Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hello Ken. Thank you for choosing Just Answer. I will be happy to assist you. It is very likely that either an idler pulley, or one of his spindle assemblies has a worn bearing, that is seizing after it heats up. Also, he should double check, to make sure his belt was not rubbing against a belt guard.
You and I can continue from here.