Generac — Storage Preparation
Maintenance · fuel system
From a Generac owner's manual — check it applies to your exact model before use.
Browse Generac generators & specs →
Before you start
- Never store engine with fuel in tank indoors
Procedure
- Add gasoline stabilizer, run unit 10-15 minutes
- After cooling, remove all gasoline from tank using non-conductive vacuum siphon
- Start and run engine until it stops from lack of fuel
- After cooling, drain oil and refill with recommended grade
- Remove spark plug, pour ~1/2 oz oil into cylinder, pull recoil starter a couple times
- Install and tighten spark plug, do not connect wire
- Clean generator outer surfaces
- Store unit in a clean, dry place
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.