Checking The Rear Brake Pads; Checking The Front Brake Hoses; Checking The Rear Brake Hose; Bleeding The Hydraulic Brake System (Abs) - Yamaha MTN850-A 2017 Service Manual

b
c
1
d
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
2. Adjust:
• Rear brake light switch
Refer to "ADJUSTING THE REAR BRAKE
LIGHT SWITCH" on page 3-29.
EAS30634

CHECKING THE REAR BRAKE PADS

The following procedure applies to all of the
brake pads.
1. Operate the brake.
2. Check:
• Rear brake pad
Wear indicator grooves "1" almost disap-
peared  Replace the brake pads as a set.
Refer to "REAR BRAKE" on page 4-37.
1 1
EAS30635

CHECKING THE FRONT BRAKE HOSES

The following procedure applies to all of the
brake hoses and brake hose holders.
1. Check:
• Brake hose
Cracks/damage/wear  Replace.
2. Check:
• Brake hose holder
Loose  Tighten the holder bolt.
3. Hold the vehicle upright and apply the brake
several times.
4. Check:
• Brake hose
Brake fluid leakage  Replace the damaged
hose.
Refer to "FRONT BRAKE" on page 4-25.
2
a
3-15
PERIODIC MAINTENANCE
EAS30636

CHECKING THE REAR BRAKE HOSE

1. Check:
• Brake hose
Cracks/damage/wear  Replace.
2. Check:
• Brake hose holder
Loose Connection  Tighten the holder bolt.
3. Hold the vehicle upright and apply the rear
brake several times.
4. Check:
• Brake hose
Brake fluid leakage  Replace the damaged
hose.
Refer to "REAR BRAKE" on page 4-37.
EAS30893
BLEEDING THE HYDRAULIC BRAKE
SYSTEM (ABS)
EWA14000
WARNING
Always bleed the brake system when the
brake related parts are removed.
ECA18050
NOTICE
• Bleed the brake system in the following or-
der.
• 1st step: Front brake calipers
• 2nd step: Rear brake caliper
EWA16530
WARNING
Bleed the ABS whenever:
• the system is disassembled.
• a brake hose is loosened, disconnected or
replaced.
• the brake fluid level is very low.
• brake operation is faulty.
TIP
• Be careful not to spill any brake fluid or allow
the brake master cylinder reservoir or brake
fluid reservoir to overflow.
• When bleeding the ABS, make sure that there
is always enough brake fluid before applying
the brake. Ignoring this precaution could allow
air to enter the ABS, considerably lengthening
the bleeding procedure.
• If bleeding is difficult, it may be necessary to let
the brake fluid settle for a few hours.
• Repeat the bleeding procedure when the tiny
bubbles in the hose have disappeared.
1. Bleed:
• ABS