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Periodic maintenance and adjustment
4.
While holding the chain tension adjusting
bolt with a wrench, tighten the locknut to
the specified torque.
Tightening torque:
Locknut:
25 Nm (2.5 m·kgf, 18 ft·lbf)
5.
Install the right side cover and the shroud,
or close the shroud.
ESU13935
Brake and parking brake
EWS00440
WARNING
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.
ECS00060
NOTICE
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.
92
2.
Remove the shroud and the right side
cover [RS90P / RS90PLT / RST90PGT
(see page 62 for the procedures)], or
open the shroud [RST90 (see page 66 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.
1. Brake pad wear limit
Brake pad wear limit:
7.5 mm (0.30 in)
4.
Install the right side cover and the shroud,
or close the shroud.
Checking the parking brake pads
Check the parking brake pads for wear ac-
cording to the following procedure.
1.
Remove the shroud and the right side
cover [RS90P / RS90PLT / RST90PGT
(see page 62 for the procedures)], or
open the shroud [RST90 (see page 66 for
the procedures)].
2.
Check the parking brake pads for wear by
measuring the thickness of the pads. If
the parking brake pads reach the wear
limit, ask a Yamaha dealer to replace
them.
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