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SERIES 638 STARTER MOTOR OPERATING - ENGINE WILL NOT CRANK

To determine if an inoperative starter is causing the engine to crank slowly or not crank, perform the following steps: ‪

  1. Remove the starter. Refer to section .
  2. Visually check the flywheel for broken or missing teeth.
    1. If the flywheel has broken or missing teeth, replace the component (refer to section .) and proceed with step of inspection.
    2. If the flywheel has no broken or missing teeth, check for an inoperative starter motor or starter solenoid. Refer to section .
  3. Visually check the starter motor for broken or missing teeth.
    1. If the starter motor has broken or missing teeth, replace the component (refer to section .) and proceed with step of inspection.
    2. If the starter has no broken or missing teeth, check for an inoperative starter motor or starter solenoid. Refer to section .
  4. Visually check the starter motor for a broken starting motor spring.
    1. If the starter motor spring is broken, replace the starter. Refer to section .
    2. If the starter motor spring is not broken, check for an inoperative starter motor or starter solenoid. Refer to section .

Replacement of Faulty Starter

Replace the starter as follows: ‪

  1. Install a new starter motor. Refer to section .
  2. Verify replacement. Refer to section .

Replacement of Faulty Flywheel

Replace the flywheel as follows: ‪

  1. Remove the flywheel. Refer to section .
  2. Install a new flywheel. Refer to section .
  3. Verify replacement replacement. Refer to section .
Test of Engine with Replaced Components

Perform the following to determine if the replaced components resolved the fault: ‪

  1. Attempt to start and run the engine.
    1. If the engine failed to start and run, check for an inoperative starter motor or starter solenoid. Refer to section .
    2. If the engine started and ran, no further troubleshooting is required.