
If you're having trouble with your Ryobi trimmer, it could be time to replace the fuel filter. This is a relatively simple process that requires no prior experience in small engine repair. The fuel filter ensures that debris does not enter the fuel system of the engine, so it's important to replace it either after 25 hours of run time or each year. You can do this by removing the fuel tank cap and rotating the trimmer upside down until the fuel filter falls out. Then, insert the new fuel line into the fuel tank and thread the tapered end of the line through the mounting hole in the bottom of the tank.
| Characteristics | Values |
|---|---|
| When to replace the fuel filter | After 25 hours of run time or each year |
| Tools required | Small screwdriver, wire cutters, two-cycle engine oil, large screwdriver |
| Steps | 1. Remove the fuel tank cap. 2. Rotate the trimmer upside-down until the fuel filter falls from the fuel tank. 3. Install the new fuel filter. 4. Cut a taper at the end of the new fuel line. 5. Lubricate the outside of the new fuel line. 6. Insert the new fuel line into the fuel tank. 7. Thread the tapered end of the line through the mounting hole in the bottom of the tank. 8. Pull the fuel line through the opening until the fuel filter nipple is partially seated in the mounting hole. 9. Press down on the centre (plastic) portion of the fuel filter while pulling firmly and steadily on the fuel line. |
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What You'll Learn

Removing the old fuel filter
To remove the old fuel filter from your Ryobi trimmer, you'll need to first remove the fuel tank cap and rotate the trimmer upside down. Once you've done this, the old fuel filter should fall out of the fuel tank. You can then follow the fuel line to the carburettor and pull the line off the carburettor port. Grab the line under the fuel filter and pull it through the tank and away from the trimmer. Open the fuel tank and pour any remaining fuel into a fuel container. You should then locate the return fuel line that connects from the right side of the primer bulb to the fuel tank. Pull the line away from the primer bulb and then away from the fuel tank.
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Preparing the new fuel line
To prepare the new fuel line, you will need to cut a taper at the end of the new fuel line with wire cutters. This will allow the line to pass through the mounting hole more smoothly. Lubricate the outside of the new fuel line with two-cycle engine oil, which will also help the line to pass through the mounting hole more smoothly.
Next, slide the fuel filter over the tank end of the fuel line. Do not set the fuel filter in the tank yet. Pull the other end of the fuel line with your fingers and push it over the carburetor port. Insert the new fuel line into the fuel tank and thread the tapered end of the line through the mounting hole in the bottom of the tank. Pull the fuel line through the opening until the fuel filter nipple is partially seated in the mounting hole.
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Inserting the new fuel line
To insert the new fuel line, you will need to use wire cutters to cut a taper at the end of the new fuel line. This will allow the line to pass through the mounting hole more smoothly. Lubricate the outside of the new fuel line with two-cycle engine oil. This will also help the line to pass through the mounting hole more smoothly.
Slide the fuel filter over the tank end of the fuel line, but do not set the fuel filter in the tank yet. Pull the other end of the fuel line with your fingers, and push it over the carburetor port. Insert the new fuel line into the fuel tank and thread the tapered end of the line through the mounting hole in the bottom of the tank. Pull the fuel line through the opening until the fuel filter nipple is partially seated in the mounting hole.
Use a large screwdriver to press down on the centre (plastic) portion of the fuel filter while pulling firmly and steadily on the fuel line (from the bottom). Shake the tank back and forth until the line lays in the bottom of the fuel tank.
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Positioning the new fuel filter
To position the new fuel filter, slide the fuel filter over the tank end of the fuel line. Do not set the fuel filter in the tank yet. Pull the other end of the fuel line with your fingers and push it over the carburettor port. Insert the fuel filter into the fuel tank. Use wire cutters to cut a taper at the end of the new fuel line, which will allow the line to pass through the mounting hole more smoothly. Lubricate the outside of the new fuel line with two-cycle engine oil, which will allow the line to pass through the mounting hole more smoothly. Pull the fuel line through the opening until the fuel filter nipple is partially seated in the mounting hole. Use a large screwdriver to press down on the centre (plastic) portion of the fuel filter while pulling firmly and steadily on the fuel line (from the bottom).
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Final checks
Once you have replaced the fuel filter, there are a few final checks to ensure that you have installed it correctly.
First, check that the new fuel filter is securely in place and seated properly in the mounting hole. You can do this by gently tugging on the fuel line to ensure it is tight and will not come loose during use.
Next, inspect the fuel line itself. Ensure that it is not kinked or twisted, as this can restrict fuel flow and affect the performance of your trimmer.
Also, check for any leaks. After refuelling, start the trimmer and observe the area around the fuel tank and filter for any signs of leakage. If there are no leaks, you can be confident that the new fuel filter is doing its job of keeping the fuel system debris-free and maintaining the proper fuel-to-oil ratio.
Finally, test the trimmer to ensure it is running smoothly. If you notice any issues such as difficulty starting, uneven performance, or excessive smoke, it could indicate a problem with the fuel system, and you may need to re-check your work.
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Frequently asked questions
The fuel filter on your Ryobi trimmer should be replaced every 25 hours of run time or each year.
The filter ensures that debris does not enter the fuel system of the engine, thus maintaining the proper performance of your trimmer. You may also need to replace the fuel filter if you have not been using the proper fuel to oil ratio in the fuel mixture.
With the fuel tank cap removed, rotate the trimmer upside-down until the fuel filter falls from the fuel tank.
Lubricate the outside of the new fuel line with two-cycle engine oil. Slide the fuel filter over the tank end of the fuel line, but do not set the fuel filter in the tank yet. Pull the other end of the fuel line with your fingers, and push it over the carburetor port. Insert the fuel filter into the fuel tank, and shake the tank back and forth until the line lays in the bottom of the fuel tank.
You will need a small screwdriver, wire cutters, and two-cycle engine oil.











































