Generac G0070420 — Battery Maintenance (Inspection)
Maintenance
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. Do not dispose of batteries in a fire.
- Electrical shock. Disconnect battery ground terminal before working on battery or battery wires.
- Explosion. Always disconnect negative battery cable first to avoid spark.
Parts for this job
- 0H3421S Battery Amazon eBay $283.32
Part numbers from the service-parts list for Generac G0070420. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Press OFF to shut down generator; lift lid and remove front panel.
- Remove the 7.5 amp fuse from the control panel.
- Remove the intake side panel.
- Disconnect the white battery charger cable.
- Inspect battery posts and cables for tightness and corrosion; tighten and clean as necessary.
- (Unsealed batteries only): Disconnect battery; check fluid level and fill with distilled water only. Have state of charge checked.
- When inspection complete, reconnect battery cables and battery charger cable; reinstall intake side panel and 7.5 amp fuse.
- Reinstall front panel and close lid.
- Place controller in AUTO mode.
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.