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Generac — Removal from Service (Storage Preparation)

For these Generac models: 004666, 004666-1, 005011, 005011-0, Model 004666, Model 005011.

Applies to: Generac Model 004666, Generac Model 005011

Before you start

  • Never store battery on concrete or earthen floor.

Procedure

  1. Start the engine and let it warm up.
  2. Close the fuel shutoff valve in the fuel supply line and allow the unit to shut down.
  3. Once the unit has shut down, it will signal a low oil fault.
  4. Set the AUTO/OFF/MANUAL switch to OFF and turn off the utility power to the transfer switch.
  5. While the engine is still warm from running, drain the oil completely and refill the crankcase.
  6. Attach a tag to the engine indicating the viscosity and classification of the oil in the crankcase.
  7. Remove the spark plug(s) and spray fogging agent into the spark plug(s) threaded openings.
  8. Reinstall and tighten the spark plug(s).
  9. Remove the battery and store it in a cool, dry room on a wooden board.
  10. Clean and wipe the entire generator.

Source: manual:centurion_manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.