2003 Polaris Deep Snow Snowmobiles Service Manual, Page 254Get this manual
SUSPENSIONS Front Suspension Setup and Adjustments
Spring preload is one of the adjustment options which affects ridePreload is the amount of pressure at which the spring is heldThe longer the installed length of the spring, the less the amount of pre-load; the shorter the installed length of the spring, the more the amount of pre-loadAn increase in IFS shock spring pre-load will result in an increase in ski pressureTo adjust front spring preload on threaded adjust models, grasp the spring and turn in clockwise direction (as viewed from the bottom of the shock) to increase the preloadTurn in counterclockwise direction to decrease preloadTurning clockwise increases preload