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Periodic maintenance and adjustment
93
4. While holding the chain tension adjusting
bolt with a wrench, tighten the locknut to
the specified torque.
5. Install the right side cover and the shroud
(RS90P / RS90PLT / RST90PGT), or
close the shroud (RST90).
ESU13934
Brake and parking brake
WARNING
EWS00440
● A soft, spongy feeling in the brake lever
indicates a failure in the brake system.
● Do not operate the snowmobile if you
find any problems in the brake system.
You could lose braking ability, which
could lead to an accident. Ask a Yamaha
dealer to inspect and repair the brake
system.
NOTICE
ECS00060
Make sure that the brake lever end does
not project out over the handlebar end.
This will help prevent brake lever damage
when the snowmobile is placed on its side
for service.
Test the brake at a low speed when starting
out to make sure that it is working properly. If
the brake does not provide proper braking
performance, inspect the brake for wear or
brake fluid leakage. (See the following section
for more details.)
Checking the brake pads
Check the brake pads for wear according to
the following procedure.
1. Place the snowmobile on a level surface
and apply the parking brake.
2. Remove the shroud and the right side
cover (RS90P / RS90PLT / RST90PGT),
or open the shroud (RST90). [See page
63 (RS90P / RS90PLT / RST90PGT) or
page 67 (RST90) for the procedures.]
3. Check the brake pads for wear.
If the brake pads reach the wear limit, ask
a Yamaha dealer to replace them.
4. Install the right side cover and the shroud
(RS90P / RS90PLT / RST90PGT), or
close the shroud (RST90).
Checking the parking brake pads
Check the parking brake pads for wear ac-
cording to the following procedure.
1. Locknut
2. Chain tension adjusting bolt
Tightening torque:
Locknut:
25 Nm (2.5 m·kgf, 18 ft·lbf)
1
2
1. Brake pad wear limit
Brake pad wear limit:
7.5 mm (0.30 in)
U8HV10E0.book Page 93 Monday, May 16, 2011 1:15 PM