Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›Generac›Return to Service

Generac IQ3500 — Return to Service

Installation · 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

Before you start

  • The exercise timer and current date and time must be reset when the battery is dead or has been disconnected.

Procedure

  1. Verify that utility power is turned off.
  2. Check the tag on the engine for oil viscosity and classification; drain and refill if necessary.
  3. Check the state of the battery; fill unsealed batteries to proper level with distilled water; recharge to 100%.
  4. Clean and wipe down the entire generator.
  5. Make sure the 7.5 Amp fuse is removed from the generator Control Panel.
  6. Reconnect the battery. Observe battery polarity. Install positive cable first.
  7. Reconnect the battery charger AC input T1/Neutral cable (white sleeve) at controller.
  8. Open the fuel shutoff valve.
  9. Insert the 7.5 Amp fuse into the generator Control Panel.
  10. Start the unit by pressing the MANUAL button. Allow the unit to warm up for a few minutes.
  11. Stop the unit by pressing the Control Panel OFF button.
  12. Turn on the utility power to the transfer switch.
  13. Set the Control Panel to AUTO.

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.

More Generac repair guides →