If you want to make a permanent repair, go to a marine dealer that sells Johnson/Evinrude motors and purchase a flywheel magnet adhesive kit. This is a much better adhesive than JB Weld because outboard motors generally run much faster than the average mower engine and they run for a longer period, so they developed a very strong adhesive to hold the magnets in place (because out on the water, you can't walk home).Trust me, I'm71 years old and have been a marine mechanic for many years. JB Weld is good, but the OMC product is much better, due to liability......