Does not have an electric clutch has a manual engage system. Check the triangle plate the one that holds the two idlers and the engage rod goes to it from the engage lever. Make sure it turns freely.There is a grease fitting on it and if it not greased regularly it will freeze up and will not disengage like it should. It just slides up off the pivot post if not frozen up, then you will have to work it off the post clean up post and hole in triangle plate. Worse case scenario the pulleys wear over time and need to be replaced along with a new belt.