We had a mower donated for our baseball fields. The owner said it will not charge the battery. We also found that after charging the battery it will drain and not start the next day once we charged it. He claims he tore the engine apart and the engine is putting out voltage. We replaced the battery and the ignition switch this week on his advice. Any ideas on what part needs replaced? (Under the battery tray where the green wire connects to a mechanical assembly there is a yellow/white wire beside it not connected to anything.)
Here is the schematic. Thanks.