2002 Polaris Universal Snowmobile Owners Manual - Page 54

THE PERFECT FIT Rear Suspension Adjustments Rear Suspension Initial Spring Preload Setting Xtra-10, EDGE and Xtra Lite (Sag Method) To set up the EDGE rear suspension torsion spring preload, measure the distance between the ground and rear bumper. This is measurement X. Take the first measurement with no rider and with the rear suspension at X full extension. NOTE: The rear bumper may need to be lifted upward slightly to fully extend the rear suspension. Next, have the rider drop down hard on the seat and bounce up and down several times, collapsing the rear suspension. With the rider seated, measure the distance between the ground and the rear bumper at the exact location used for measurement Y X. This is measurement Y. To determine sag, commonly referred to as ride-in, subtract measurement Y from X (Sag=X-Y). Adjust sag by rotating the torsion spring preload cams located on the rear torque arm. Use the illustration or the decal found under the hood for reference. The ideal amount of Sag for the EDGE rear suspension is four inches (X-Y=4). If the rear suspension rides in less than three inches or more than five inches with the torsion spring preload cams at their maximum range of adjustment, optional torsion springs (softer or stiffer, respectively) may be required. This is only an initial set-up, and final spring preload may vary based on rider preference and riding conditions. 52