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9-80 Installing Skid Frame 1. Place a piece of cardboard on the floor to protect against scratching and tip the snowmobile onto 2. Pull the track away from the tunnel and spread open; then place the skid frame into the track. 3. Position the front of the skid frame into the tunnel and align the front arm with the appropriate 739-204A NOTE: To aid in centering the front arm with the hole in the tunnel, position the skid frame and 4. Elevate the rear of the skid frame and the track into position in the tunnel. 5. Align the offset pivot idler arm assembly with the appropriate hole in the tunnel. Secure the offset NOTE: Do not install the short legs of the rear springs onto the adjusting cams at this time. 6. At this time, tighten all four skid frame mounting cap screws to 3.2 kg-m (23 ft-lb). 7. Using the Rear Suspension Spring Tool (p/n 0144- 311), install the short legs of the rear springs onto 8. Tighten the two track tension adjusting bolt evenly until track deflection is within specifications; then 9. Check track tension deflection and alignment; adjust if necessary (see Track Tension and Track Track Tension CHECKING DEFLECTION 1. Tip the snowmobile on its side. 2. Hook a spring scale around a track clip at mid- span; then pull the track down with the scale to 9 729-429A NOTE: If the track is new, it will stretch slightly and take a “set” within the first 300 to 500 miles of ADJUSTING DEFLECTION 1. Place the snowmobile up on a shielded safety stand. Check to make sure the track is 2-3 in. off ! CAUTION When installing the skid frame, make sure the ! WARNING Deactivate all switches. Rear Suspension Style Setup Tension After Break-In Tension FasTrack w/Torque Sensing Link (121 in. Track) 32-38 mm 1 1/4-1 1/2 in.) 38-44 mm (1 1/2-1 3/4 in.) FasTrack w/Torque Sensing Link (136 in., 144 in., 151 in., 159 in., 162 in. 38-44 mm (1 1/2-1 3/4 in.) 50.8-57.2 mm (2-2 1/4 in.) |