
Cleaning a plastic fuel tank on an ATV is not a pleasant task, but it is necessary to maintain the vehicle's performance. The process involves removing the tank, draining old fuel, and eliminating any dirt, debris, or residue. This can be achieved through various methods, such as using fresh gas, hot soapy water, or even kerosene. Some people recommend using a garden hose to flush out the tank and compressed air to dry it thoroughly. Others suggest utilising chain links or nuts to dislodge stubborn buildup. While it may be a tedious job, keeping the fuel tank clean ensures the ATV runs smoothly and prevents the need for costly repairs down the line.
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What You'll Learn

Use fresh fuel and change the inline filter regularly
Using fresh fuel and regularly changing the inline filter are essential for maintaining the performance and longevity of your ATV. Here's why:
Fresh Fuel
Fresh fuel is vital to ensure the optimal performance of your ATV. Over time, fuel can degrade and become contaminated, leading to issues such as clogged filters and poor engine performance. By using fresh fuel, you can prevent these problems and keep your ATV running smoothly.
Regular Filter Changes
Regularly changing the inline fuel filter is crucial for several reasons. First, the filter catches contaminants, such as dirt and debris, that may be present in the fuel. Over time, the filter can become clogged, restricting fuel flow and potentially leading to engine problems. Regularly changing the filter ensures optimal fuel flow and engine performance.
Additionally, inline fuel filters are relatively inexpensive, making them a cost-effective way to protect your ATV's engine. By changing the filter regularly, you can avoid the hassle and expense of dealing with major engine issues down the line.
Moreover, changing the inline filter can be a simple and quick process, especially with readily available replacement filters from auto parts stores or lawnmower shops. This accessibility makes it convenient to perform regular maintenance and keep your ATV in top condition.
In conclusion, using fresh fuel and regularly changing the inline filter are critical steps in maintaining your ATV. By prioritising these tasks, you can ensure the long-term reliability and performance of your vehicle.
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Remove the tank and flush with water
Removing the tank and flushing it with water is a good method for cleaning your ATV's plastic fuel tank. This method is particularly useful if you are dealing with a large amount of dirt, sand, or water in the tank.
First, you'll need to remove the fuel tank. This typically involves removing bolts, straps, and the fuel line, then pulling the tank backwards and upwards to remove it. Make sure to also remove the petcock and filter, and clean them thoroughly separately.
Once the tank is removed, you can begin the flushing process. One method is to use a garden hose to flush out the sand or dirt. You can then blow the tank dry with compressed air. If you are dealing with water in the tank, you may need to use an absorbent or air to evaporate the water, or dilute it with a large quantity of alcohol before draining.
For a more thorough cleaning, you can use hot water and soap, preferably from a high-pressure washer. You can also add a chunk of chain or several large nuts to the water and soap solution to help scrub the tank. After flushing, be sure to dry the tank thoroughly before reinstalling it.
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Use soap and hot water to clean the tank
To clean a plastic fuel tank on an ATV, a simple and effective method is to use soap and hot water. This is a good way to get rid of any "gross stuff" in the tank. First, remove the tank from the ATV. You can do this by removing the two bolts, straps, and the fuel line, then pulling the tank backwards and upwards. Next, remove the petcock and filter, and reinstall the petcock. Now, you can start cleaning the tank.
Add some soap and hot water to the tank, and shake vigorously. You can also use a high-pressure washer to spray hot water and soap into the tank. Make sure to clean the petcock and filter as well. Rinse the tank with clean water to remove any soap residue, and then dry the tank thoroughly. You can use a vacuum cleaner on blow, or methyl hydrate, to ensure the tank is completely dry. It is important to let the tank dry for a few days before reinstalling it, and some recommend using a fan to speed up the drying process.
Some people recommend using a chunk of chain or several large nuts, along with the soap and hot water, to help remove any stubborn residue. You can also try using kerosene, or paint thinner, to help dissolve tough dirt and grime. However, it is important to note that these chemicals can be dangerous, and you should exercise caution when using them. Always make sure the tank is completely dry before reinstalling it and adding fresh fuel.
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Use kerosene to dissolve stubborn debris
Kerosene is a great option to dissolve stubborn debris in your ATV's plastic fuel tank. It is a powerful solvent that can help break down and remove built-up gunk, varnish, and other residues. Here's a step-by-step guide on how to use kerosene to clean your ATV's plastic fuel tank effectively:
First, remove the fuel tank from your ATV by detaching the necessary bolts, straps, and fuel lines. Make sure to drain any remaining fuel from the tank and dispose of it properly. Once the tank is empty and detached, you can begin the cleaning process.
Pour a gallon of kerosene into the fuel tank. Kerosene has a low evaporation rate, so it will remain in a liquid state for a while, allowing it to work on dissolving the debris. You can use a funnel to ensure the kerosene goes directly into the tank without spilling. After pouring in the kerosene, tightly replace the cap to prevent any evaporation or spillage.
Let the kerosene sit in the tank for at least an hour. During this time, the kerosene will start to break down and dissolve any stubborn debris, gunk, or varnish buildup. The longer you let it sit, the more effective it will be. You can work on other maintenance tasks during this waiting period.
After the kerosene has had sufficient time to work, it's now time to remove it from the tank. Detach the fuel tank cap and carefully pour out the kerosene into a suitable container for disposal. Be cautious when handling kerosene, and make sure to follow proper disposal guidelines to avoid any environmental harm.
Once the kerosene is emptied, inspect the inside of the fuel tank. Use a flashlight to check for any remaining debris or residue. If needed, use a soft cloth or a brush with stiff bristles to gently scrub away any stubborn deposits. You can also use a coat hanger with a small piece of thin rag attached to reach and wipe down tight spaces.
Finally, rinse the fuel tank with clean, fresh gasoline. Pour the gasoline into the tank, swish it around to ensure it reaches all areas, and then dump it out. Repeat this rinsing process a few times to ensure that all traces of kerosene and dissolved debris are removed from the tank. Allow the tank to dry completely before reinstalling it and adding new fuel.
By following these steps and using kerosene, you can effectively dissolve and remove stubborn debris from your ATV's plastic fuel tank, ensuring a clean and efficient fuel system for your vehicle.
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Clean the petcock and fuel line
To clean the petcock and fuel line on an ATV, you will first need to remove the fuel tank. This can be done by removing the two bolts, straps, and fuel line, and then pulling the tank backwards and upwards.
Once the tank is removed, you can access the petcock. Remove the petcock by taking off the filter from the top of it. You can then clean the petcock thoroughly, making sure to pay attention to the screen and the O-ring. If the O-ring is damaged or leaking, it may need to be replaced.
After cleaning the petcock, you can put it back together and reinstall it onto the fuel tank. It is recommended to also clean the fuel line at this point. One method is to use a hose to blow out the fuel line with compressed air. Another approach is to use a new gas line and drill out one end to fit the petcock, then blow it out with an air hose.
Finally, reinstall the fuel tank by reversing the steps you took to remove it. Make sure to add fresh gas and run the ATV to check that the petcock and fuel line are functioning properly.
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Frequently asked questions
First, remove the fuel tank. Then, flush it with a garden hose until all the dirt is flushed out. Blow it out with compressed air until it's dry.
Clean the screen on the petcock and put it back together.
You can use kerosene, acetone, naphtha, or fresh gas.
Use hot water and dish soap, then either a vacuum cleaner on blow or methyl hydrate to dry it.
Use a dry brake adaptor or quick-fill device. Adding a fuel filter under the gas cap is also recommended.











































