Small Engine Troubleshooting Problems? Ask a Mechanic Now.
# 55 in the link above is the only belt keeper shown, Is it in pace and close enough to the belt that it has to be loosened to get belt on? Can you determine which pulley the belt comes of of first? The drive pulley on the engine has it's own keeper also. I assume it is there? Once a belt comes off, it can be damaged, is the belt straight and not out of shape? Once belt gets out of shape, it will never stay on!