Sylvie Willis
Cleaning a chainsaw fuel tank is a straightforward process that can be done at home. It is important to clean your chainsaw fuel tank regularly to ensure optimal performance and prevent damage. The first step is to empty the fuel tank by turning the chainsaw over and letting the fuel flow out. Next, a fuel injector cleaner additive can be poured into the tank and left to soak. After this, the tank can be shaken vigorously to remove any remaining residue. Finally, the tank should be rinsed with clean gasoline and flushed with a solvent to ensure that it is completely clean.
Chainsaw Fuel Tank Cleaning Characteristics and Values
| Characteristics | Values |
|---|---|
| Fuel | Non-ethanol gas, Stihl premix gas, fresh fuel |
| Fuel Stabilizer | Yes |
| Fuel Additive | Fuel injector cleaner |
| Tools | Spark plug, wire brush, small wooden dowel, nuts, bolts, washers, steel hardware with a magnet, BBs |
| Cleaning Method | Shake the tank, scrub with an abrasive, rinse with gasoline, flush with solvent, blow out with air |
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What You'll Learn
Use a fuel stabilizer and cleaner
Fuel stabilizers are a great way to keep your chainsaw's fuel tank clean and well-maintained. They are designed to improve the shelf life of the fuel mixture and prevent oxidation and evaporation. This is especially important for chainsaws, as they have small fuel tanks and their fuel degrades faster due to the addition of oil.
When using a fuel stabilizer, it is recommended to follow certain guidelines for optimal results. Firstly, always use a fresh can of oil when preparing your chainsaw fuel. Oil tends to lose viscosity over time, and fresh oil ensures the proper lubrication of your chainsaw's motor. It is also crucial to get the proportion of oil and gas correct, especially for chainsaws with small tanks.
There are several options available when it comes to fuel stabilizers. You can choose from various manufacturers, such as Stihl and Husqvarna, which offer premixed gas and oil formulations with stabilizers. These premixed fuels are convenient and save time, as you don't need to mix your own fuel. Additionally, they last longer, with some options offering a shelf life of up to 10 years.
If you prefer a DIY approach, you can add a fuel stabilizer directly to your gas tank. Run the chainsaw for a few minutes to allow the stabilizer to dissolve any built-up fuel. This method is effective in cleaning the gas tank and preventing future buildup. It is recommended to use fuel stabilizers annually and to clean the tank immediately at the first sign of issues, such as oxidized fuel residues or varnish buildup.
By incorporating fuel stabilizers into your chainsaw maintenance routine, you can extend the lifespan of your fuel and improve the overall performance of your chainsaw. It is important to combine this with other preventative measures, such as avoiding overfilling the fuel tank and adopting smart storage habits, to minimize deposits and keep your chainsaw running smoothly.
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$57.54 $61.03
Try a fuel injector cleaner additive
If your chainsaw's fuel tank is dirty, you might want to try a fuel injector cleaner additive. This method is less expensive than other options and can be very effective at dissolving sludge and loosening debris.
To clean your chainsaw's fuel tank using a fuel injector cleaner additive, start by pouring out any old fuel from the tank. Then, pour a small amount of the additive into the tank—just enough to coat the inside of the tank. You don't need to use a whole bottle, as these products are concentrated and designed to treat a large volume of gas.
Let the additive sit and soak in the tank for a few hours or even a few days if there is a lot of built-up varnish. After soaking, shake the tank vigorously to ensure that the additive has coated all the interior surfaces. You can also add nuts, bolts, washers, or BBs to the tank before shaking to help scrape away any stubborn residue. Just be careful not to use anything that could damage the soft metal of the tank, like screws.
Finally, pour out the liquid and retrieve any metal objects you added with a magnet. Rinse the tank with clean gasoline a couple of times, and your chainsaw's fuel tank should be nice and clean!
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Clean the carburettor
To clean the carburettor of a chainsaw, you will first need to disconnect the spark plug wire to prevent accidental ignition. Then, remove the carburettor's cover and place the diaphragm, gasket, and any other parts removed during disassembly on a bench, in the order they were taken off. Next, turn the carburettor over and repeat the process for the other side.
Now, remove the small screw holding the float needle in place and carefully take out the needle, pain, and lever, placing them on the table or workbench. You can then spray the carburettor with a carburettor cleaner, ensuring that you spray through all the small passageways. Take the carburettor to a sink and wash it with hot, soapy water, then rinse it with clear water. Blow the carburettor dry with compressed air, ensuring that all small passageways are dried.
If you have access to an ultrasonic cleaner, you can fill the tank with a recommended chainsaw carburettor cleaning solution, ensuring you follow the manufacturer's instructions for concentration and temperature. Place the carburettor components into the basket, lower it into the solution, and turn on the ultrasonic cleaner for the recommended time (usually around 10 minutes). Once the cycle is complete, remove the components and rinse them with clean water. Dry them with compressed air or a clean cloth.
Finally, carefully reassemble the carburettor, following a diagram or your notes to ensure it is done correctly. Secure it back onto the engine and tighten the screws or bolts. Reconnect the spark plug wire and start the chainsaw, letting it run for a few minutes to ensure it is functioning correctly.
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Use a wooden dowel to scrape the tank
To clean a chainsaw fuel tank, one method is to use a wooden dowel to scrape the inside of the tank. This is a suggested approach when there is hardened material at the bottom of the tank, such as sawdust mixed with old evaporated gas.
Using a small wooden dowel, reach into the tank and gently scrape away any built-up residue. This process should be done carefully to avoid damaging the tank's interior. After scraping, it is recommended to rinse the tank with gasoline or a fuel injector cleaner additive.
It is important to note that some sources advise against scraping the inside of fuel tanks, as it can potentially harm the soft magnesium metal. Alternative methods for cleaning include using BBs as an abrasive, fuel injector cleaner products, or carb cleaner.
For a more intensive clean, some people suggest disassembling the carburetor and spraying the passages with a pressurized carb cleaner, ensuring that all jets and passages are clear. This method is more involved and may require additional tools and knowledge.
Overall, using a wooden dowel to scrape the chainsaw fuel tank is a viable option for removing hardened residue, but it should be done cautiously to prevent damage to the tank.
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Flush with solvent and blast with air
Flushing your chainsaw fuel tank with solvent and blasting with air is a great way to clean it. This method is especially useful if your chainsaw has been sitting for a long time with the same fuel, or if there is a build-up of sludge due to a mix of oil and gas.
First, you need to unhook the fuel line. This is important because you don't want any of the solvents or water getting into your engine. Be careful when you disconnect the fuel line as some gas and oil may leak out. Inspect the gas tank and fuel line for any damage, cracks, holes, or splitting. If there is visible damage, you may need to replace some parts.
Next, choose a suitable solvent. There are commercially available options such as Safety Kleen, carburettor cleaners, or a mix of fresh E10 with Sta-Bil and Seafoam. You can also use DIY solvents like straight alcohol, dishwashing soap, or kerosene. However, be cautious when using strong solvents on plastic tanks as they may damage the finish or soften the material. Always test on a small area first.
Once you have chosen your solvent, flush the inside of the fuel tank with it. You can do this by pouring the solvent into the tank, ensuring it covers all the interior surfaces. Shake the tank vigorously to help loosen any built-up sludge or debris. Let the solvent sit for a few hours or even a few days, depending on the severity of the build-up and the type of solvent used.
After the solvent has had time to work, blast the inside of the tank with compressed air to remove any remaining solvent and dislodged debris. You can use a portable air blaster or a bulk air tank for this step. Make sure to wear protective gear, including eye protection and gloves, when handling solvents and compressed air.
Finally, rinse the tank with clean water or a fuel tank cleaner to remove any solvent residue. Allow the tank to dry completely before reassembling the fuel line and refilling it with fresh fuel.
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Frequently asked questions
If your chainsaw has been sitting for a long time with fuel in it, you will need to clean the carb. Start by turning the idle and high screws and counting the turns. Then, scribe the turns onto the metering plate for future reference. Next, take the carb apart and spray the passages with a pressurized carb cleaner.
Try using a fuel injector cleaner additive. Pour it into the tank, add nuts, bolts, screws, and washers, put the cap on, and shake vigorously. Then, pour out the liquid and retrieve the steel hardware with a magnet. Finally, flush the tank with mixed gas.
Yes, you can try using a small wooden dowel or something similar to scrape out the hardened residue. Then, rinse the tank with gas or gasoline.
Be careful not to scrape the inside of the tank with anything sharp or abrasive, as this can damage the soft metal. Always wear safety glasses when using carb cleaner, and avoid directing high-pressure air nozzles towards your face.
It is recommended to use non-ethanol gas or a premixed fuel specifically designed for chainsaws, such as Stihl premix gas, as these fuels have a longer shelf life.
