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The rear arm shock absorber setting or
springs influences the load carrying capa-
bility of the snowmobile and should be
adjusted for the weight and riding prefer-
ence of the operator.
! WARNING
Read and understand the following
information before handling shock
absorbers that contain highly pressur-
ized nitrogen gas.
• Do not tamper with tor attempt to
open the cylinder assemblies.
• Do not subject the shock absorb-
ers to an open flame or other high
heat source. This may cause the
unit to explode due to excessive
gas pressure.
• Do not deform or damage the cyl-
inders in any way. Cylinder dam-
age will result in poor damping
performance.
• Do not dispose of a damaged or
worn out shock absorber your-
self. Take the shock absorber to a
Yamaha dealer for any service.
Rebuildable Gas Shocks
Servicing rebuildable shock absorbers is
considered normal maintenance and is the
responsibility of the owner. Take the snow-
mobile to an authorized Yamaha Snowmo-
bile dealer for this service. This service is
at the discretion and expense of the snow-
mobile owner. If changes in shock valving
are desired, see an authorized Yamaha
Snowmobile dealer. This service is at the
discretion and expense of the snowmobile
owner.
Each shock absorber should be visibly
checked weekly for fluid leakage, cracks or
breaks in the body, or a bent shaft. If any one
of these conditions is detected, replacement
is necessary. Take the snowmobile to an
authorized Yamaha Snowmobile dealer for
this service. If not under warranty, this ser-
vice is at the discretion and expense of the
snowmobile owner.
FOX Shocks
If service work is needed on any FOX
shocks, the shock must be removed and
sent to FOX or any FOX distributor for
any service work. For FOX shock infor-
mation, log on to www.ridefox.com.
34
Each shock absorber should be visibly
checked weekly for fluid leakage, cracks
or breaks in the body, or a bent shaft. If any
one of these conditions is detected,
replacement is necessary. Take the snow-
mobile to an authorized Yamaha Snowmo-
bile dealer for this service. If not under
warranty, this service is at the discretion
and expense of the snowmobile owner.
Adjusting Front Ski Shock
Springs
The front ski shock springs are individually
adjustable for the terrain conditions and
driving style of the operator. The spring
adjuster nut has been set at the factory so the
correct amount of threads are exposed
between the adjuster nut and the threaded
shock body as an initial setting. Additional
ski pressure can be obtained by tightening
the spring tension; ski pressure can be
decreased by relaxing spring tension.
NOTE: Equal adjustments should
be maintained on both sides of the
snowmobile.
Front ski shock spring pre-load adjust-
ment is accomplished by loosening the
adjuster nut locking collar (B) from the
adjuster nut (A) and using the Spring
Adjuster Tool from the tool kit, rotating
the adjuster nut in whichever direction is
desired. Tighten the locking collar
against the adjuster nut.
To adjust the damping, use the adjust-
ment lever located above the EVOL
chamber on the shock. There are three
settings that may be chosen 1, 2, or 3.
0748-941
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