Rajan Wilcox
Adding an auxiliary fuel tank to a generator is a great way to increase the fuel capacity of your generator and ensure an uninterrupted power supply. This is especially useful if you're dealing with power outages or natural disasters, as you won't need to worry about refuelling your generator every few hours. The process of adding an auxiliary tank is not too complicated and can be done within a few hours with the right tools and instructions. In this article, we will discuss the different methods for adding an auxiliary fuel tank, including gravity-fed systems, quick-connect setups, and fuel pump installations. We will also provide a step-by-step guide to help you safely add an auxiliary fuel tank to your generator.
| Characteristics | Values |
|---|---|
| Purpose of adding an auxiliary fuel tank | To increase the fuel holding capacity of the generator and have an uninterrupted supply of electricity |
| When to add an auxiliary fuel tank | When the current generator is unable to operate on its single tank |
| Where to buy the materials | Boating supply company or store like Wal-mart |
| Materials needed | Ventilation and exhaust system, fuel pump, squeeze ball, quick connect/disconnect couplings, etc. |
| Procedure | Drill a hole in the cap of the generator tank, insert a brass fitting, connect the generator and the fuel tank using a marine ball pump and hose |
| Tips | Ensure the hose is long enough for safety and convenience; step down the hose size if it's too long |
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What You'll Learn
The benefits of an auxiliary fuel tank
Benefits of an Auxiliary Fuel Tank
An auxiliary fuel tank is a great way to ensure your generator can run for longer periods without the need for frequent refuelling. Here are some detailed benefits of adding an auxiliary fuel tank to your generator:
Extended Run Time
One of the main advantages of an auxiliary fuel tank is that it provides additional fuel capacity, allowing your generator to run for a more extended period before refuelling. This is especially useful if you require a constant power supply without interruptions, such as during power outages or for extended outdoor activities. With an auxiliary tank, you can avoid the hassle of refuelling every few hours.
Safe Refuelling
Auxiliary fuel tanks enable safe refuelling practices. By using an auxiliary tank, you eliminate the need to refuel the generator directly, reducing the risk of spills and fires. This is a significant advantage, as refuelling a hot generator can be extremely dangerous and has been known to cause personal injuries. With an auxiliary tank, you can refuel at a safe distance from the generator, minimising hazards.
Easy Transportation
Some auxiliary fuel tanks come with built-in wheels or a hand truck/stand, making them easy to transport, even when full. This feature allows for convenient refuelling, as you can easily move the auxiliary tank to a gas station if needed. Additionally, the ability to transport a full tank safely ensures that you can set up your generator wherever needed without worrying about refuelling limitations.
Versatility
Auxiliary fuel tanks offer versatility in their setup and usage. They can be used with various generator models and fuel types, including gasoline and diesel. Additionally, you can choose between different tank sizes, such as 5-gallon, 14-gallon, or larger capacities, depending on your specific requirements and space constraints.
Convenience and Reliability
An auxiliary fuel tank adds convenience and reliability to your generator setup. You won't need to worry about frequent refuelling or running out of fuel during critical periods. This is especially beneficial in emergency situations or locations where fuel access may be limited. An auxiliary tank ensures a constant and reliable fuel supply for your generator.
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The materials needed
- An auxiliary fuel tank: The size and type of fuel tank will depend on your specific needs and the generator's fuel capacity. Common sizes include 3-gallon, 5-gallon, and 18-gallon tanks. You can choose between different materials such as aluminium, plastic, or metal. Some tanks have additional features like a "reserve" function.
- Fuel pump: Consider installing a fuel pump to avoid relying solely on gravity feed, especially if you plan to use a large fuel tank. A vacuum-powered fuel pump is a cheap and easy option.
- Fuel line: Ensure you have a compatible fuel line with the appropriate diameter and length. Common fuel line sizes include 1/4", 5/16", and 3/8". The length of the fuel line can vary, but it may be advisable to use a shorter hose to prevent fuel starvation issues.
- Connectors and fittings: You will need appropriate connectors and fittings to attach the auxiliary fuel tank to the generator. This may include brass fittings, black plastic marine gas fittings, hose barbs, or quick-connect fittings.
- Hose clamps: Small hose clamps are used to secure the fuel line to the fuel tank and generator.
- Drill and drill bits: A drill is required to create holes in the fuel tank cap or other components during the installation process. Ensure you have the appropriate drill bits, and be cautious when drilling to avoid damage.
- Squeeze ball: A squeeze ball is part of the marine hose assembly and allows you to manually pump fuel from the auxiliary tank to the generator when needed.
- Ventilation and exhaust components: Proper ventilation and exhaust are crucial to prevent explosions. Boating supply companies or stores like Wal-mart carry these materials, which are designed to provide the necessary ventilation for safe fuel transfer.
- Fuel cap: You may need an extra fuel cap for your generator, especially if you are modifying the original cap for the auxiliary tank setup.
- Sealant: Silicone sealant can be used to fill any gaps or create a seal between components if needed.
It is important to note that the specific materials required may vary based on the generator model, the auxiliary fuel tank chosen, and the complexity of the setup. Always refer to manufacturer instructions or seek advice from experts before beginning any installation or modification work.
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Drilling a hole in the generator tank cap
First, it is important to gather the necessary tools and materials. For this specific task, you will need a drill, a drill bit with the appropriate size, and possibly some silicone caulk or sealant. The drill bit size should be carefully chosen to match the dimensions of the brass connector that will be inserted into the cap.
Now, let's begin the drilling process:
- Fix the drill bit into the drill: Ensure that the drill bit is securely attached to the drill.
- Drill slowly and with caution: Start drilling into the generator tank cap, being careful to maintain a slow and steady pace. Do not rush this step, as rushing may result in an uneven or inaccurate hole.
- Maintain a straight drill angle: Keep the drill straight and perpendicular to the surface of the cap throughout the drilling process. This ensures that the hole is drilled accurately and prevents any unwanted damage to the cap or the generator.
- Avoid larger drill bits: Whatever you do, refrain from using a drill bit with a greater diameter. Using a larger drill bit can compromise the integrity of the cap and may lead to issues when installing the connector.
Once the hole is drilled, you can proceed to the next step of installing the brass connector. The brass connector should fit snugly into the drilled hole. If there are any minor gaps or discrepancies in size, you can use silicone caulk to fill in the spaces and create a secure fit.
By following these steps, you will successfully drill a hole in the generator tank cap, paving the way for the addition of an auxiliary fuel tank to your generator. Remember to take your time, use the appropriate tools, and prioritize precision and safety throughout the process.
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Connecting the generator and the fuel tank
The next step is to drill a hole in the cap of the generator tank. Place the cap on a firm surface and use a wooden piece to secure it in place. Fix the drill bit in the drill and slowly begin to drill, ensuring that the drill remains straight throughout the process. It is important to use a drill bit of the correct diameter and not to rush this step.
The second brass fitting can then be placed into the cap opening. If the dimensions are correct, it should fit exactly. If there are any gaps, use a silicon caulk to fill the space. The second black plastic marine gas fitting is then placed on top of the brass fitting.
Now, take the marine ball pump and hose and connect the generator and the fuel tank, ensuring that the arrow on the pump is pointing towards the generator. It is recommended to make the connecting hose long enough to zip-tie it to the generator's frame for safety and convenience.
Finally, consider the fuel line size you need for your carburetor and get the appropriate hose and fittings. A hose with a primer bulb is required, and as long as the tank is higher, it should siphon feed adequately after priming.
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Safety considerations
Firstly, it is crucial to understand the risks associated with fuel systems. Gravity-fed systems can be dangerous in the event of a leak. Therefore, it is advisable to opt for a system with an in-built fuel pump or an auxiliary tank with a shut-off valve. This way, you can prevent fuel overflow and potential flooding.
When selecting an auxiliary tank, consider its placement in relation to the generator. It is recommended that the auxiliary tank be placed at a higher level than the generator to allow for gravity-fed fuel transfer without the risk of flooding. Additionally, ensure that the tank is securely mounted on a solid platform to prevent accidental spills or damage.
Before installation, carefully inspect the fuel line connections to ensure they are secure and leak-proof. Temperature changes can affect the integrity of these connections, so using thicker materials, such as OMC and Mercury's thicker plastic tanks, can reduce the risk of leaks. It is also advisable to install a fuel line with a primer bulb to facilitate siphon feeding.
Furthermore, adding a vacuum-powered fuel pump is a recommended safety measure. Sourcing one for a Briggs engine is a cost-effective option. During installation, include a filter and a shut-off valve in the fuel line to provide additional safety measures.
Lastly, when connecting the auxiliary tank, ensure proper ventilation and exhaust systems are in place to avoid the risk of explosion. These systems are readily available at boating supply companies or stores like Wal-mart. By following these safety considerations, you can safely add an auxiliary fuel tank to your generator, ensuring its regular operation without fuel interruptions.
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Frequently asked questions
Adding an auxiliary fuel tank to a generator can provide an uninterrupted supply of electricity by increasing the fuel-holding capacity of the generator.
Supplies required include a marine gas tank, marine gas tank fittings, brass marine fittings, a marine hose with a squeeze ball, hose clamps, a drill, a drill bit, and an optional cap for the generator.
The procedure involves drilling a hole in the cap of the generator tank, securing the brass fitting, connecting the marine ball pump and hose, and ensuring proper ventilation and exhaust to avoid fuel leakage and explosion.
