Yamaha XV19SX(C), Service Manual

Page: 128 / 494

ENGINE
3-15
• 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.
CAUTION:
ECA13420
Clutch fluid may damage painted surfaces or
plastic parts. Therefore, always clean up any
spilt clutch fluid immediately.
NOTE:
In order to ensure a correct reading of the clutch
fluid level, make sure the top of the reservoir is
horizontal.
EAS20900
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.
NOTE:
• 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. Add the recommended clutch fluid to the
proper level.
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 without releas-
ing it.
g. Loosen the bleed screw. This will release the
tension 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.
k. Add the recommended clutch fluid to the
proper level.
Refer to “CHECKING THE CLUTCH FLUID
LEVEL” on page 3-14.
WARNING
EWA13010
After bleeding the hydraulic clutch system,
check the clutch operation.
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EAS20960
REPLACING THE AIR FILTER ELEMENT
1. Remove:
• Rider seat
Refer to “GENERAL CHASSIS” on page 4-1.
2. Remove:
• Fuel tank
Refer to “FUEL TANK” on page 6-1.
3. Remove:
• Air filter case cover “1”
T
R
.
.
Bleed screw (clutch release cylin-
der)
6 Nm (0.6 m·kg, 4.3 ft·lb)
2
1