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Home›Repair guides›Generac›Servicing the Engine Air Cleaner

Generac NP-66G — Servicing the Engine Air Cleaner

Maintenance

For the Generac NP-66G, from the Generac owner's manual.

Applies to: Generac NP-66G, Generac GN-480 engine

Before you start

  • Do NOT use a forceful spray of water to clean the generator

Parts for this job

Part numbers from the service-parts list for Generac NP-66G. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Turn knob counterclockwise to loosen.
  2. Remove cover, foam pre-cleaner and paper filter.
  3. Wash foam pre-cleaner in liquid detergent and water.
  4. Wrap in cloth and squeeze dry; saturate in engine oil and squeeze out excess.
  5. Install foam pre-cleaner into cover, followed by paper filter with tabs in slots.
  6. Insert bottom locking tag of cover into slot and install cover.

Specs & values

  • Clean and re-oil foam pre-cleaner every 3 months or 25 hours
  • Replace paper filter yearly or every 100 hours

Full service-parts list: Generac NP-66G →

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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