Polaris 2010 FST IQ Touring - Manual (Page 59)

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THE PERFECT FIT
IQ Front Suspension Adjustments
Shock Valving
The shocks can be revalved if spring preload alone isn't sufficient and
further adjustment is desired to control suspension stiffness.
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.
Front Springs
The front spring rates can be adjusted by changing the nitrogen pressure.
The upper chamber adjusts the main spring rate. The lower chamber
adjusts preload. See your Polaris dealer for more information.