Section 5.2
Defective Magnetic Switch

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 (1); see Figure "Basic Cranking Circuit" .
   

   Figure 1. Basic Cranking Circuit

   1. If the engine cranked with the jumper cable in place, the magnetic switch must be replaced; go to step 3 .
   2. If the engine did not crank with the jumper cable in place, check the starter; refer to "5.3 Defective Starter" .
3. Replace the magnetic switch. Refer to OEM guidelines.
4. Verify magnetic switch replacement; refer to "5.2.1 Test Engine with New Magnetic Switch" .

Section 5.2.1
Test Engine with New Magnetic Switch

Refer to "5.2 Defective Magnetic Switch" for exhaust caution before proceeding. 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; refer to "5.3 Defective Starter"