Polaris RANGER XP 1000 2021 Owner's Manual page 142

MAINTENANCE
CAM ADJUSTMENT
Trail Boss and NorthStar Trail Boss models are equipped with Nivomat shocks,
which cannot be manually adjusted. Nivomat shocks automatically adjust
Adjust the front and rear shock absorber springs by rotating the adjustment cam
either clockwise or counter-clockwise to increase or decrease spring tension.
Always heed the following rules if you make adjustments to this suspension.
• Always return the suspension to the lowest (softest) setting after the load is
removed from the vehicle. The increased suspension height will negatively
impact vehicle stability when operating without a load.
• Always apply the same adjustment setting to both rear wheels.
140
NOTICE
internal pressure during use