Generator Winterizing for Storage

Properly winterizing your generator is essential to ensure reliable performance and long-term durability. Whether you’re storing it for the season or preparing for months of inactivity, a few simple maintenance steps will keep your generator in peak condition and ready to start when you need it most.

1. Drain or Stabilize the Fuel

Fuel left in the tank for long periods can degrade, causing hard starts and engine damage. If your generator will sit for more than 30 days, add a fuel stabilizer to the tank and run the engine for a few minutes to circulate it through the carburetor. Alternatively, you can drain the fuel tank and carburetor completely to prevent varnish buildup and clogged jets.

2. Change the Oil and Filter

Used oil contains contaminants that can corrode internal engine parts over time. Before storing your generator, perform an oil change and replace the oil filter if applicable. This helps protect the engine during extended storage and ensures it’s ready for operation when needed.

3. Clean the Air Filter

Inspect the air filter and clean or replace it as necessary. A clean filter helps prevent dust, dirt, and moisture from entering the engine while in storage.

4. Disconnect and Maintain the Battery (for electric start models)

If your generator has an electric start, disconnect the battery and store it in a cool, dry place. Consider using a battery maintainer or trickle charger to keep it fully charged during the off-season.

5. Protect the Exterior

Clean the exterior of your generator to remove dirt, grease, and debris. Once dry, cover it with a breathable, weather-resistant cover to shield it from dust and moisture. Avoid using plastic tarps, as they can trap condensation and cause corrosion.

6. Store in a Dry, Ventilated Location

Store your generator in a dry, sheltered, and well-ventilated area away from direct sunlight or extreme temperatures. Avoid storing near furnaces, water heaters, or open flames.

7. Start It Occasionally (Optional)

If possible, start your generator every 30–60 days and let it run for a few minutes to circulate oil and keep seals lubricated. This prevents gaskets from drying out and ensures everything remains in good working order.

Taking the time to properly winterize your generator will help extend its lifespan, prevent costly repairs, and ensure dependable performance when power is needed most.