Replacing Chainsaw Fuel Lines: A Simple Trick To Try

Chainsaw fuel lines can be a pain to replace. The fuel lines that carry fuel from the tank to the carburetor can clog, crimp, or crack over time, restricting fuel flow and preventing the engine from starting. If you're having trouble getting the lines through the holes into the fuel tank, there are a few tricks you can try. One method is to cut the end of the fuel line at a diagonal angle, which helps with insertion and allows fuel to feed into the tube more easily. You can also try lubricating the fuel lines with a drop of oil or a small amount of lubricant to aid in ease of entry. Additionally, you can try using a pair of bent needle-nose pliers or hemostats to grasp the tubing and pull it through. For fuel lines that are difficult to reach, you may need to use a tool such as a thin piece of wire attached to a key ring to thread the line through the hole.

Chainsaw fuel lines can become brittle and crack over time

When replacing fuel lines, it is essential to use the correct size and type of fuel line for your specific chainsaw model. Fuel lines that are too large or too small can leak or restrict fuel flow, leading to performance issues and safety hazards. It is also important to note that fuel lines are not fuel-proof but fuel-resistant, meaning that they will degrade over time with exposure to fuel.

There are several tricks and techniques to make replacing chainsaw fuel lines easier. One common method is to use a sharp, long point at the end of the fuel line to guide it through the holes in the fuel tank. This can be done by cutting the end of the line at an angle or to a sharp point. Another approach is to use a tool, such as a hemostat or needle-nose pliers, to grip the fuel line and guide it through the holes. To protect the fuel line from damage, some people recommend covering the tips of the tool with rubber or plastic tubing. Additionally, lubricating the fuel lines with a drop of oil can ease threading and prevent damage.

For fuel lines that are particularly difficult to access, more creative solutions may be required. One suggestion is to feed a long standard-width tie-wrap through the fuel tank and out of the gas cap hole, then attach the fuel line to the tie-wrap and use it as a "fish tape" to pull the line through the tank. Another method is to use a piece of wire, folded in half and crimped to the end of the fuel line, to guide it through the holes. In some cases, it may be necessary to drill out the holes in the fuel tank to make them larger and then seal them with a product like Permatex.

The fuel lines connect the fuel tank to the carburetor

The fuel lines on a chainsaw carry fuel from the tank to the carburetor. Over time, these fuel lines can clog, crimp, or crack, restricting fuel flow and preventing the engine from starting. If the chainsaw won't start, clear any clogs and check the fuel lines for damage. If the fuel lines are damaged, they will need to be replaced with manufacturer-approved parts.

To replace the fuel lines, first, remove the fuel cap and empty the fuel tank into an approved storage container. Then, using an Allen wrench, remove the cylinder shield by unscrewing the screws that hold it to the engine. Disconnect the spark plug wire and remove the air filter cover and filter.

Straighten a piece of coat hanger and bend a hook on one end. Feed this through the mouth of the tank to remove the white cylindrical fuel filter. Cut the fuel line to detach the filter. Next, remove the carburetor by unscrewing the mounting nuts that secure it to the engine. Pull the carburetor from the engine block, being careful not to bend the throttle linkage or damage the gas lines.

Now, you can remove the old fuel lines. Pull the fuel lines off the carburetor and primer bulb using needle-nose pliers. In some models, you may need to remove the screws from the primer bulb to completely detach the fuel lines.

To install the new fuel lines, cut the ends at an angle to help thread them into the tank. Push the large line about one inch into the tank, and push the small line far enough so that it can be grabbed through the mouth of the tank with needle-nose pliers. Pull the small line out, cut the end square, and install the fuel filter. Push the line back into the tank so that the filter rests at the bottom. Trim the fuel lines and connect them to the carburetor.

Finally, reinstall the carburetor, air filter cover, and cylinder shield. Refill the fuel tank, and your chainsaw should be ready to go!

Chainsaw fuel lines are typically clear plastic tubing

When replacing the fuel lines, it is important to cut the new tubes to the proper length. The old tubes can be removed from the carburetor using needle-nose pliers and pulled out from the tank. When removing the fuel line that feeds the carburetor, the small cylindrical fuel filter will pop off the tube. The new tubes should be cut to the same length as the original tubing to ensure a proper fit.

When inserting the new tubing into the gas tank, it may be difficult to advance the tubing fully into the tank. A pair of bent needle-nose pliers can be used to grasp the tubing and pull it through. Alternatively, hemostats can be used to perform the same function. A small amount of lubricant can also be sprayed onto the tube before insertion to aid in ease of entry. The tip of the fuel line that fits into the tank can also be cut at a diagonal angle to allow fuel to feed into the tube more easily and aid in insertion.

There are also a number of tricks that can be used to make it easier to pull the fuel lines into place without damaging them. One trick is to use a ballpoint pen spring by stretching it over the fuel line and twisting it in like a screw. Another trick is to cut the tubing at an angle or slice it in half for the first inch and put a taper where it finally goes wide. A piece of wire can also be stuck through the wall of the line to pull it into place.

Use a 7/16-inch socket driver to remove the carburettor

To remove the carburettor of a chainsaw, you will need a 7/16-inch socket driver, an Allen wrench, work gloves, paper towels or shop rags, and an approved fuel container.

First, put on your work gloves and move to a well-ventilated area. Then, remove the fuel cap and drain the tank into the approved storage container. Next, remove the cylinder shield by taking out the screws with the Allen wrench and lifting it off. Now, disconnect the spark plug wire and remove the air filter by pulling off the cover of the air filter housing.

Here comes the part where you will need the 7/16-inch socket driver. Using the driver, remove the two mounting nuts that secure the carburettor to the engine. Pull the air filter housing off the carburettor. Now, carefully pull the carburettor away from the engine block, being cautious not to bend the throttle linkage or damage the gas lines. Detach the gas lines from the carburettor using needle-nose pliers. Finally, disconnect the throttle linkage and pull the carburettor completely off the mounting studs.

Cut the new fuel lines at an angle to help with threading them into the tank

When replacing the fuel lines on a chainsaw, cutting the new fuel lines at an angle is a useful trick to help with threading them into the tank. This method is also known as the "string trick" in some service manuals.

To begin, use a pair of scissors to cut the new fuel lines at a sharp angle, creating a point at the tip. This pointed end will now more easily fit into the small opening of the fuel tank. Next, use needle-nose pliers to grab the fuel line about a quarter of an inch below the angled cut and push it into the tank.

If you are still having trouble getting the line into the tank, you can try a few additional tricks. One suggestion is to use a long piece of wire, such as a coat hanger, and insert it into the fuel line to give it more rigidity. Another option is to poke a small hole just below the angled cut and thread fishing line through the hole, which can then be used to help pull the fuel line into the tank. Lubricating the fuel line with a drop of oil or WD-40 can also make it easier to thread.

Once the fuel line is in the tank, pull it out through the mouth of the tank and cut the end square. Then, install the fuel filter and push the line back into the tank so that the filter rests on the bottom. Finally, trim the fuel line to the correct length and connect it to the carburetor.

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