Just purchased a used Kawasaki 360, 2003 model, and it moves forward when idling. Apparently the issue is with the cvt belt, but I don't know the cause or the fix. All help appreciated. Thanking you in advance.

 

Usually creeping is because the belt deflection (slack) is not great enough. There are specs for deflection.

When I installed a Carlisle belt and aftermarket primary clutch on my 400 prairie I had to add a shim to the secondary clutch because the belt was too tight.