Front Suspension Adjustments; Shock Valving - Polaris 550 Indy Owner's Manual

Front Suspension Adjustments

IFS Shock Spring Preload
Increasing spring preload will increase ski-to-ground pressure.
Decreasing spring preload will decrease ski-to-ground pressure. When
adjusting, be sure the springs on both the left and right sides of the
machine are at the same adjustment.
To change shock spring preload, grasp the
spring retainer and rotate it.
Initial IFS Preload Setting
(from body end to spring)
FOX shocks
Ryde FX shocks
Increasing the spring preload too much may
adversely affect the handling of the
snowmobile and the performance of the
suspension. Never exceed one inch (2.54
cm) of preload beyond the factory settings.
NOTICE: When decreasing preload, make sure
at least two turns of preload are holding
the spring between the retainer on the
top of the shock and the threaded
spring preload adjuster nut on the
shock body. Failure to do so could
cause the retainer to fall off when the
suspension is fully extended.
TIP: Other spring options are available. Please
see your POLARIS dealer.

Shock Valving

Some shocks can be revalved if spring preload alone isn't sufficient and
further adjustment is desired to control suspension stiffness. Please see
your POLARIS dealer.
WARNING! Changing shock valving requires special tools and a sound
knowledge of mechanical theory, tool use, and shop procedures to perform the
work safely and correctly. Shocks contain high-pressure nitrogen gas. Use
extreme caution when handling high-pressure service equipment. We
recommend that this work be performed by a POLARIS dealer.
4.25" (10.8 cm)
5.25" (13.3 cm)
THE PERFECT FIT
Measure
Low
Preload
High
Preload
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