Generac IQ3500 — Removal From Service
Maintenance · Generator
For the Generac IQ3500, from the Generac owner's manual.
Applies to: Generac IQ3500, Generac GH-410 engine, Generac GT-530 engine, Generac GT-530 engine, Generac GT-990 engine, Generac GT-999 engine
Procedure
- Start the engine and let it warm up.
- Close the fuel shutoff valve in the fuel supply line and allow the unit to shut down.
- Set the generator's Main Circuit Breaker (Generator Disconnect) to its OFF (OPEN) position.
- Turn off the utility power to the transfer switch.
- Remove the 7.5 Amp fuse from the generator's Control Panel.
- Disconnect the battery cables. Remove negative cable first.
- Remove battery charger AC input T1/Neutral cable (white sleeve) at controller.
- While the engine is still warm, drain the oil completely, then refill the crankcase with oil.
- Attach a tag to the engine indicating viscosity and classification of the new oil.
- Remove spark plug(s), spray a fogging agent into the threaded openings, reinstall and tighten.
- Remove the battery and store it in a cool, dry room on a wooden board.
- Clean and wipe down the entire generator.
Full service-parts list: Generac IQ3500 →
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.