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

Generac Q-70G — Return to Service

Maintenance · Generator

For the Generac Q-70G, from the Generac owner's manual.

Applies to: Generac GN-480 engine

Before you start

  • DO NOT USE TAP WATER IN THE BATTERY.
  • Damage may occur if the battery is connected incorrectly.

Procedure

  1. Check the tag on the engine for oil viscosity and classification; verify correct recommended oil is used, and drain and refill if necessary.
  2. Check the state of the battery; fill unsealed batteries with distilled water, recharge to 100 percent or replace if defective.
  3. Clean and wipe the entire generator.
  4. Reconnect the battery, observing battery polarity.
  5. Turn OFF all electrical loads. Add fuel if necessary and then start the engine.
  6. Allow the unit to warm up thoroughly.
  7. Apply electrical loads to at least 50 percent of the unit's rated wattage capacity.
  8. When the engine is thoroughly warmed up, shut it down.

Specs & values

  • Load to at least 50 percent of rated wattage capacity

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 →