Brake lever operation
Soft or spongy feeling → Bleed the brake sys-
tem.
Refer to “BLEEDING THE HYDRAULIC
BRAKE SYSTEM (ABS)” on page 3-15.
EAS30179
REMOVING THE FRONT BRAKE MASTER
CYLINDER
Before removing the front brake master cylinder,
drain the brake fluid from the entire brake sys-
tem.
1. Disconnect:
• Brake light switch connector (for MTN890)
(from the front brake light switch)
2. Remove:
• Brake hose union bolt
• Brake hose gasket
• Brake hose
To collect any remaining brake fluid, place a
container under the master cylinder and the end
of the brake hose.
EAS30725
CHECKING THE FRONT BRAKE MASTER
CYLINDER
1. Check:
• Brake master cylinder
Damage/scratches/wear → Replace.
• Brake fluid delivery passages
(brake master cylinder body)
Obstruction → Blow out with compressed air.
2. Check:
• Brake master cylinder kit
Damage/scratches/wear → Replace.
3. Check:
• Brake master cylinder reservoir
• Brake master cylinder reservoir diaphragm
holder
Cracks/damage → Replace.
• Brake master cylinder reservoir diaphragm
Damage/wear → Replace.
4. Check:
• Brake hose
Cracks/damage/wear → Replace.
EAS30181
ASSEMBLING THE FRONT BRAKE MASTER
CYLINDER
WARNING
EWA13520
• Before installation, all internal brake com-
ponents should be cleaned and lubricated
with clean or new brake fluid.
• Never use solvents on internal brake com-
ponents.
EAS30182
INSTALLING THE FRONT BRAKE MASTER
CYLINDER
1. Install:
• Front brake master cylinder
• Front brake master cylinder holder
Specified brake fluid
DOT 4
Front brake master cylinder hold-
er bolt
16 N·m (1.6 kgf·m, 12 lb·ft)
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