Sylvie Willis
There are several ways to pump fuel from a boat tank. One way is to use a manual pump, submerging the suction pump in the gas tank and attaching it to a hose. The other end of the hose should be placed in a container to catch the fuel. An electric pump can also be used, with a suction pump attached to a hose at one end, and the other end placed in a container. A Seachoice fuel pump, barbs, and fuel hose can also be used to make a DIY fuel-tank draining kit. If you have a battery-powered pump, you can remove the fuel hose from the engine and hook it to the pump.
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What You'll Learn
Use a manual or electric pump to drain the tank
Using a manual or electric pump is an effective way to drain the fuel tank of your boat. The process involves attaching the pump to the boat's fuel line and powering it with the boat's battery.
Firstly, you will need to disconnect the fuel hose from the engine. This can be done by loosening the clamp on the fuel pump and pulling the hose out. If your boat has a primer bulb, you can disconnect the outlet of the primer bulb from the outboard motor, as suggested by Bob Hanko, a marina operator.
Next, attach the pump to the fuel hose. If you are using a manual pump, you will need to submerge the suction pump in the gas tank and attach it to the hose, ensuring that it reaches the bottom of the tank. For an electric pump, simply attach the pump to the hose, with the suction pump submerged in the tank.
Now, you can connect the other end of the hose to your chosen receptacle. This could be a suitable container, such as a gas can, or even your tow vehicle's fuel tank, as long as it is lower than the boat's fuel tank and within the hose's range.
Finally, power the pump by attaching alligator clips to the boat's battery posts. For an electric pump, simply flip the switch to start draining the tank. Depending on the pump's capacity and the amount of fuel in the tank, the process can take less than an hour.
Remember to properly dispose of the old fuel at a hazardous waste disposal center or recycle it responsibly. Always exercise caution when handling fuel, and ensure there are no sparks or open flames nearby.
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Prepare the boat's fuel tank for the off-season
Preparing your boat's fuel tank for the off-season is a crucial step in boat maintenance. Here are some detailed instructions to ensure your boat's fuel tank is ready for the off-season:
Drain Old Fuel:
Firstly, determine whether you need to drain the old fuel from your tank. If your gas tank is almost full and the fuel has been treated with a stabilizer, you may not need to drain it. However, if the tank was left partially empty and the fuel untreated, it is advisable to drain the stale fuel.
Use a Fuel Pump:
To drain the fuel, you can use a fuel pump, either manual or electric. A manual pump is more affordable, but an electric pump is more efficient and easier to operate. Both types of pumps can be purchased as kits, which typically include a fuel hose. Ensure you have a suitable container to catch the drained fuel, placed lower than the boat's fuel tank.
Connect the Pump:
Disconnect the fuel hose from the tank at the primer bulb and connect it to the pump's inlet barb, securing it with a hose clamp. Attach a separate hose to the pump's outflow barb and place the other end of this hose into your chosen container.
Operate the Pump:
Attach alligator clips to the battery posts to power the pump. Standby as the fuel is sucked out of the boat's tank and transferred into your container. The time taken will depend on the pump's capacity and the amount of fuel remaining.
Finalize the Process:
Once the pump runs dry, disconnect the battery and reconnect the boat's fuel line to the outboard. Properly dispose of the drained fuel at a hazardous waste disposal center. Clean the hoses on your fuel pump to prevent any potential ignition from residue.
By following these steps, you will ensure your boat's fuel tank is prepared for the off-season, maintaining its longevity and performance.
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Dispose of old fuel safely
Old boat fuel can be hazardous and it is important to dispose of it safely. It is illegal to throw it out with the trash, pour it onto the soil, or dump it down a drain. It is also illegal to pour it into a storm drain, as it could end up in local waterways.
Firstly, check with your local fire department for advice on safe handling and disposal of old fuel. You can also ask your local auto or power equipment repair shop to take it off your hands, although they may charge a disposal fee.
If you have a small amount of old fuel, you can burn it off in your car or truck. You can also give it away to friends and neighbours, but it is important not to use more than a 50/50 mix of old and new fuel.
If your fuel is contaminated, or you don't trust that it's safe, you should dispose of it at a hazardous waste disposal centre or facility. Collection sites generally only accept fuel that is in a certified container, such as a jerry can or plastic gas can. You can purchase these at home centres, automotive stores, and gas stations.
When disposing of old fuel, you will need the following items:
- Glass containers
- Jerry can
- Fuel additives
- Siphon pump or turkey baster (optional)
- Funnel
- Cooler
- Cat litter, sand, or commercial absorbent
- Broom
- Dustpan
- White cloth
- Baking soda
- Household ammonia (optional)
- Dish soap
- Vinegar (optional)
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Use a fuel stabilizer to prevent engine problems
Fuel stabilizers are an essential preventive treatment for boat owners, especially if you store fuel for long periods. They are designed to stop the chemical reactions that cause instability in marine fuel. If untreated, fuel can turn stale, darken, or undergo phase separation, leading to severe engine problems.
Ethanol, which is commonly found in today's gasoline, is hygroscopic and hydrophilic, meaning it attracts and absorbs water molecules. Over time, the ethanol-water mixture separates from the gasoline, sinking to the bottom of the fuel tank and causing issues for the fuel system. This is known as phase separation, and it can cause irreversible damage to your engine. Fuel stabilizers slow down the rate of ethanol absorption, reducing the possibility of phase separation occurring in your boat's fuel tank.
Additionally, stabilizers prevent fuel degradation and protect against moisture, ensuring a seamless return to the water after long-term storage. They also neutralize free radicals in the fuel, preventing gum deposits from forming in your engine and making it easier to restart your boat after storage.
To use a fuel stabilizer, follow these steps:
- Add the fuel stabilizer to your boat's fuel tank.
- Almost completely fill up your tank with fuel, preferably ethanol-free gasoline, leaving a small space for fuel expansion during storage.
- Run your engine for 5 to 10 minutes to allow the stabilizer to reach the entire fuel system.
By taking these simple steps, you can effectively prevent engine problems and ensure a smooth start to your next boating season.
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Siphoning methods to drain the tank
To siphon fuel from your boat's tank, you will need a few basic items. These include a 12v fuel pump, a hose, alligator clips, and wire. You will also need an appropriate fuel container, such as a gas can, that is large enough to capture all of the fuel as it is being siphoned. It is important to wear basic safety gear when handling boat fuel, such as rubber gloves, goggles, and a face mask to avoid skin irritation and inhalation of fumes.
Firstly, shut off the fuel line to the outboard and run it dry. You can do this in the water or in your driveway using water muffs until the engine stalls after burning all the fuel. Make sure to treat the final tank of fuel with a stabilizer to prevent engine problems when you restart the boat.
Next, disconnect the hose from the motor and connect one end to the inlet side of the pump. Secure the line with a hose clamp. Then, attach a separate hose to the outlet side of the pump and place the other end of this hose into your fuel container. Ensure that the container is lower than the boat's fuel tank and within range of the hose.
Now, you can attach the alligator clips to the battery posts to power the pump. The fuel will then be sucked out of the boat's tank and transferred into your container. The time this process takes will depend on the amount of fuel in the tank and the power of the pump.
Alternatively, you can use a manual pump and submerge the suction pump in the gas tank. Attach the pump to the hose and ensure there is enough slack to reach the bottom of the tank. Put the other end of the hose into your fuel container and operate the manual pump until the fuel starts flowing freely.
Some boats may be equipped with anti-siphon valves, which require considerable suction to override when draining the tank. In this case, you may need to remove the fuel sender to gain access.
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Frequently asked questions
You will need a fuel pump, such as a Seachoice fuel pump, a 12v fuel pump, or a Gastapper. You will also need barbs, a fuel hose, alligator clips, and wire.
First, shut off the fuel line to the outboard. Then, disconnect the fuel hose leading from the tank at the primer bulb and place it on the pump’s inlet barb, securing it with a hose clamp. Attach a separate fuel line to the pump’s outflow barb and place the other end of the hose into a container to catch the fuel. Connect the pump to the boat’s battery and stand by as the fuel is sucked out.
You can either pump the old fuel into containers designated for fuel disposal or directly into your tow vehicle’s fuel tank where it mixes with fresh fuel. If you choose to dispose of the old fuel, search for hazardous waste disposal facilities in your area.
Using a boat fuel stabilizer can help prevent fuel degradation and protect against moisture. A stabilizer neutralizes free radicals in the fuel, preventing gum deposits and corrosion in your engine.
Always disconnect the batteries and have a fire extinguisher nearby as a precaution. It is also important to properly dispose of old fuel and clean the hoses on your fuel pump to prevent any potential ignition from residue.
