2003 Polaris Deep Snow Snowmobiles Service Manual, Page 253Get this manual
SUSPENSIONS Suspension Adjustment
The RMK suspensions has been designed and set up to deliver soft ride under average riding conditionsRider weight, riding styles, trail conditions, and vehicle speed each affect suspension actionThe suspension can be adjusted to suit rider preference and deliver excellent performance for given set of conditionsIt should be noted, however, that suspension adjustments involve compromise or trade offA machine set up to perform well in the moguls would not suit the preference of groomed trail riderAdjustable Features and Adjustment Options Rear torsion spring preload Optional coil springs for front track shock and spring preload washers or threaded collar Optional torsion springs Front limiter strap Optional coil springs for IFS shocks Adjustable Compression damping on Ryde FX or Indy Select rear track shock Adjustment Procedures It is good idea to break the suspension in for approximately 150 miles (240 km) and re-grease all suspension parts before fine tuning adjustments are madeAll settings will vary from rider to rider, depending on rider weight, vehicle speed, riding style, and trail conditionsWe recommend starting with factory settings and then customizing each adjustment individually to suit rider preferenceThe machine should be methodically tested under the same conditions after each adjustment (trail and snow conditions, vehicle speed,riding position, etc until satisfactory ride is achievedAdjustments should be made to one area at time, in order to properly evaluate the changeThe purpose of the front track shock coil spring is to control ride height and front IFS preloadIf you find that in order to obtain the desired ride effect the spring preload is over four additional washers (total of five), consider removing the existing spring and installing the next highest rate spring