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Generac QuietPact 40 LP — Changing the Engine Oil and/or Oil Filter

Maintenance

For the Generac QuietPact 40 LP, from the Generac owner's manual.

Applies to: Generac QuietPact 40 LP, Generac GN-220 engine

Before you start

  • Do not fill above the FULL mark.

Parts for this job

Part numbers from the service-parts list for Generac QuietPact 40 LP. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Run the engine until thoroughly warmed up (at least five minutes) then shut OFF.
  2. Remove the plug from the oil drain tube with a 5/16 inch allen wrench and drain the oil into a suitable container.
  3. After the oil has drained, replace the plug onto the end of the oil drain tube.
  4. Remove the old oil filter by turning it counterclockwise. Place a towel underneath to catch excess oil.
  5. Apply a light coating of clean engine oil to the gasket of the new filter and fill the filter with clean oil.
  6. Screw the new filter on by hand until its gasket lightly contacts the oil filter adapter, then tighten an additional 3/4 to one turn.
  7. Add the proper type and amount of recommended oil until it reaches the dipstick FULL mark.
  8. Install and tighten the oil fill cap and the dipstick.
  9. Start the engine and check for leaks.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Oil filter tightened 3/4 to one turn after gasket contact
  • Oil capacity with filter 0.8 L / 0.84 qt

Full service-parts list: Generac QuietPact 40 LP →

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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