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Generac — Before Startup Checks

Maintenance · generator

From a Generac service manual covering: NP45G, NP52G, NP55G, NP65G, NP66G, NP72G. Check it applies to your exact model before use.

Applies to: Generac NP66G, Generac V-Twin engine

Procedure

  1. Check air inlet and outlet openings for sufficient cooling and ventilating air flow.
  2. Inspect wiring connections for code compliance and safety.
  3. Check the generator exhaust system. Never operate a generator having defective exhaust piping or muffler.
  4. Inspect the engine-generator assembly. Never operate a damaged or defective unit.
  5. Check engine oil level and make sure an adequate supply of the proper fuel is available.

Full service-parts list: Generac NP66G →

Source: Generac service 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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