Hey, i have a 19 hp (601v) kawasaki motor on a 52"cut hustler. Just rebuilt the motor. Since rebuilding , the battery has not been charging.checked the stator and no power coming from it. Replaced it, and my battery is still not charging. Could it be the magnets on the flywheel or am i missing something. Can you replace just the magnets or do you have to replace the whole flywheel. Thanks for your help.