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Why can't I get as much top speed with your belt?
 
Question
Why can't I get as much top speed with your belt?
Answer
Top speed is a function of belt fit, clutch tuning and operating conditions. Assuming that the snow conditions, altitude, engine tune-up, etc., have not resulted in the reduced performance, the first thing to check is belt fit. A belt with a slightly different fit in the pulleys can cause a situation where the belt does not ride properly in the driveR and driveN pulleys. Most clutches have axial adjustments on the pulleys to optimize the belt fit. In some cases, top speed is limited by an overly aggressive cam on the torque sensitive driveN pulley. Tuning the clutch to the belt will usually resolve this problem.

You can check how the belt rides in the pulleys rather simply. To obtain top speed, the belt must ride out fully in the driveR pulley and be pulled all the way into the driveN pulley. The belt ride can be checked by marking the pulleys with a felt tipped pen (obviously with the engine shut off) and then run the sled on level ground in packed snow. The marks should show that the belt is reaching the proper location in the two pulleys. If not, the above adjustments should be considered.

 
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