Replacing Fuel Filter On Stihl Fs 45: Step-By-Step Guide

The Stihl FS 45 is a line trimmer that uses a fuel filter to remove contaminants from the fuel before it enters the carburetor. Over time, the fuel filter can become dirty and need replacing. This can be done by first removing the spark plug and fuel tank cap, then using a tool to hook the fuel line and drag it upwards until the fuel filter is exposed. The old fuel filter can then be removed by pulling it off the end of the fuel line, and a new one can be attached by wiggling it into the exposed end of the line.

The fuel filter is on the end of the fuel line inside the tank

To change the fuel filter on your Stihl FS 45, you'll need to access the filter inside the fuel tank. The fuel filter is located on the end of the fuel line, which sits at the bottom of the tank.

To begin, lay your trimmer with the metal shaft pointing to the left and the engine on the right. Remove the fuel cap by twisting it counterclockwise, and siphon the fuel from the tank into a container. It's important to properly dispose of the fuel.

Now, look inside the tank for the fuel line. You may need to tilt the trimmer to move the fuel line closer to the tank opening. Using needle-nose pliers or a hooking tool, pull the fuel line and the attached fuel filter out of the tank.

With the fuel line in one hand, use your other hand to pull the gas filter off the end of the line. Then, take a new fuel filter and push it onto the end of the fuel line. Ensure the filter is securely attached by pushing it until the end of the fuel line is flush with the top of the new filter.

Finally, push the new fuel filter back into the tank, making sure it rests at the bottom. Refill the tank with your fuel/oil mixture, and you're done!

You can remove the fuel cap and tilt the engine to access the filter

To access the fuel filter on your Stihl FS 45, you can start by removing the fuel cap. Twist the fuel cap counterclockwise and take it off the fuel tank.

With the fuel cap removed, you can now tilt the engine to move the fuel line closer to the tank opening. This will make it easier to grab the line with a tool, such as needle-nose pliers or a hooking tool.

It's important to note that the fuel filter is located inside the fuel tank at the end of the fuel line. By tilting the engine, you bring the fuel filter closer to the opening, making it more accessible for removal or installation.

Once you have accessed the fuel filter by tilting the engine and exposing the fuel line, you can proceed with the next steps of replacing the fuel filter.

You may need to remove the tank and pull out the grommet that the fuel line passes through

When it comes to changing the fuel filter on your Stihl FS 45, there may be instances where you need to remove the tank and extract the grommet that the fuel line passes through. This is because the fuel filter is located inside the fuel tank at the end of the incoming fuel line.

To begin, locate the spark plug and spark plug wire boot at the top rear of the trimmer engine housing. Remove the spark plug wire boot by pulling it off the spark plug, and then carefully bend the wire to the side to prevent accidental contact with the spark plug.

Next, you'll need to access the fuel tank. Twist the fuel cap counterclockwise to remove it. Before proceeding, it is important to siphon the fuel from the tank into a suitable container for proper disposal.

Now, here's where removing the tank and the grommet comes into play. Look inside the fuel tank, and you'll notice the fuel line lying at the bottom. The fuel filter is attached to the end of this fuel line. In some cases, you might be able to reach it by simply tilting the engine. However, if that doesn't provide enough access, you'll need to remove the tank.

Removing the tank and the grommet can be a delicate process, as they tend to break easily. You'll need to carefully pull out the grommet that the fuel line passes through. Using a tool with a hooking mechanism can be helpful for this step. Gently hook the fuel line and guide it upwards until you can access the fuel filter at the opening of the fuel tank.

Once you have a good grip on the fuel filter, carefully pull it off the end of the fuel line. Now you're ready to install the new fuel filter.

Use a hook with a screwdriver or a bent coat hanger to fish out the filter

To change the fuel filter on your Stihl FS 45, you'll need to access the filter by removing the fuel cap and pulling out the fuel line. This can be a tricky process, but using a hook with a screwdriver or a bent coat hanger can make it easier to fish out the filter.

Here's a step-by-step guide on how to do it:

First, lay your trimmer in front of you with the metal shaft pointing to the left and the engine on the right. This positioning will make it easier to access the necessary parts. Next, remove the fuel cap by twisting it counterclockwise. With the fuel cap removed, look inside the fuel tank. You should see the fuel line laying at the bottom. This is where the fuel filter is attached.

Now, here comes the tricky part. Take your hook tool (either the screwdriver or bent coat hanger) and carefully insert it into the fuel tank. Gently hook the end of the fuel line and pull it upwards until the fuel filter is exposed at the opening of the fuel tank. It may take a bit of maneuvering to get the right angle and position, but with patience and care, you can do it without damaging any components.

Once the fuel filter is exposed and accessible, you're almost there. Hold the fuel line in one hand and use your other hand to grasp the fuel filter. Gently pull them apart, separating the old fuel filter from the fuel line. Now, you can attach the new fuel filter by gently wriggling its tip into the exposed end of the fuel line. Push the new filter firmly into place until the end of the fuel line is flush with the top of the gas filter.

Finally, carefully push the fuel line and new filter back into the tank, ensuring they are securely positioned at the bottom. Reattach the fuel cap, and you're done! You've successfully changed the fuel filter on your Stihl FS 45.

You can purchase replacement filters from Stihl authorised dealers and home improvement centres

To change the fuel filter on your Stihl FS 45, you'll first need to locate it. According to a user on the My Tractor Forum, the filter is situated at the end of the fuel line inside the tank. They suggest removing the fuel cap and tilting the engine to access the filter, but note that you may need to remove the tank entirely and pull out the grommet that the fuel line passes through.

When replacing the fuel filter, you may also want to consider replacing the fuel line and tank grommet, as these can break upon removal.

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