Generac G0070420 — Remove From Service (Storage over 90 days)
Maintenance · Generator
For the Generac G0070420, from the Generac owner's manual.
Applies to: Generac G0070420, Generac GH-426 engine, Generac GTH-530 engine, Generac GT-999 engine
Before you start
- Explosion. Batteries emit explosive gases. Always disconnect negative battery cable first to avoid spark.
Procedure
- Start the engine and let it warm up.
- Close the fuel shutoff valve in the fuel supply line and allow engine to stop.
- Set generator MLCB (generator disconnect) to OFF (OPEN).
- Turn off the utility power to the transfer switch.
- Remove battery charger AC input T1/Neutral cable (white sleeve) at controller.
- Remove the 7.5 amp fuse from the generator control panel.
- Disconnect battery cables; remove negative cable first.
- Drain oil completely while engine is still warm, then refill crankcase with oil.
- Attach a tag to the engine indicating viscosity and classification of new oil.
- Remove spark plug(s) and spray fogging agent into threaded openings; reinstall and tighten to specification.
- Remove battery and store in cool, dry room on a wooden board.
- Clean and wipe down the entire generator.
Full service-parts list: Generac G0070420 →
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.