Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Do you have a voltmeter to check the battery voltage before and while engine is running? What does it drop to when you turn on the blades? The engine has a charging coil (alternator) which puts out around 28 volts AC, which is charged at the rectifier to DC volts, around 14 volts
#4 is the stator ans is under the flywheel, the rectifier is mounted on the outside of the engine sheet metal.