I have a Griz. 600 that will not trow a charge to the battery. After charging the batt. it will start one time and when it shuts off, no more start. The battery is almost new so thats not the problem. I think I need a magneto but not really sure. Also my pull start cable is broke because it takes superman to pull it. What can I do to make that a little easier to pull. Thanks to all..