Replacing Fuel Filter In Stihl Ms250: Step-By-Step Guide

If your Stihl MS250 chainsaw is stalling or having trouble starting, the fuel filter may be clogged and need replacing. Stihl places the filter in the gas tank, so you'll need to remove the fuel tank cap to access it. Before you begin, set the chainsaw on a level surface and disconnect the spark plug boot to prevent accidental start-up. Next, remove the gas cap by lifting the locking lever to the vertical position and turning the cap counterclockwise. If the tank still contains gas, siphon it into a container. Then, use a 12-inch piece of 12- or 14-gauge wire to form a hook and reach into the tank to hook and pull out the filter. Hold the fuel line with one hand while you work the filter off, then push the new filter onto the fuel line and let it fall back into the tank. Finally, fill the tank and replace the fuel cap.

Prepare your workspace

To prepare your workspace for changing the fuel filter on a Stihl MS250 chainsaw, you should:

Set up your workspace in a well-ventilated area, preferably outdoors, to avoid inhaling any fuel fumes. Place a tarp or drop cloth on the ground to protect the surface and catch any spilled fuel. Ensure you have adequate lighting if working in a dimly lit area.

Gather all the necessary tools and parts, including a new fuel filter, a piece of wire (12-14 gauge, about 12 inches long), a flat-head screwdriver, a flashlight, and a container to hold any fuel that needs to be drained from the tank. Keep paper towels or rags nearby to wipe up any spills.

Wear protective gear, such as safety goggles and gloves, to protect your eyes and hands from fuel and debris. Ensure the chainsaw is turned off and cooled down before beginning any maintenance work.

Place the chainsaw on a level surface to ensure it remains stable during the fuel filter replacement process. Remove the spark plug boot to prevent accidental startups, enhancing safety during the procedure.

If the fuel tank is not already empty, drain the remaining fuel into the container. Siphoning can be used to remove the fuel without spilling. Ensure the fuel is handled and disposed of properly, following local regulations and guidelines.

Once the fuel is drained, you are ready to begin the process of changing the fuel filter.

Remove the fuel tank cap

To remove the fuel tank cap from your Stihl MS250 chainsaw, first set the chainsaw on a level surface and pull off the spark plug boot to prevent an accidental start-up.

The fuel tank cap is located on the right-hand side of the recoil. To remove it, lift the locking lever to the vertical position and turn the cap counterclockwise. If the cap is connected to a plastic strap that is anchored to the tank, let the cap hang freely. Otherwise, set it aside.

If the tank still has gas inside, siphon it into a container with a hand siphon. It is best to perform this procedure just before the saw runs out of fuel.

Maneuver the plastic piece inside the fuel tank

To manoeuvre the plastic piece inside the fuel tank of your Stihl MS250 chainsaw, you will first need to remove the fuel tank cap. The cap is located on the right-hand side of the recoil. Once the cap is removed, you can access the plastic piece inside the tank.

The plastic piece inside the fuel tank is likely referring to the fuel filter, which is attached to the fuel line. To manoeuvre the fuel filter, you will need to use a tool to hook it and pull it out. Here are detailed instructions:

Take a 12-inch piece of 12- or 14-gauge wire and form one end into a hook shape. Strip the insulation off the wire to avoid contaminating the fuel tank. Reach into the tank with the wire and carefully hook it around the fuel filter. Pull the filter towards the cap opening until you can grasp it firmly.

Now, hold the fuel line securely with one hand and use a flat-head screwdriver to detach the filter. Be careful not to let the fuel line fall back into the tank, as it may be difficult to retrieve without the filter attached. With the old filter removed, you can now attach the new fuel filter to the end of the fuel line. Ensure that it is securely attached and pushed into the line until the rubber base of the filter is touching the line.

Once the new filter is in place, you can let it fall back into the tank. Finally, replace the fuel tank cap, ensuring that it clicks into place securely.

Remove the fuel filter

To remove the fuel filter from your Stihl MS250 chainsaw, you'll need to first set the chainsaw on a level surface and disconnect the spark plug boot to prevent accidental start-up. Remove the gas cap by lifting the locking lever to the vertical position and turning the cap counterclockwise. If the tank still has gas inside, siphon it into a container with a hand siphon.

Next, take a 12-inch piece of 12- or 14-gauge wire and form one end into a hook. Strip off the insulation to avoid contaminating the gas tank. Reach into the tank with the wire, hook it around the filter, and pull the filter out. You may need a flashlight to help you see inside the tank.

Once you have a good grip on the filter with the hook, hold the fuel line firmly with one hand and work the filter off using a flat-head screwdriver. Be careful not to let the fuel line fall back into the tank after removing the filter, as it will be difficult to retrieve.

Now that the old filter is removed, you can install a new one.

Attach the new fuel filter

To attach the new fuel filter to your Stihl MS250 chainsaw, follow these steps:

Firstly, ensure that the fuel line is still held firmly in one hand. You should have removed the old fuel filter by working it off the fuel line with a flat-head screwdriver. Now, take the new fuel filter and push it onto the end of the fuel line. Work it onto the line until the rubber is touching the base of the filter.

It is important to ensure that the fuel filter is securely attached to the fuel line. Once you are satisfied with the connection, you can let the filter fall back into the tank.

Next, fill the tank with fuel and replace the fuel cap. Make sure the cap is closed properly by checking that the locking lever is flush with the top of the cap. If the cap is not closed properly, you may experience fuel spillage while operating the chainsaw.

Finally, ensure that the spark plug boot is pulled off to prevent accidental startup during the process. Now, your Stihl MS250 chainsaw is ready to be used again!

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