To determine if a defective magnetic switch is causing no start:
1. Start engine.
2. Clamp a heavy gage battery jumper cable between the two large studs of the magnetic switch;
Basic Cranking Circuit
1. If the engine cranked with the jumper cable in place, the magnetic switch must be replaced; refer to section .
2. If the engine did not crank with the jumper cable in place, check the starter.
Magnetic Switch Replacement
Perform the following steps for magnetic switch replacement:
1. Replace the magnetic switch. Refer to OEM guidelines.
2. Perform verification of magnetic switch replacement;
Test Engine with New Magnetic Switch
Perform the following steps to determine if the magnetic switch replacement resolved the no start condition:
Attempt to start and run the engine.
1. If the engine starts and runs, no further troubleshooting is required. Shut down the engine.
2. If the engine fails to start or run, check the starter;
