A generator is easiest to rely on when you prepare it before it sits unused. Old fuel, moisture, dust, and a neglected battery can all make startup harder. A short storage routine helps protect the engine and gives you a clear checklist for the next time you need backup power. Start with the owner’s manual: fuel systems and storage instructions vary by model, and the manufacturer’s directions should guide each step.
Handle Fuel Before Storage
Gasoline can deteriorate while it sits and may leave deposits in the fuel system. For storage lasting more than a few weeks, check the manual for the recommended approach: draining the tank and carburetor, or adding a fuel stabilizer. If you use stabilizer, follow its label, add it to fresh fuel, and run the generator long enough for the treated fuel to reach the engine.
Before draining fuel, turn the generator off and let it cool completely. Work outdoors, away from flames, sparks, pilot lights, and smoking. Use an approved fuel container, prevent spills, and dispose of old gasoline according to local rules. Never store fuel in the generator’s tank unless the manufacturer’s instructions permit it.
Clean and Inspect the Generator
Disconnect the spark plug wire or follow the manual’s procedure to prevent accidental starting. Wipe the exterior with a dry or slightly damp cloth, then clear debris from the air intake, cooling areas, and exhaust outlet. Keep water away from electrical components, controls, and the engine. Let every surface dry before covering or storing the unit.
Check for loose fasteners, cracked fuel lines, leaks, corrosion, or damaged cords. Clean or replace the air filter if the manual calls for it, and inspect the spark plug and oil level as directed. Fix problems before storage rather than leaving them for an emergency. If you find a fuel leak or damaged electrical parts, don’t run the generator until it’s repaired.
Choose a Safe Storage Spot
Store the generator in a dry, well-ventilated area protected from rain, snow, and direct moisture. Keep it away from living spaces, doors, windows, ignition sources, and materials that could catch fire. A generator can release carbon monoxide when running, so never operate it in a garage, shed, or other enclosed space—even with the door open.
Once the unit is clean and completely dry, use a breathable cover made for generators. Avoid wrapping it tightly in plastic, which can trap moisture and encourage corrosion. Keep the machine level, secure it against tipping, and store accessories and the manual nearby so you can find them when needed.
Prepare the Battery and Restart
If your generator has a battery, check the manual for storage guidance. Some batteries should be disconnected; others may need periodic charging with a compatible charger. Keep battery terminals clean and dry, and don’t charge a battery near fuel or fuel vapors. For a generator without an electric start, protect the spark plug wire and keep the pull-start handle clear of clutter.
When it’s time to use the generator again, inspect it for leaks, pests, and moisture before starting. Reconnect the battery if needed, check the oil and fuel, and follow the manual’s startup procedure. Run the generator outdoors, far from buildings and openings, then test it under a suitable load. Sacramento Small Engine can help with maintenance or repairs if your generator needs attention.
A little preparation now can prevent stale-fuel trouble, corrosion, and avoidable startup delays later. Follow your generator’s manual, store it dry and safely, and inspect it before the next use. If you’re unsure about fuel-system maintenance or spot a problem, contact a qualified small-engine repair shop for guidance.