My craftman with Kohler backfires, I have put both new coils, and new carb, new plugs all new fuel hoses, new battery, new flywheel key.. the magnets was off the flywheel, glued them back on. It will start but it backfires bad, I need help!!!!
If you glue the magnets back in you must be absolutely positive that they are in the exact same place. Just a little off or if it is raised up a little, they could be the cause of your problem. Another cause may be improper valve clearance.
