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Rear Suspension
The Sno Pro 600 is equipped with a compression adjust-
able remote reservoir shock in the rear suspension sys-
tem. This system utilizes front arm limiter straps.
The suspension should be adjusted for the operational
needs and riding preference of the operator.
The rear springs influence the load carrying capability
of the snowmobile and should be adjusted for the
weight and riding preference of the operator.
Rear Arm Shock Rebound
The rear arm shock can be adjusted for rebound quali-
ties. To adjust, use the following procedure.
1. Turn the adjuster clockwise until it stops (hard
position).
2. Turn the adjuster counterclockwise to the initial
setting (see appropriate Valve Stacks/Specifica-
tions page in this manual) or turn the adjuster
counterclockwise the desired number of “clicks.”
NOTE: On the rear arm shock, the rebound
adjuster has a total range of 18 “clicks” or 4 1/2 full
turns (4 “clicks”= 1 turn).
Front/Rear Arm Shock Compression
1. Turn the adjuster clockwise until it stops (hard
position).
2. Turn the adjuster counterclockwise to the initial setting
(see pages 12 in this manual) or turn the adjuster coun-
terclockwise the desired number of “clicks.”
NOTE: On the rear arm shock, the compression
adjuster has a total range of 18 “clicks” or 3 full
turns (6 “clicks” = 1 turn).
Front Arm Shock Spring
The skid frame front arm shock spring is adjustable.
However, Arctic Cat recommends that the shock
spring be adjusted to a maximum of 6.4 mm (1/4 in.)
up or down from the standard pre-load setting.
NOTE: The standard pre-load spring length (installed)
is 7.30 in.
When customizing the amount of ski pressure, be sure to
not over-adjust the front arm shock spring to adversely
affect steering and operator control of the snowmobile.
Some experimentation may be required until the proper
adjustment for the operator’s individual style is obtained.
NOTE: Each driver’s style is different and some
experimentation will be required to become famil-
iar with the above adjustment procedure.
Adjusting Rear Spring Tension
Rear spring tension adjustment is accomplished by rotat-
ing the adjusting cams. Position 3 provides the stiffest ride,
and position 1 provides the softest ride. Always rotate the
cam from the lighter position to the heavier position.
To rotate an adjusting cam, use a six-point box-end
wrench. Rotate the wrench until the cam is in the
desired position. To stiffen the ride, rotate the cam so
as to raise the spring end. Make the adjustment on the
other cam and be sure both cams are adjusted equally.
CAUTION
Do not exceed the maximum 6.4 mm (1/4 in.) up or
down from the standard pre-load setting.
! WARNING
Do not adjust the front arm shock to a point at which
steering and operator control of the snowmobile are
adversely affected.
! WARNING
DO NOT make adjustments while operating the snow-
mobile. Keep both hands on the handlebar while the
snowmobile is moving.
CAUTION
Never force the adjustment cams from the low posi-
tion to the high position. Cam damage may occur.
