Generac G0070420 — Changing the Oil and Oil Filter
Maintenance · Engine
For the Generac G0070420, from the Generac owner's manual.
Applies to: Generac G0070420, Generac GH-426 engine, Generac GTH-530 engine, Generac GT-999 engine
Before you start
- Risk of burns. Allow engine to cool before draining oil.
- Skin irritation. Avoid prolonged or repeated contact with used motor oil.
Parts for this job
- 070185E Oil filter Amazon eBay $30.00 NAPA $9.09 FridayParts $45.99
Part numbers from the service-parts list for Generac G0070420. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Start engine in MANUAL and run until thoroughly warmed up; press OFF.
- Lift lid, remove front panel; pull oil drain hose free of retaining clip.
- Remove cap and drain oil into suitable container.
- Replace cap; reposition and secure hose with retaining clip.
- Remove old oil filter by turning counterclockwise.
- Apply light coating of clean engine oil to new filter gasket.
- Screw new filter on by hand until gasket lightly contacts adapter; tighten 3/4 to one full turn.
- Refill engine with recommended oil.
- Start engine, run one minute and check for leaks.
- Stop engine and wait five minutes.
- Recheck oil level; add oil as needed. DO NOT OVERFILL.
- Reinsert oil dipstick and/or reattach fill cap.
- Press AUTO button to return unit to AUTO mode.
- Dispose of used oil and filter at a proper collection center.
Specs & values
- Synthetic SAE 5W-30 Amazon eBay $47.95
Full service-parts list: Generac G0070420 →
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.