Generac — Maintaining the Engine Air Cleaner (Foam Precleaner)

Maintenance

From a Generac owner's manual covering: PP50G, PP70G, PRIMEPACT 50, PRIMEPACT 70. Check it applies to your exact model before use.

Applies to: Generac PP50G, Generac PP70G, Generac PRIMEPACT 70, Generac GN-480 engine

Procedure

1. Turn the knob counterclockwise to loosen.
2. Remove the cover, foam precleaner and paper filter.
3. Remove the foam precleaner from the cover.
4. Wash the foam precleaner in liquid detergent and water.
5. Wrap the foam precleaner in a clean cloth and gently squeeze it dry.
6. Saturate the foam precleaner in clean engine oil, then gently squeeze out excess oil (do not twist).
7. Install the foam precleaner into the cover, followed by the paper filter with tabs locked into slots.
8. Install the cover, foam precleaner and paper filter.
9. Replace the knob to retain the filter in place.

Full service-parts list: Generac PP50G →, Generac PP70G →, Generac PRIMEPACT 70 →

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 →