Generac 005222-0 / QT 3.9L 40kW — Changing Engine Oil
Maintenance · Engine crankcase / oil filter
For the Generac 005222-0 / QT 3.9L 40kW, from the Generac owner's manual.
Applies to: Generac QT 3.9L 40kW, Generac V-type engine
Before you start
- NEVER OPERATE ENGINE WITH OIL BELOW THE DIPSTICK "ADD" MARK.
- Do not overtighten the oil filter.
Parts for this job
- 0E7415 Oil filter Amazon eBay $81.99 NAPA $3.59
Part numbers from the service-parts list for Generac QT 3.9L 40kW. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Remove OIL DRAIN HOSE from its retaining clip.
- Loosen and remove OIL DRAIN HOSE CAP. Drain oil completely into suitable container.
- When all oil has drained, install and tighten OIL DRAIN HOSE CAP, re-install into retaining clip.
- Turn OIL FILTER counterclockwise and remove. Dispose of old filter.
- Apply light coating of new engine oil to seal of new oil filter. Install filter and tighten by hand only.
- Remove OIL FILL CAP. Add recommended oil. Do not fill above dipstick FULL mark.
- Start engine and check for oil leaks.
Specs & values
- Crankcase oil capacity is 4.0 U.S. quarts (3.8 liters)
Full service-parts list: Generac QT 3.9L 40kW →
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.