I recently had the starter bracket welded back on the powerhead. I removed the flywheel, unpluged all the wired from powerpack etc and un hooked the negitive battery cable before it was welded. The guy who welded it said he could smell something burning.The ground wire that runs from the solenoid through the plug all the way to the switch was completly melted. I replaced the whole wire and now the motor has no spark. Does anyone have any suggestions what could have happened. thanks alot