Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! Kubota diesel engine? Your alternator is not charging the battery. You need to test battery voltage, before start, after engine is running at least 1/2 throttle, and again when blades are running. Voltage running has to stay above the standing battery voltage. I suspect you need alternator!
It think you need to looking at the charging system, and not the deck components. Bad connection or alternator/regulator problem!
ok, let me know.