Home›Repair guides›Generac›Return Unit to Service After Storage

Generac — Return Unit to Service After Storage

Maintenance · Generator set

From a Generac owner's manual covering: 9735, Q-55LP, Q-70LP. Check it applies to your exact model before use.

Applies to: Generac 9735, Generac Q-55LP, Generac GN-480 engine, Generac GN-570 engine

Before you start

  • Do not use jumper cables or booster battery to crank and start the generator engine

Procedure

  1. Check tag on engine for oil viscosity and classification; verify correct oil is used.
  2. Check battery; fill all cells to proper level with distilled water.
  3. Recharge battery to 100% state of charge or replace if defective.
  4. Turn OFF all electrical loads, turn on fuel supply, then start engine.
  5. Let engine warm up.
  6. Apply electrical loads to at least 50% of rated wattage capacity.
  7. When thoroughly warmed up, turn off electrical loads and shut down.

Specs & values

  • DO NOT USE TAP WATER IN THE BATTERY

Full service-parts list: Generac 9735 →, Generac Q-55LP →

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 →