Regan Brown
Installing a fuel line for a kicker boat motor is a manageable task for boat owners with some mechanical experience. It is important to ensure that the kicker is securely mounted and connected to the fuel system. The process involves cutting the fuel line running to the main motor and installing a T or Tee to connect the fuel line to the kicker motor. A primer bulb and a fuel/water separator with two outlets are also recommended to ensure the proper functioning of the fuel line.
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What You'll Learn
Using a T-fitting to connect the fuel line to the main tank
When installing a fuel line for a kicker boat motor, you can use a T-fitting to connect the fuel line to the main tank. This method is popular among boat owners as it eliminates the need to carry a separate fuel tank for the kicker motor.
To do this, you will need a T-fitting, typically made of brass, and some additional components such as clamps and fuel lines. The T-fitting acts as a junction, allowing fuel to flow from the main tank to both the main motor and the kicker motor. This setup ensures that both engines draw fuel from the same source, simplifying the refuelling process and providing a more efficient fuel system.
The process involves connecting one end of the T-fitting to the fuel line coming from the main tank. The other two ends of the T-fitting will then connect to the fuel lines leading to the main motor and the kicker motor, respectively. It is important to ensure that the T-fitting is securely attached to the fuel lines to prevent leaks and ensure proper fuel flow.
Some boat owners have shared their experiences with using a T-fitting. One user shared that they T'd their 6 hp Nissan 4-stroke engine into a 50 hp Johnson oil-injected 50 hp setup, which worked well initially but later encountered issues with the bulb shutting close during hotter months. Another user with twin Merc 150s engines mentioned that they have two RACOR fuel/water separators, each with an in and out port, allowing for fuel lines to the main motor and kicker.
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Installing a fuel/water separator
Choose the Right Fuel/Water Separator:
Know your fuel system requirements and select a separator suitable for your marine application. For outboard fuel water separators, choose a filter with a clear plastic collection bowl. For inboards, use a filter with an aluminum bowl for gas or a clear glass/plastic inspection bowl for diesel.
Determine the Installation Location:
Decide on a location to install the fuel/water separator. It should be installed vertically, above the bilge water, between the tank and engine (or primer bulb for outboards). Ensure the hoses can reach the engine and tank without kinking or making sharp turns.
Mark and Drill Mounting Holes:
Use a marking tool to mark the installation points. Then, use an electric drill to create holes for mounting the fuel/water separator. Remember to take the necessary safety precautions to prevent spilled fuel or fires. Ensure the engine is off and cool, and have fire suppression equipment nearby.
Mount the Separator:
Line up the holes on the die-cast cap or mounting bracket with the drilled holes. Secure the separator in place using bolts or screws, depending on your preferred fixing method.
Install the Hoses:
Install barb fittings into the die-cast cap filter housing, applying thread sealant to the fitting threads. Double clamp the hoses to the fuel filter's ports, being careful not to pinch the hoses. Attach the hose from the tank to the "in" port and from the engine to the "out" port.
Additional Steps:
Apply sealant or epoxy glue when installing the fuel filter's fittings and the mounting plate (if required). Smear motor oil on the gaskets or O-rings for the element and the inspection bowl. Remember to place a fuel collection container under the separator to catch any discharged fuel when cutting the fuel line.
By following these steps, you can ensure that your boat's fuel system is protected from water and contaminants, leading to a smoother and more reliable engine performance.
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Connecting the fuel line to the motor
Firstly, determine the fuel system setup that you will be using. Refer to your boat's manual for specific guidelines. If your boat has a fuel-water separator, it will have two outlets, one for the kicker motor and one for the main motor. In this case, you can simply cut the fuel line running to your main motor and insert a brass T-fitting, also known as a Tee. Then, run separate fuel lines from the T-fitting to each of the two motors. This setup ensures that each motor's fuel system is isolated and can be controlled independently.
If your boat does not have a fuel-water separator, you may need to install one. This can be done by adding a T-fitting and an aftermarket separator in the fuel line after the main fuel tank. This will allow you to run one fuel line to the separator and then separate lines to the kicker and main motors. It is recommended to have a primer bulb for each motor, placed between the motor and the T-fitting. This helps to prevent air from being sucked into the fuel line and causing damage to the motor.
When installing the fuel lines, ensure that you follow the correct routing and connections as specified in your boat's manual. The fuel lines should be securely connected to the respective fuel inlets on the motors, with no leaks or obstructions. It is important to use the correct type and size of fuel lines, as well as any necessary clamps or fittings, to ensure a safe and proper installation.
Additionally, consider the use of a fuel shut-off valve in your fuel line setup. A shut-off valve allows you to isolate the fuel supply to each motor, providing added control and safety. This is especially important if you are switching between the kicker and main engine frequently. The shut-off valve can be positioned near the fuel tank or at another accessible location, allowing for easy operation.
Finally, once the fuel lines are connected, be sure to check for any leaks or issues before starting the engine. Refer to your kicker motor's manual for specific guidelines on testing and operating the engine after the fuel line installation. This may include priming the fuel system, bleeding air from the fuel lines, or other necessary steps to ensure the proper functioning of the fuel system.
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Using a 3-way valve to isolate the kicker motor
Installing a fuel line for a kicker boat motor is a straightforward process, but it's important to ensure that the kicker is securely mounted and powered. Here's how you can use a 3-way valve to isolate the kicker motor:
Firstly, it's important to understand the basic setup of the fuel system. The fuel line typically runs from the fuel tank to a fuel shut-off valve, which allows you to control the flow of fuel. From the shut-off valve, the fuel line continues to a fuel filter or water separator, which ensures that any contaminants or water are removed from the fuel before it reaches the engine. After the filter, the fuel line splits, with one line going to the main engine and the other to the kicker motor.
Now, to isolate the kicker motor using a 3-way valve, you would install the valve at the point where the fuel line splits to the two engines. The 3-way valve acts as a selector, allowing you to choose which engine receives fuel. When the valve is in the "on" position for the main engine, the fuel flows only to the main engine, isolating the kicker motor. Similarly, when the valve is in the "on" position for the kicker motor, the fuel flows only to the kicker, isolating the main engine. This setup ensures that the fuel systems of the two engines are completely independent, which can be important for safety and fuel efficiency.
There are a few things to consider when installing a 3-way valve. Firstly, make sure that the valve is compatible with your fuel line and engine setup. It should be the correct size and made of suitable materials for your specific application. Additionally, it's important to consider the positioning of the valve. It should be easily accessible for operation and maintenance but also protected from any potential damage or interference.
By using a 3-way valve to isolate the kicker motor, you gain several benefits. Firstly, it allows you to independently control the fuel flow to each engine, which can be useful when performing maintenance or troubleshooting. Secondly, it helps to ensure that the main engine does not siphon fuel from the kicker motor when it is not in use, preventing fuel-related issues. Finally, it provides added safety by allowing you to completely shut off fuel to one engine if needed, without affecting the operation of the other engine.
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Adding a second fuel filter
Installing a fuel line for a kicker boat motor is a straightforward process, but it's important to follow the necessary steps to ensure it is secure and safe. Before beginning, refer to your boat motor's manual for specific guidelines.
Now, if you're looking to add a second fuel filter to your boat's fuel system, here's a detailed guide:
Firstly, understand the importance of a second fuel filter. Adding a "pre-filter" or a "primary filter" acts as the first line of defence against water and debris, reducing the contaminants that could reach the engine and the stock fuel filter. This is especially beneficial for EFI and DFI engines, which are more susceptible to fuel quality issues and require vigilant maintenance of the boat's fuel system.
Next, choose an appropriate filter. Racor and Moeller are two reputable brands that offer water-separating fuel filters with clear-sight bowls, allowing you to monitor the accumulation of water in the filter. Consider a 10-micron filter as your primary filter, which can effectively capture water and debris, while a 2-micron filter acts as the secondary filter.
When installing the second fuel filter, begin by securing the filter housing. The best place to secure it is on a bulkhead that allows access to both sides. This way, you can through-bolt the housing to prevent it from vibrating loose. Coat the drilled holes with epoxy resin to protect the wood. Use stainless hardware with large flat washers and Nylock nuts to secure the housing in place.
Now, install the fittings and the filter. Coat the filter gasket with oil before installing it, then spin and hand-tighten it. Install the NPT hose fittings into the filter head, using thread sealer instead of sealing tape to avoid debris in the system. Coating the screws with silicone sealant will help prevent corrosion.
Finally, connect the fuel hoses. Push the fuel hoses onto the "in" and "out" filter ports, ensuring you don't mix up the hose routing. Most brands have arrows cast into the ports for guidance. Secure the hoses with quality stainless-steel hose clamps, turning the screws until the rubber just begins to swell on either side of the clamps.
By following these steps, you can effectively add a second fuel filter to your boat's fuel system, enhancing the filtration and protection of your engine.
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