How to Maintain Your Standby Generator for Reliable Backup Power

A backup generator is a lifesaver when storms strike or the grid goes down. But like any piece of machinery, a generator requires regular maintenance to stay reliable. At McCay Southern Generators, we emphasize the importance of routine care so your Generac whole home generator or standby system performs flawlessly when you need it most.

In this guide, we’ll share practical generator maintenance tips to keep your system in top condition and ensure your home stays powered during an outage.

1. Perform Regular Visual Inspections

Start with simple checks around your generator:

• Look for leaks, loose wires, or corrosion.

• Inspect the fuel lines for cracks or damage.

• Ensure the area around the generator is clear of debris, leaves, and other obstructions.

A quick visual inspection can catch potential issues before they turn into costly repairs.

2. Check Oil and Fluid Levels

Generators need proper lubrication to run smoothly. Follow your manufacturer’s recommendations for:

• Engine oil – check monthly and change every 100–200 hours of operation or as specified.

• Coolant levels – essential for liquid-cooled generators.

• Battery fluid – for models with a wet-cell battery.

Maintaining the right fluid levels extends the lifespan of your generator and prevents breakdowns during critical times.

3. Test Your Generator Regularly

Running your generator periodically ensures it’s ready for an outage:

• Weekly or bi-weekly test runs allow the engine to circulate fluids and maintain battery charge.

• Use automatic test features if your generator has an Automatic Transfer Switch (ATS).

• Listen for unusual noises or vibrations that could indicate mechanical issues.

Routine testing helps you catch problems early and keeps your system reliable.

4. Keep Your Generator Clean

Dust, dirt, and debris can interfere with your generator’s performance.

• Wipe down the exterior and remove debris from vents and grills.

• Keep the surrounding area clear to ensure proper airflow.

• Avoid spraying water directly on the generator when cleaning.

A clean generator runs more efficiently and reduces the risk of overheating.

5. Schedule Professional Maintenance

Even with regular DIY checks, professional maintenance is essential:

• Annual inspections by a licensed technician ensure the generator is safe and code-compliant.

• Technicians check the fuel system, ignition, and control panels.

• Any worn or faulty parts are replaced before they cause downtime.

At McCay Southern Generators, our experts handle full-service maintenance, keeping your Generac generator reliable year after year.

6. Monitor Fuel Supply

For standby generators that run on propane, natural gas, or diesel:

• Ensure your fuel source is sufficient and lines are in good condition.

• Replace fuel filters as recommended by the manufacturer.

• For diesel generators, rotate fuel periodically to prevent degradation.

Proper fuel management ensures your generator starts immediately during an outage.

Final Thoughts: Reliability Starts with Maintenance

A well-maintained generator is your ultimate safeguard against power outages. Following these tips—combined with professional service from McCay Southern Generators—ensures your backup generator is always ready to protect your home and family.

Don’t wait for the next storm. Schedule your generator maintenance today and enjoy peace of mind knowing your home will never be left in the dark.

Call 423-455-5336 or schedule your Free Home Power Assessment today.