Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›Generac›Changing the Oil and Oil Filter

Generac G0072100 — Changing the Oil and Oil Filter

Maintenance · engine lubrication system

For the Generac G0072100, from the Generac owner's manual.

Applies to: Generac G0072100, Generac G-Force 400 Series engine, Generac G-Force 800 Series engine, Generac G-Force 1000 Series engine

Before you start

  • Risk of burns. Allow engine to cool before draining oil or coolant.
  • Skin irritation. Avoid prolonged or repeated contact with used motor oil.
  • Engine damage. Verify proper type and quantity of engine oil prior to starting engine.

Parts for this job

Part numbers from the service-parts list for Generac G0072100. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Lift lid and press MANUAL to start engine; run until thoroughly warmed up; press OFF to shut down.
  2. Remove front panel when unit has cooled. Pull oil drain hose free of retaining clip.
  3. Remove cap from oil drain hose and place free end into a suitable container. Drain oil.
  4. Install cap on oil drain hose; position and secure hose with retaining clip.
  5. Remove oil filter by turning it counterclockwise.
  6. Apply a light coating of clean engine oil to gasket of new filter.
  7. Screw new filter on by hand until gasket contacts adapter; tighten an additional three-quarter to one full turn.
  8. Fill engine with recommended oil. See Engine Oil Requirements.
  9. Press MANUAL to start engine; run for one minute and inspect for leaks.
  10. Press OFF to stop engine; wait five minutes. Inspect oil level; add oil as needed. Do not overfill.
  11. Insert oil dipstick and/or attach fill cap. Press AUTO to return unit to AUTO.
  12. Close and lock lid. Dispose of used oil and filter per local, state, or national codes.

Tools required

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

Specs & values

  • Fill with recommended engine oil
  • Tighten filter 3/4 to 1 full turn after gasket contact

Full service-parts list: Generac G0072100 →

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.

More Generac repair guides →