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Runs good for 15-20 minutes then go to slow down and stalls out. Won’t start unless I hold the throttle starts back up rides good. It has a new belt which sticks. Only happens when slowing down and off the gas. Any suggestions
 

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Try adjusting the secondary to make sure your belt deflection is set correctly. It could be the belt can't disengage and the drive train is stopping the engine. When you start the sled, does it try to creep forward?

You may want to pull and clean the primary and secondary and check for any broken/worn parts, as well.
 

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Discussion Starter · #3 ·
Try adjusting the secondary to make sure your belt deflection is set correctly. It could be the belt can't disengage and the drive train is stopping the engine. When you start the sled, does it try to creep forward?

You may want to pull and clean the primary and secondary and check for any broken/worn parts, as well.
It does try to creep forward but not enough so it moves. If I lift the track up the track will spin
 

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Open up the secondary a bit and that will stop that. When you open it up, it allows the belt to ride down a bit in the secondary and takes the tension out of the belt in the primary. It may also help your other problem with the engine issue.
 

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Belt deflection is the measurement that Polaris uses to tell if the belt is adjusted properly. Put a straight edge on the belt across the pulleys. Push down on the belt and measure the distance from the belt to the straight edge. That's how much the belt deflects. The measurement should be about 1 1/4". If the deflection is correct and the sled still tries to move when idling, the belt may be too wide for the primary. Adjusting the primary is not an easy task. Are you using a Polaris belt or an after-market one? Make sure it's the proper belt for your sled. The Polaris website shows 3211080 as the proper belt number.
 
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