Yamaha FJR13AG, Service Manual

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PERIODIC MAINTENANCE
3-12
WARNING
EWA13370
• Use only the designated clutch fluid. Other
clutch fluids may cause the rubber seals to
deteriorate, causing leakage and poor
clutch performance.
• Refill with the same type of clutch fluid that
is already in the system. Mixing clutch flu-
ids may result in a harmful chemical reac-
tion, leading to poor clutch performance.
• When refilling, be careful that water does
not enter the clutch fluid reservoir. Water
will significantly lower the boiling point of
the clutch fluid and could cause vapor lock.
NOTICE
ECA13420
Clutch fluid may damage painted surfaces or
plastic parts. Therefore, always clean up any
spilt clutch fluid immediately.
TIP
In order to ensure a correct reading of the clutch
fluid level, make sure the top of the reservoir is
horizontal.
EAS30892
BLEEDING THE HYDRAULIC CLUTCH
SYSTEM
WARNING
EWA13000
Bleed the hydraulic clutch system whenever:
• the system was disassembled,
• a clutch hose was loosened or removed,
• the clutch fluid level is very low,
• clutch operation is faulty.
TIP
• Be careful not to spill any clutch fluid or allow
the clutch master cylinder reservoir to over-
flow.
• When bleeding the hydraulic clutch system,
make sure there is always enough clutch fluid
before applying the clutch lever. Ignoring this
precaution could allow air to enter the hydraulic
clutch system, considerably lengthening the
bleeding procedure.
• If bleeding is difficult, it may be necessary to let
the clutch fluid settle for a few hours. Repeat
the bleeding procedure when the tiny bubbles
in the hose have disappeared.
1. Bleed:
• Hydraulic clutch system
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
a. Fill the clutch master cylinder reservoir to the
proper level with the specified brake and
clutch fluid.
b. Install the clutch master cylinder reservoir di-
aphragm.
c. Connect a clear plastic hose “1” tightly to the
bleed screw “2”.
d. Place the other end of the hose into a con-
tainer.
e. Slowly squeeze the clutch lever several
times.
f. Fully squeeze the clutch lever and hold it in
position.
g. Loosen the bleed screw.
TIP
Loosening the bleed screw will release the pres-
sure and cause the clutch lever to contact the
handlebar grip.
h. Tighten the bleed screw and then release the
clutch lever.
i. Repeat steps (e) to (h) until all of the air bub-
bles have disappeared from the clutch fluid in
the plastic hose.
j. Tighten the bleed screw to specification.
T
R
.
.
Clutch release cylinder bleed
screw
5 Nm (0.5 m·kgf, 3.6 ft·lbf)