Unlock maximum performance: how to purge your generac generator for optimal output

Maintaining a Generac generator is essential for ensuring its optimal performance during power outages. One crucial task in this maintenance process is purging, which removes air from the fuel system to improve starting and operation. This blog post will provide a step-by-step guide on how to purge a Generac generator, ensuring you have a reliable backup power source when you need it most.

Gathering Necessary Tools

Before starting the purging process, gather the following tools:

• Safety glasses
• Work gloves
• Fuel filter wrench
• Fuel pump primer
• Funnel
• Clean diesel fuel

Safety Precautions

• Disconnect the generator from all power sources.
• Allow the generator to cool down completely.
• Wear safety glasses and gloves to protect yourself from fuel and other hazards.
• Work in a well-ventilated area to avoid fumes.

Step 1: Locate the Fuel Filter

Locate the fuel filter on the generator. In most Generac models, it is usually a cylindrical component attached to the fuel line near the carburetor.

Step 2: Remove the Fuel Filter

Using the fuel filter wrench, carefully loosen and remove the fuel filter. Allow any remaining fuel to drain into a container.

Step 3: Inspect the Fuel Filter

Inspect the fuel filter for any signs of dirt, debris, or damage. If the filter is clogged or damaged, replace it with a new one.

Step 4: Install the New Fuel Filter (if necessary)

If a new fuel filter is required, apply a thin layer of petroleum jelly to the O-rings and hand-tighten the filter onto the fuel line. Do not overtighten.

Step 5: Prime the Fuel Pump

Locate the fuel pump primer on the generator. It is typically a small black or red button located near the carburetor. Press the primer repeatedly until you feel resistance, indicating that the fuel line is full.

Step 6: Purge the Air from the Fuel System

• Place a funnel into the carburetor.
• Slowly pour clean diesel fuel into the funnel until it begins to overflow.
• Continue pouring until a steady stream of fuel flows out of the carburetor.
• This process purges any air from the fuel system.

Step 7: Reinstall the Fuel Filter

Once the fuel system is purged, reinstall the fuel filter. Tighten it securely using the fuel filter wrench.

Step 8: Start the Generator

• Reconnect the generator to power sources.
• Start the generator and let it run for a few minutes to ensure it is operating properly.

Troubleshooting Common Issues

• Generator won’t start: Ensure that the fuel filter is clean and properly installed. Check for any leaks or loose connections in the fuel system.
• Generator runs rough: Air may still be trapped in the fuel system. Repeat the purging process.
• Fuel leaks from the carburetor: Tighten the fuel filter and check for any cracks or damage to the fuel line.

The Bottom Line

Purging a Generac generator is a simple but essential maintenance task that can ensure its reliable performance. By following these steps, you can effectively remove air from the fuel system, improve starting, and extend the lifespan of your generator. Remember to perform this maintenance regularly to keep your backup power source ready for any unexpected power outages.

Top Questions Asked

• How often should I purge my Generac generator?
• It is recommended to purge the generator every 6 months or after every 100 hours of operation.

• Can I use gasoline in my Generac generator?
• No, Generac generators require diesel fuel. Using gasoline can damage the engine.

• What are the signs of a clogged fuel filter?
• Difficulty starting, rough running, and reduced power output.

• Is it safe to operate a Generac generator indoors?
• No, never operate a generator indoors. Carbon monoxide can build up and pose a serious health hazard.

• How do I store my Generac generator?
• Store the generator in a dry, well-ventilated area. Keep it covered to protect it from dust and moisture.