Generac NP-50G — Out of Service Protection
Maintenance · generator
For the Generac NP-50G, from the Generac owner's manual.
Applies to: Generac NP-50G, Generac GN-410 engine
Before you start
- Never store battery on concrete or earth floors
Procedure
- Start the engine and let it warm up.
- Close fuel shutoff valve in fuel supply line and let engine run out of fuel.
- While engine is still warm, drain oil completely and refill crankcase with SAE 10W30 oil, API SF.
- Attach tag to engine indicating oil viscosity and classification.
- Remove spark plug and pour two or three tablespoons clean engine oil into opening.
- Crank engine several times to distribute oil, then install and tighten spark plug.
- Remove battery and store in a cool, dry room on a wooden board.
- Clean and wipe the entire generator.
Specs & values
- SAE 10W30 Amazon eBay $54.99 oil having API Classification For Service SF
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.