Generac — EcoGen Oil Change Procedure
Maintenance · Engine
From a Generac owner's manual — check it applies to your exact model before use.
Applies to: Generac 15 kW EcoGen, Generac G-Force 1000 Series engine
Before you start
- Skin irritation from used motor oil
Parts for this job
- 070185E Oil filter Amazon eBay $30.00 NAPA $9.09 FridayParts $45.99
Part numbers from the service-parts list for Generac 15 kW EcoGen. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Place MLCB to OFF
- Press MANUAL button to operate unit for minimum 20 minutes to reach operating temp
- Press OFF button to shut down engine
- Allow oil to settle for 10 minutes
- Remove used oil filter, remove oil dipstick
- Attach drill pump, insert 1/4in hose into oil tank, 1/2in hose into catch container
- Spin pump on high speed, draw out 2.5-3.5 quarts (2.37-3.31 L) of oil
- Apply light coat of new oil to new filter gasket, install filter hand-tight plus 3/4 to 1 full turn
- Refill oil tank to FULL mark, start engine for one minute, check for leaks
- Stop engine 10 minutes, recheck oil level, add if necessary
- Place MLCB to ON, press AUTO button
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Oil removed: 2.5-3.5 quarts (2.37-3.31 L)
Full service-parts list: Generac 15 kW EcoGen →
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.