I had to remove my clutch to change my starter on my 2005 sportsman...when the bolt to put the clutch went back in it must have crossed threaded and its tight as hell. But not tight enough to keep the clutch tight on the shaft. Now when I try to remove the bolt the shaft is turning with it but the clutch is slipping.

HOW CAN I KEEP THE SHAFT FROM SPINNING SO I CAN REMOVE THE BOLT?

 

If you're doing it with a socket and wrench an electric or air impact and 5/8" socket should be able to remove the bolt depending on how bad you cross threaded it.