
Moeller Marine offers a Permanent Tank Fuel Installation Kit for its fuel tanks, which are designed for the recreational boating industry. The kit includes all the necessary components for installation, such as deck fill, hose clamps, a thru-hull vent, fuel fill hose, vent hose, brass hose barb, and mounting strips. Before installing a Moeller fuel tank, it is important to ensure that it is the correct type for your application and that you have the necessary hand tools, such as a tape measure, torque wrench, and a screwdriver. It is also crucial to follow safety precautions, as gasoline is extremely flammable, and power tools should be avoided around fuel vapors.
Characteristics and Values of Moeller Permanent Fuel Tank Installation
| Characteristics | Values |
|---|---|
| Fuel Tank Capacity | 19 gallons |
| Kit Contents | Fuel neck, hoses, and fittings; deck fill; stainless steel hose clamps; chrome-plated brass thru-hull vent; fuel fill and vent hoses; brass hose barb; mounting strips |
| Installation Requirements | Tape measure, torque wrench, Phillips head screwdriver, hacksaw |
| Installation Steps | Empty tank of fuel and fumes; install electric fuel sender and insert float arm; align screw holes and secure sending unit; conduct leak test; connect sender wire and ground wire |
| Precautions | Avoid using power tools; gasoline is extremely flammable |
| Life Expectancy | Should last the life of the vessel if properly installed |
| Customization | Custom fuel tanks are manufactured, but tailored towards boat manufacturers due to expense |
| Fittings | Cannot be moved or modified; no data available for modifications |
| Compliance | Complies with NMMA regulations for pressure testing at 3 PSI |
| Certifications | EPA Certificate of Conformity with the Clean Air Act of 1990 |
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What You'll Learn

Moeller's permanent fuel tank installation kit
Moeller Marine offers a permanent fuel tank installation kit for boat fuel tanks. The kit includes everything you need for a successful installation, such as a deck fill, stainless steel hose clamps, a chrome-plated brass thru-hull vent, a fuel fill hose, a vent hose, brass hose barb, and mounting strips.
The installation kit is designed to make installing a new 19-gallon fuel tank easy and convenient. It provides all the necessary components, including the fuel neck, hoses, and fittings, in one package. This eliminates the need for customers to shop around for individual parts, saving time and effort.
However, some customers have reported issues with the kit. One common complaint is that the included hoses are too short for certain boat applications. Additionally, there have been reports of incorrect sizing information, with the screw-in brass spigot for the fuel line pickup not fitting the corresponding fitting on the Moeller gas tank. These discrepancies have resulted in frustration and additional trips to hardware stores during the installation process.
Despite these drawbacks, the Moeller permanent fuel tank installation kit has received positive feedback for the quality of its parts, particularly the high-quality hose clamps that allow for a tight installation without stripping. It is recommended that if you are installing a new Moeller fuel tank, this kit will be a suitable companion, especially for deck mount applications.
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Preparing the tank for installation
Before installing a Moeller permanent fuel tank, it is important to prepare the tank and ensure you have all the necessary tools and components.
Firstly, ensure that the tank is empty of any fuel and fumes. This is a crucial safety step to prevent accidents during the installation process.
Next, gather all the required tools and components. You will need a tape measure, torque wrench, Phillips head screwdriver, and a hacksaw. It is also important to have the correct fittings, hoses, and clamps. Moeller offers a permanent tank fuel installation kit that includes many of these items, such as stainless steel clamps, a fuel hose, a chrome-plated brass thru-hull vent, and mounting strips. Check that the components in the kit are suitable for your specific application and consider purchasing additional items if needed. For example, if you are installing the tank on a deck, you may need to purchase deck mount brackets separately.
Once you have all the necessary tools and components, carefully review the installation instructions provided by Moeller. These instructions will guide you through the specific steps involved in installing the fuel tank, ensuring a safe and proper installation.
If you are installing a fuel gauge, there are additional steps to follow. Make sure to refer to the fuel gauge installation instructions provided by Moeller or a trusted source. This typically involves positioning the sending unit above the tank and aligning the screw holes between the gasket, mounting plate, and tank. It is important to avoid over-tightening the screws, as this can weaken the seal. A leak test is also recommended to ensure there are no fuel leaks.
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Installing a fuel gauge
Firstly, determine whether you are replacing an existing fuel sender or installing a new one. If replacing, remove the old unit, noting the direction of the movement of the old float arm. Position the new unit above the tank, aligning the screw hole pattern with the hole pattern in the top of the tank. Observe the direction of the float arm movement, and if it hits the tank wall, rotate the sending unit.
Next, connect the sender wire from the fuel gauge to the threaded screw terminal on the sender. Then, connect the ground wire to the 1/4" fasson terminal on the sender. Ensure the tank area is free from sparks and flames as gasoline is extremely flammable.
To ensure a no-leak installation, conduct a leak test by pressurizing the tank to 3 PSI and checking for bubbles using soapy water. Once you are sure there are no leaks, tighten the nut at the top of the sending unit to 15 inch-pounds using a torque wrench.
Finally, determine the proper float arm length by measuring the tank depth and sliding the float arm through the float arm clamp assembly until the correct length is reached, with at least 1" of arm overlap. Mark the float arm placement, cut the float arm attached to the sending unit, leaving at least 2" of arm length attached.
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Avoiding leaks
Moeller fuel tanks are designed for the recreational boating industry. The manufacturer does not recommend any modification to the tanks as it may void the warranty. The manufacturer also does not recommend moving the fittings as they are moulded into the tank during the moulding process. This ensures a leak-free connection to the fuel tank.
To avoid leaks, it is important to ensure proper ventilation of the fuel tank compartment. If you smell gas, take your boat to a qualified technician and have your fuel tank pressure tested.
If you are installing a new Moeller fuel tank, it is recommended to use a Moeller Fuel Tank Installation Kit. This kit includes all the necessary components for installation, such as the fuel neck, hoses, and fittings. However, some users have reported issues with the sizing of certain components in the kit, such as the hoses being too short and the screw-in brass spigot being the wrong size. Therefore, it is important to carefully measure and plan the installation to avoid any leaks.
Additionally, when installing the tank, follow the ABYC H-24 regulations and ensure that the vent line is open and not restricted. If the fuel tank has been replaced, check that the vent is on the correct end. Allow for the correct amount of space for the hose fill connection, with an additional 2 1/8″ (54mm) to the tank height. If you are using a 90-degree hose connection, you will need to allow for even more space.
Proper maintenance and inspections can also help to avoid leaks. Regularly check the gaskets, fuel neck, and pickup tube for any signs of wear or damage. If you suspect a leak, you can perform a pressure test on the tank to identify the source.
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Following regulations
It is important to follow the relevant regulations when installing a Moeller permanent fuel tank. The installation process should comply with the guidelines outlined by the California Air Resources Board (CARB) and the United States Environmental Protection Agency (EPA). These regulations are in place to ensure the safe and proper use of fuel tanks, reducing the impact on the environment.
For example, CARB has implemented strict emission and spill-control regulations for portable fuel containers in California, addressing the significant contribution of traditional gas cans to smog-forming pollution in the state. As such, fuel cans manufactured, sold, or supplied for use in California must adhere to specific performance standards.
Additionally, the EPA has issued certificates of conformity for Moeller's primer bulbs, fuel tanks, and fuel lines, ensuring compliance with the Clean Air Act of 1990. These certifications provide assurance that the products meet the necessary environmental standards.
When installing a Moeller fuel tank, it is essential to refer to the ABYC H-24 regulations. These regulations provide specific instructions for the installation process, ensuring the safe and secure placement of the fuel tank. It is recommended to follow the guidelines outlined in ABYC H-24 section Z for securing the fuel tank to the floor and placing components between the brackets and the fuel tank.
Furthermore, Moeller fuel tanks are designed for the recreational boating industry, and any modifications or changes made to the fittings are at the owner's risk and may void any accompanying warranties. It is crucial to carefully follow the installation instructions provided by Moeller and seek professional assistance if needed to ensure compliance with all relevant regulations and safe usage.
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Frequently asked questions
The kit includes everything you need for installation: deck fill, stainless steel hose clamps, a chrome-plated brass thru-hull vent, a fuel fill hose, a vent hose, brass hose barb, and mounting strips.
You will need a tape measure, torque wrench, Phillips-head screwdriver, and a hacksaw. It is important to avoid using power tools around fuel vapors, which are easily combustible.
If a Moeller fuel tank is properly installed, it should last the life of the vessel.











































