Polaris 550 INDY 144 Owner's Manual page 37

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.
Always perform shock spring preload adjustments with the weight of the
vehicle removed from the shock and with the shock at full extension.
To change shock spring preload, grasp the
spring retainer and rotate it.
Initial IFS Preload Setting
(from body end to spring)
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.
4.375" (11.1 cm)
THE PERFECT FIT
Measure
Low
Preload
High
Preload
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