How to Start a Portable Generator That Has Been Sitting: Essential Steps for Success

You’ve got your portable generator, a trusty backup for power outages, but it’s been sitting idle for a while. Now, you need it, but you’re not sure if it will even start. Don’t worry; this comprehensive guide will walk you through the steps on how to start a portable generator that has been sitting, ensuring you have power when you need it.

1. Safety First: A Reminder

Before you even think about starting your generator, prioritize safety. Always follow these essential precautions:

• Operate in a well-ventilated area: Generators produce carbon monoxide, a deadly gas. Ensure ample fresh air circulation.
• Never run your generator indoors: Even in garages or sheds, carbon monoxide can build up quickly.
• Keep flammable materials away: Fuel, oil, and other combustibles should be stored at a safe distance.
• Use extension cords with care: Ensure they are heavy-duty and rated for the generator’s wattage.
• Don’t overload the generator: Check the generator’s manual for its maximum output.

2. Inspecting Your Generator: A Thorough Checkup

Before attempting to start your generator, a thorough inspection is crucial. This will ensure everything is in working order and prevent potential problems.

• Check the fuel: Old fuel can gum up the engine. If it’s been more than six months, drain the old fuel and refill with fresh, stabilized gasoline.
• Inspect the oil: Check the oil level and ensure it’s clean. Replace it if necessary.
• Examine the spark plugs: Clean or replace the spark plugs if they appear corroded or worn.
• Inspect the air filter: A dirty air filter restricts airflow and can cause starting issues. Clean or replace it.
• Verify the battery (if applicable): If your generator has a battery, check its charge level and replace it if necessary.

3. Priming the Engine: Getting Ready to Start

Priming the engine is essential for a smooth start, especially after a long period of inactivity.

• Locate the primer bulb: This is typically a small, rubber bulb near the carburetor.
• Pump the primer bulb: Pump it several times until you see fuel flowing through the transparent lines.
• Wait a few seconds: Allow the fuel to reach the carburetor before attempting to start.

4. Starting the Generator: The First Crank

With your generator prepped and ready, it’s time to start it:

• Turn the fuel valve to the “ON” position: This allows fuel to flow to the engine.
• Check the choke: If the generator has a choke, engage it to enrich the fuel mixture for easier starting.
• Turn the key to the “START” position: If your generator has a recoil starter, pull the cord firmly and quickly.
• Be patient: It might take a few tries for the engine to catch. Don’t give up!

5. Troubleshooting Common Starting Issues: Identifying the Problem

If your generator won‘t start, don’t panic. There are a few common issues to troubleshoot:

• No fuel: Double-check that the fuel valve is open and there’s fuel in the tank.
• Spark plug issues: Check the spark plug for a spark. If there’s no spark, clean or replace the plug.
• Dirty air filter: Ensure the air filter is clean and not restricting airflow.
• Flooded engine: If you’ve tried starting it repeatedly, the engine might be flooded. Let it sit for a few minutes to allow the excess fuel to evaporate.
• Battery issues: If your generator has a battery, check its charge level.
• Mechanical problems: If none of the above solutions work, there could be a mechanical issue. Consult a qualified mechanic.

6. Running the Generator: A Smooth Operation

Once your generator is running, let it warm up for a few minutes before connecting any appliances.

• Monitor the engine: Listen for any unusual noises or vibrations.
• Check the oil level: Ensure the oil level is adequate.
• Keep an eye on the fuel gauge: Refuel before the tank runs dry.
• Don’t overload the generator: Avoid exceeding its maximum output.

7. Shutting Down the Generator: A Safe Ending

When you’re finished using your generator, shut it down properly:

• Reduce the load: Disconnect any appliances connected to the generator.
• Let the engine idle for a few minutes: This allows the engine to cool down.
• Turn the fuel valve to the “OFF” position: This prevents fuel from leaking.
• Turn the key to the “OFF” position: If your generator has a recoil starter, ensure the cord is fully retracted.
• Let the generator cool down completely: Before storing it, allow it to cool down to prevent fire hazards.

Maintaining Your Generator: Staying Ready for the Next Time

Regular maintenance is crucial for ensuring your generator starts reliably when you need it.

• Change the oil regularly: Follow the manufacturer’s recommended oil change schedule.
• Clean the air filter: Clean or replace the air filter as needed.
• Inspect the spark plugs: Check the spark plugs for wear and tear and replace them if necessary.
• Store the generator properly: Keep it in a dry, well-ventilated area.
• Run the generator regularly: Start it up and run it for a few minutes every month to keep the fuel fresh and the engine lubricated.

Final Thoughts: Power Up Your Preparedness

Knowing how to start a portable generator that has been sitting is essential for peace of mind during power outages. By following these steps and practicing regular maintenance, you can ensure your generator is ready to provide reliable power when you need it most.

What You Need to Learn

1. How often should I change the oil in my generator?
The frequency of oil changes depends on the generator’s model and usage. Consult your owner’s manual for specific recommendations. Generally, it’s recommended to change the oil every 25 hours of use or annually, whichever comes first.
2. What type of gasoline should I use for my generator?
Always use fresh, clean, unleaded gasoline with a minimum octane rating of 87. Avoid using gasoline that’s more than 30 days old, as it can degrade and cause starting issues.
3. Can I use my generator to power my entire house?
While some generators have high enough wattage to power your entire house, it’s not recommended. Most generators are designed for specific loads and can be overloaded if you connect too many appliances.
4. What are the signs of a flooded engine?
A flooded engine will typically crank but won’t start. You might also smell gasoline fumes.
5. What should I do if my generator starts but runs poorly?
If your generator starts but runs poorly, it could be a sign of a fuel system problem, an air filter issue, or a spark plug problem. Inspect these components and address any issues.