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Generac 9734 / NP-66LPG — Return the Unit to Service after Storage

Maintenance · generator

For the Generac 9734 / NP-66LPG, from the Generac owner's manual.

Applies to: Generac 9734, Generac NP-66LPG, Generac GN-480 engine

Before you start

  • Do not use tap water in the battery

Procedure

  1. Check tag on engine for oil viscosity and classification; verify correct oil is used, drain and refill if necessary.
  2. Check battery; fill all cells to proper level with distilled water and recharge to 100% state-of-charge.
  3. Turn OFF all electrical loads, then start the engine.
  4. Let the engine warm up.
  5. Apply electrical loads to at least 50% of the unit's rated wattage capacity.
  6. When the engine is thoroughly warmed, shut it down.

Specs & values

  • At least 50% of rated wattage capacity

Full service-parts list: Generac 9734 →, Generac NP-66LPG →

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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