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Home›Repair guides›Cummins/Onan›Out-of-Service Protection

Cummins/Onan 627.20199 — Out-of-Service Protection

Maintenance · unit

For the Cummins/Onan 627.20199, from the Cummins/Onan owner's manual.

Applies to: Craftsman 627.20199

Before you start

  • Do not smoke while servicing batteries.

Procedure

  1. Run engine until thoroughly warm.
  2. Turn off fuel supply and run engine until it stops.
  3. Drain oil from oil base while warm; refill with new oil and attach warning tag.
  4. Remove each spark plug, pour one ounce rust inhibitor or SAE #30 oil into each cylinder, crank slowly, install plugs.
  5. Service air cleaner.
  6. Clean governor linkage and wrap with clean cloth.
  7. Plug exhaust outlet and wipe entire unit.
  8. Disconnect battery on electric start models and follow storage procedure.

Full service-parts list: Craftsman 627.20199 →

Source: Cummins/Onan owner's 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.

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