Unboxing and Testing the Firman WH03242 4000 Watt Dual Fuel Inverter Generator

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Unboxing and Testing the Firman WH03242 4000 Watt Dual Fuel Inverter Generator

Table of Contents:

  1. Introduction
  2. Unboxing the Generator
  3. Adding Oil
  4. Connecting the Battery
  5. Filling with Gasoline
  6. Starting the Generator
  7. Using Propane as Fuel
  8. Testing the Generator
  9. Running Appliances with the Generator
  10. Conclusion


In this article, we will be discussing the unboxing, setup, and usage of a generator. We will cover topics such as adding oil, connecting the battery, filling with gasoline, starting the generator, and using propane as fuel. Additionally, we will test the generator and see how it runs appliances. By the end of this article, you will have a better understanding of how to properly set up and utilize a generator for your power needs.

Unboxing the Generator

When unboxing the generator, there are several components to take note of. These include the bonus cover, which provides extra protection for the generator, the regulator, which allows for the use of propane as fuel, and the 12 volt adapter that provides 12 volts on the generator. Additionally, there are tools such as a spark plug wrench and screws that may be included. Finally, there is initial forumen oil and a battery charger for the push button start battery.

Adding Oil

Before starting the generator, it is important to add oil to ensure proper lubrication of the engine. The oil can be accessed through the maintenance control panel. Using the provided screwdriver, remove the panel and locate the oil fill tube. Add the recommended type of oil, such as 10w30, and check the oil level using the dipstick. Ensure that the oil level is at the correct level, around three quarters on the dipstick.

Connecting the Battery

To enable the push button start feature, the battery must be properly connected. Locate the battery connection underneath the maintenance cover and use the provided tools to release any ties holding it in place. Connect the battery by pushing the connector together, ensuring it is securely attached.

Filling with Gasoline

To fuel the generator, fill the tank with gasoline. The fuel level capacity is typically indicated on the cap or fuel gauge. Use a funnel to pour the gasoline into the tank, taking care not to overfill. It is recommended to start with about a gallon to three quarters of a gallon for a new generator.

Starting the Generator

There are two starting sequences associated with running the generator on gas: the pull start and the electric push start. For the pull start, set the main switch to the first position, push the battery button for about three seconds, and pull out the choke. Ensure that there is gas in the generator and then pull the starter cord to start the engine. For the electric push start, set the switch to the first position, push the battery button for three seconds, turn off the choke (if the engine is warm), and push the button into the second position to start the engine.

Using Propane as Fuel

For those who prefer to use propane as fuel, a propane regulator must be installed. Attach the regulator to the generator, ensuring the longer screw is used for the proper connection. Connect the plug to the generator and the propane tank. Start the generator as usual and switch the fuel selector to the propane position.

Testing the Generator

To test the generator, it is recommended to run appliances such as an air conditioner. Start the generator and turn on the appliances, monitoring the generator's performance. Check for voltage output, ensure the overload light is not on, and observe if the appliances are running smoothly.

Running Appliances with the Generator

When running appliances with the generator, it is essential to consider the wattage requirements of each device. Ensure that the generator can handle the load and avoid overloading it. It is also important to follow safety precautions and keep the generator in a well-ventilated area.


In conclusion, a generator can be a useful tool for providing power in various situations. By following the setup instructions, adding oil, connecting the battery, and filling with gasoline, you can ensure that your generator is ready for operation. Whether using gas or propane as fuel, it is important to properly start and test the generator before relying on it for power. Always consider the power requirements of your appliances and use the generator responsibly to avoid damage or accidents.


Q: Can I use any type of oil in the generator? A: It is recommended to use the type of oil specified in the manual, such as 10w30. Using the correct oil will ensure proper lubrication and performance of the generator.

Q: How often should I change the oil in the generator? A: The frequency of oil changes will depend on the usage and running hours of the generator. It is recommended to check the manual for the manufacturer's recommendations on oil change intervals.

Q: Can I switch between gas and propane while the generator is running? A: Switching between gas and propane fuel sources while the generator is running is not recommended. It is best to shut off the generator and allow it to cool down before making any fuel source changes.

Q: Can I run sensitive electronics on the generator? A: Generator power can be inconsistent, which may not be suitable for sensitive electronics. It is recommended to use surge protectors or voltage regulators to ensure the safety of your electronics.

Q: How often should I perform maintenance on the generator? A: Regular maintenance, such as oil changes, spark plug replacements, and air filter cleanings, should be performed according to the manufacturer's recommendations. This will help ensure the longevity and optimal performance of the generator.

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