2002 Polaris Universal Snowmobile Owners Manual - Page 58

THE PERFECT FIT Rear Suspension Adjustments Optional Coil Springs Different rate coil springs are available for some shocks if a firmer ride is desired. Contact your dealer for more information. Position Sensitive Shock (PPS) There are no external adjustments on the position sensitive shock. There is a performance PPS kit available for increasing damping. If you desire to have the internal valving changed, consult your dealer, or refer to the suspension troubleshooting decal located under your hood or on the clutch guard. Suspension Coupling On all Polaris snowmobile rear suspensions, there are two torque arms that control the movement of the rail beam. Prior to the advent of suspension coupling, these torque arms could move independently of each other. Rear suspension coupling links the movement of the front and rear torque arms to each other. There are two types of rear suspension coupling. Front To Rear Coupling and the Front Rear Scissor Stop (FRSS) The front rear scissor stop (FRSS) couples the movement of the front torque arm with the rear torque arm and limits the amount of independence between the movement of the front torque arm and the rear torque arm. When hitting a bump, the front torque arm starts to compress. The FRSS links that movement to the rear torque arm, causing it to compress and raise the rear suspension up as one, allowing the suspension to hit the bump only once and eliminating kickback. Your FRSS is preset at the factory. Do not make any adjustments to the position of the FRSS or your ride will be compromised. 56