Replacing Stihl Fuel Lines: Step-By-Step Guide

The fuel lines on a Stihl FS T6 RC engine need to be replaced almost every season due to fuel impurities. The engine may experience common problems such as clogged or dirty fuel lines. To replace the fuel lines, first, open the fuel tank cap and drain the old fuel into an approved container. Next, pull the fuel filter upward using a metal hook and remove it from the suction hose. Then, remove the air filter cover and unhook the air filter. Take out the mounting screws holding the air filter box and remove the choke cover plate. Unhook the throttle cable from the choke cover plate. Following this, pull the fuel return hose off the stub and pull the fuel suction hose out of its seat. Cut off two 6-inch lengths of fuel tubing and slice a 45-degree taper into one end of each line. Insert a metal wire into the suction hose and push it through the main fuel hole. After withdrawing the wire, coat the grommet on the new suction hose with Stihl press fluid. Push the suction hose down and coat the stub and end of the return hose with the press fluid. Push the return hose until it stops and coat the other end of both hoses with the fluid. Connect the suction hose to the intake valve and the return hose to the outtake valve. Make sure both hoses are secure. Pull the main fuel line up into the tank opening and push the new fuel filter's nozzle into the suction hose. Finally, refit the gas cap, air filter box, air filter, and filter cover.

Drain old fuel into an approved container

To drain the old fuel from your STIHL FS T6 RC trimmer into an approved container, first, open the fuel tank cap. Ensure you have an approved fuel container ready to collect the old fuel. You can then begin to drain the old fuel from the tank.

Use a metal hook to pull the fuel filter at the bottom of the tank upwards and then remove it from the end of the suction hose. This will allow you to drain the fuel from the tank into your approved container. Be careful not to spill any fuel and ensure you are wearing appropriate protective gear, such as gloves and eye protection.

Once you have finished draining the fuel, you can dispose of it safely and correctly. It is important to never pour old fuel down the drain or into the ground, as this can be dangerous and harmful to the environment. Check with your local waste management guidelines for the proper disposal method.

Now that the old fuel has been drained, you can continue with the next steps of replacing the fuel line.

Remove the fuel filter

To remove the fuel filter from your Stihl FS T6 RC, you'll need to open the fuel tank cap and drain all the old fuel into an approved fuel container. This is an important safety step, ensuring that no fuel spills out during the rest of the process. Once the tank is empty, locate the fuel filter at the bottom of the tank. Using a metal hook, pull the fuel filter upwards and off the end of the suction hose. This will disconnect the fuel filter from the fuel line, allowing you to remove and replace it.

Here's a more detailed, step-by-step breakdown of the process:

First, open the fuel tank cap. It's important to do this carefully and slowly, as fuel vapors can be dangerous. Make sure you are in a well-ventilated area and take caution to avoid any open flames or sparks.

Next, drain the old fuel into an approved fuel container. This step ensures that you don't waste fuel and also prevents spills or leaks during the filter change. Place the container securely below the fuel tank and slowly pour out the old fuel.

Now, locate the fuel filter. On the Stihl FS T6 RC, it is positioned at the bottom of the fuel tank. Due to its location, you may need a small mirror or a flashlight to spot it.

Take your metal hook and carefully insert it through the fuel tank opening. Reach down and hook the fuel filter. Pull upwards on the hook to detach the fuel filter from the suction hose. You may need to wiggle the hook gently to loosen the connection before pulling it free.

Once the fuel filter is disconnected, carefully lift it out of the fuel tank. Now you can dispose of it safely and replace it with a new fuel filter.

Remember to wear appropriate protective gear, such as gloves and eye protection, during this process, and ensure that the engine is off and the equipment is thoroughly cleaned before beginning any maintenance work.

Unhook the air filter

To unhook the air filter of your Stihl FS T6 RC, you will first need to remove its cover. Once you have removed the cover, simply unhook the air filter.

• Remove the air filter cover: Before you can access the air filter, you will need to remove the cover that protects it. This will expose the air filter and allow you to proceed to the next step.
• Unhook the air filter: With the cover removed, you can now easily reach the air filter. Gently unhook it from its housing. Be careful not to damage the filter or any surrounding components.
• Remove the mounting screws: The air filter box is held in place by two mounting screws. Use the appropriate tool to remove these screws, as this will allow you to take out the box and access the filter more easily.
• Remove the choke cover plate: On top of the carburetor, you will find the choke cover plate. Remove this to further expose the area and provide better access for the next step.
• Unhook the throttle cable: The throttle cable will be connected to the choke cover plate. Carefully unhook it, being mindful not to damage any components or surrounding cables.

By following these steps, you will have successfully unhooked the air filter and can proceed with other maintenance or repair tasks on your Stihl FS T6 RC equipment. Remember to refer to the manufacturer's instructions or a qualified technician for more complex procedures.

Remove the choke cover plate

To remove the choke cover plate on your Stihl FS T6 RC, you'll need to follow these steps:

First, open the fuel tank cap and drain all the old fuel into an approved fuel container. This is an important safety step to prevent any spills or accidents. Next, you'll need a metal hook. Use this to pull the fuel filter at the bottom of the tank upward and then pull it off the end of the suction hose. Now, remove the air filter cover and unhook the air filter. With the air filter removed, you can access the mounting screws holding the air filter box in place. Remove these screws and take off the choke cover plate on top of the carburetor.

Here's a more detailed breakdown of the process:

Locate the choke cover plate on top of the carburetor. It should be visible once you've removed the air filter and its cover. Using a screwdriver or appropriate tool, carefully unscrew or unhook the choke cover plate. Be gentle to avoid stripping the screws or damaging any nearby components. Once the choke cover plate is loose, lift it off the carburetor. Set it aside in a safe place, making sure not to misplace it, as you'll need to put it back during reassembly. With the choke cover plate removed, you'll have access to the throttle cable.

By following these steps, you'll be able to safely and effectively remove the choke cover plate, allowing you to access other components for repair, maintenance, or replacement. Remember to work in a well-ventilated area and wear appropriate protective gear when handling fuel and machinery.

Pull the fuel return hose off the stub

To pull the fuel return hose off the stub, begin by locating the stub. It should be next to the spacer flange. Then, using your fingers, pull the fuel return hose off the stub. Be sure to use your fingers and not a metal hook or any other tool, as this could damage the hose or stub.

Once the fuel return hose is removed, you will need to pull the fuel suction hose out of its seat on the carburetor. This can be done with your fingers or a metal hook. Again, be careful not to damage the hose or carburetor. With the fuel suction hose removed, you can now throw away the old fuel lines.

At this point, you will need to prepare the new fuel lines. Cut off two lengths of fuel tubing, each about 6 inches long. Then, slice a 45-degree taper into one end of each line. Unbend the hook in the metal wire and insert it into the suction hose. This will help guide the new hose through the fuel tank.

Now that the new fuel lines are ready, you can begin the installation process. Push the hook and suction hose through the main fuel hole in the fuel tank. Once the suction hose is in place, withdraw the metal wire and discard it. You should now have the new fuel lines installed and can continue with the rest of the fuel line replacement process.

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