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Generac NP-50G — Change Engine Oil

Maintenance · engine crankcase

For the Generac NP-50G, from the Generac owner's manual.

Applies to: Generac NP-50G, Generac GN-410 engine

Before you start

  • Do not fill above the FULL mark

Parts for this job

Part numbers from the service-parts list for Generac NP-50G. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Run engine for at least 5 minutes, then shut down.
  2. With engine still warm, remove oil drain cap from oil drain hose.
  3. Drain oil completely into a suitable container.
  4. Install and tighten oil drain cap.
  5. Remove oil dipstick and fill crankcase with recommended oil.
  6. Crankcase holds about 1.4 liters; do not fill above FULL mark.
  7. Install and tighten dipstick before operating engine.

Specs & values

  • Crankcase capacity about 1.4 liters

Full service-parts list: Generac NP-50G →

Source: Generac 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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