360-499-6604 In Washington state’s wet, windy, outage-prone climate, generators can be lifesavers for homeowners. However, owning a generator means that you must complete regular, preventative maintenance to keep it in working order.
We’re going to share a comprehensive generator maintenance checklist for homeowners in Olympia and other surrounding cities. We’ll share monthly and annual maintenance schedules, a safety checklist for storm season, and more.
Why Generator Maintenance Matters in Olympia’s Weather
Olympia, WA’s weather is very wet and humid, which can cause generator performance issues if the unit is not well maintained. This high-moisture environment combined with long inactivity periods makes it essential to complete routine generator maintenance. You’ll want to ensure your generator is functioning properly before the next big storm hits.
Here are some of the reasons to prioritize following a generator maintenance schedule:
- Prevents emergency failure
- Reduces corrosion from moisture
- Ensures reliable startup during outages
- Extends equipment lifespan
Complete Generator Maintenance Checklist (Step-by-Step)
Follow this generator maintenance checklist to ensure your generator stays in tip-top shape year-round.
1. Check oil level
Make sure your generator is off and fully cooled before checking the oil level. Find the dipstick (usually under a yellow or orange colored cap on the engine). Then, pull out the dipstick, wipe it clean with a cloth, and reinsert it into the oil. Pull the dipstick out again and check the level. Top off the oil if needed.
2. Inspect and clean air filter
Next, inspect and clean the air filter to ensure airflow isn’t restricted. Check the air filter for blockages, dirt, or debris. For foam filters, wash with soapy water, rinse, and dry them, before reinserting them. Replace the air filter according to manufacturer guidelines.
3. Test the battery + terminals
Test your generator’s battery to ensure it is still in working condition. Use a DC voltage multimeter to test the battery. If it reads 12.6V or higher, the battery is charged. If it reads below 12.4V, the battery needs to be recharged or replaced.
Be sure to inspect the battery terminals for damage and corrosion and clean them with a battery-safe cleaner. Also, ensure that connections are tight.
4. Check coolant level
To check the coolant level, make sure the generator is off and cooled. Then, locate the coolant reservoir or radiator and see if the coolant level falls between the MIN/LOW and MAX/FULL markings. If needed, add some manufacturer-recommended coolant to the reservoir.
5. Inspect fuel lines for leaks
Next, inspect your generator’s fuel lines to ensure there aren’t any leaks. Check for wet spots, cracks, and worn areas. Also verify that all connections are tight.
6. Remove debris from enclosure
Use an air compressor or soft cloth to remove any debris from your generator’s enclosure. Check and clean the spark arrestor with carburetor cleaner.
7. Run generator for 20–30 minutes
Running your generator for 20-30 minutes monthly helps circulate oil, charge the battery, and keep it healthy, preventing fuel problems. This tests functionality, so you know it will work during an actual outage.
8. Test automatic transfer switch
To test your automatic transfer switch, open your main breaker to cut utility power, then let the generator kick in and transfer the load. Watch for indicator lights and listen for any usual sounds. Then, restore utility power and make sure the generator shuts down properly.
9. Inspect for leaks or corrosion
Complete a visual inspection for wet spots or leaks and corrosion on your unit. Look for rust, green or white buildup around connections, and leaks from fuel lines.
10. Check for error codes or alerts
Use the controller display to check for any error codes or alerts. There are common error codes and colored lights that may appear to indicate issues. Check your manual for each code’s meaning. If you notice a red light, call for professional service.
Generator Inspection Checklist for Homeowners
There are a handful of visual and mechanical checks that Washington homeowners can safely do on their own. These tasks include:
- Examine wiring for wear: Look for frayed insulation, discoloration, burns, or corrosion on your generator’s wiring. If any of these signs are present, call a professional electrician.
- Look for rust & moisture buildup: Rust and moisture buildup can lead to electrical shorts and poor performance. Check regularly for these signs and use preventative measures like covers and protectants.
- Verify vent clearance: Ensure there is 3-5 feet around all sides of the unit to allow for adequate airflow.
- Check casing and fasteners: Be sure the casing doesn’t show signs of damage or cracks. Loose fasteners can lead to potential failures. Check to ensure all components are secure.
- Confirm level placement & stability: Your generator should be placed on level ground for proper function.
Monthly and Annual Generator Maintenance Schedule
In Washington, it’s important to complete routine monthly generator maintenance at home in addition to professional annual inspections.
Monthly
- Run generator under light loads: Running the generator under a light load helps keep internal parts lubricated, circulate oil, and prevent fuel issues.
- Inspect for moisture/debris: Look for moisture and debris around the generator to catch any issues early.
- Check fluids: Check fuel, oil, and coolant levels to ensure they don’t need to be filled.
Annual
- Oil + filter change: You should have the oil and oil filter changed annually, following manufacturer guidelines.
- Fuel filter + air filter replacement: Replacing the fuel and air filters ensures the generator can function properly.
- Coolant flush (if liquid-cooled): If you have a liquid-cooled generator, a coolant flush should be completed annually to prevent corrosion and particle buildup.
- Spark plug inspection: Inspect your spark plugs annually for wear, corrosion, and proper gap. Replace them if dirty or corroded.
- Load bank test: A generator technician will use a load bank to simulate real-world conditions to test a generator’s performance.
Generator Safety Checklist for Storm Season
During storm season, it’s critical to understand how to operate your generator safely. There are a few key precautions Washington homeowners should follow when operating a generator during a storm. Follow these safety tips for severe weather:
- Keep outdoors with proper ventilation: Generators should always be kept outdoors and at least 20 feet away from your home.
- Use CO detectors: Be sure to install CO detectors in your home to prevent carbon monoxide poisoning.
- Keep generator dry: Generators must be kept dry during severe weather. Use a generator tent or canopy to shelter it from precipitation.
- Store fuel properly: Keep sealed fuel containers in a cool, dry, and well-ventilated area. Check for leaks or pressure periodically.
- Use grounded outdoor extension cords: If using a portable generator, use heavy-duty, 3-prong extension cords rated for outdoor use.
- Keep children & pets away during operation: Prevent safety hazards by keeping children and pets a good distance from the generator.
When to Seek Professional Help for Generator Issues
There are some times when professional help is required for generator issues to protect your safety. Seek professional help if you experience:
- Hard starting or stalling: If your generator won’t start or is frequently stalling, it can point to dirty air filters, blocked fuel lines, low oil, and other issues.
- Fuel leaks or smoke: If you notice fuel leaks or smoke coming from your generator, call a professional technician immediately.
- Electrical irregularities: Electrical issues can be caused by blown fuses, dead batteries, overloaded circuits, and more. Don’t attempt electrical work at home, leave it to a licensed electrician.
- Persistent warning lights: Warning lights, especially red lights, indicate that professional service is required.
If you have electrical or safety concerns, contact our licensed electricians at G & G Heating.
Learn More About Electrical Safety & Home Preparedness
Interested in learning more about how to maintain your generator? G & G Heating’s blog shares home safety tips and generator maintenance articles. Trust the experts for accurate home preparedness information.
G & G Heating proudly serves Olympia, Tumwater, Lacey, Yelm, and surrounding areas. Visit our website to learn more about our residential electrician services or contact our team today.
