My polaris sportsman 500 will run fine from idle to about 10 mph but will not top out at all. The engine doesn't even Rev up, even with the thumb throttle pushed all the way in. It just stays right at that speed and rpm no matter what. Now sometimes I will pull a sharp turn and gun it, and it will go back to normal for a split second but then once it goes back to idle, it messes up again. Can anyone tell me what it might be? I know this is somewhat broad of details, so if anyone needs more info about it then I will tell you everything I can.

 

Welcome to the forums. Look at your other post in the Polaris section.

 

Welcome to the forums.