Bleeding The Hydraulic Clutch System - Yamaha YZF-R7 Owner's Service Manual

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BLEEDING THE HYDRAULIC CLUTCH SYSTEM

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BLEEDING THE HYDRAULIC CLUTCH
SYSTEM
WARNING
WARNING
Bleed the hydraulic clutch system
whenever:
• the clutch system was disassembled,
• a clutch hose was loosened, discon-
nected or replaced,
• the clutch fluid level is very low,
• clutch operation is faulty.
NOTE:
• Be careful not to spill any clutch fluid
or allow the clutch fluid reservoir to
overflow.
• When bleeding the hydraulic clutch
system, make sure that there is always
enough clutch fluid before applying
the clutch. Ignoring this precaution
could allow air to enter the hydraulic
clutch system, considerably lengthen-
ing the bleeding procedure.
• If bleeding is difficult, it may be neces-
sary to let the clutch fluid settle for a
few hours. Repeat the bleeding proce-
dure when the tiny bubbles in the hose
have disappeared.
1. Bleed:
• hydraulic clutch system
a. Fill the clutch fluid reservoir to the
proper level with the recommended
clutch fluid.
b. Install the clutch fluid reservoir dia-
phragm.
c. Connect a clear plastic hose 1 tightly
to the bleed screw 2.
d. Place the other end of the hose into a
container.
e. Slowly apply the clutch several times.
f. Fully squeeze the clutch lever and
hold it in position.
g. Loosen the bleed screw.
NOTE:
Loosening the bleed screw will release
the pressure and cause the clutch lever
to contact the grip.
h. Tighten the bleed screw and then
release the clutch lever.
i. Repeat steps (e) to (h) until all of the
air bubbles have disappeared from
the clutch fluid in the plastic hose.
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ADJ