Cummins/Onan — Starter Disassembly
Repair & overhaul · Electric starter
From a Cummins/Onan service manual covering: P216, P218, P220, P248. Check it applies to your exact model before use.
Applies to: Cummins/Onan P216, Cummins/Onan P218, Cummins/Onan P220, Cummins/Onan P248
Before you start
- Accidental starting of the engine can result in severe personal injury or death. Disconnect the negative battery cable and spark plug wires while servicing the engine, controls, or associated equipment.
Procedure
- Remove the 'M' terminal nut and wire lead from the starter motor.
- Remove the two solenoid mounting screws, then remove the solenoid.
- Scribe a mark across the frame and rear bracket to aid in assembly; remove the two through bolts.
- Remove the rear bracket and frame assembly.
- Carefully remove the armature and lever from the front bracket; note direction of lever and retainer.
- Remove the two brush mounting screws, then remove the rear bracket.
- Remove the brush holder assembly from the frame by pulling the brushes out.
- Push the stopper toward the pinion and remove the snap ring.
- Remove the stopper and overrunning clutch from the armature shaft.
- Inspect the starter for damaged or worn parts; repair or replace all damaged or worn parts as needed.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan P216 →, Cummins/Onan P218 →, Cummins/Onan P220 →, Cummins/Onan P248 →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.