Replacing Weed Wacker Fuel Lines: A Step-By-Step Guide

Replacing the fuel lines in your weed wacker is a relatively simple task that can be completed with the right tools and safety precautions. Fuel lines can become blocked, bent, or split over time, preventing gas from reaching the engine. This guide will cover the steps to replace fuel lines in common Craftsman, MTD, Poulan, Husqvarna, Toro, and Weed Eater line trimmers.

Disconnect the spark plug wire

Disconnecting the spark plug wire is an important step when replacing weed wacker fuel lines. This step ensures that you avoid any accidental ignition during the fuel line replacement process. Here is a detailed guide on how to disconnect the spark plug wire:

Locate the Spark Plug Wire

The spark plug wire is usually visible near the weed wacker's handle. Most models have a standard black wire and tubular boot, but some may have a rectangular rubber boot that covers both the wire and the plug. The spark plug is an essential component of your weed wacker, and it is positioned on the engine housing. It is what allows the engine to start.

Prepare for Removal

Before removing the spark plug wire, it is important to set the weed wacker down on a flat surface. This ensures stability and makes it easier to work on. If your weed wacker has a rectangular rubber boot, you will need to use a flat-head screwdriver to gently pry it upward while simultaneously pulling the boot with your other hand. This step ensures that you don't damage the boot or any other components if it is stuck to the plug.

Remove the Spark Plug Wire

Once the boot is pried loose, pull it away from the spark plug. Now, you will need a socket wrench. Fit the proper-sized socket over the spark plug and attach it to the wrench. The size of the socket may vary depending on the model of your weed wacker, so it is important to refer to your specific model's instructions. Common sizes include 5/8-inch, 3/4-inch, or 13/16-inch sockets.

With the socket wrench in place, jerk it sharply in a counterclockwise direction to loosen the spark plug. Once it is loose enough, you can finish unscrewing it by hand. Be sure to wear rubber gloves, as your fingers will come into contact with grease when handling the plug.

Additional Tips

When disconnecting the spark plug wire, always pull on the plug itself and never on the spark plug wire. Additionally, it is important to keep the surrounding area clean and free of dirt and debris during this process. If you encounter any resistance or if the boot seems stuck, a small amount of WD40 can be sprayed around the plug to help lubricate it.

By following these steps, you can safely disconnect the spark plug wire on your weed wacker, allowing you to proceed with replacing the fuel lines.

Remove the fuel cap and empty the fuel tank

To replace the fuel lines in your weed wacker, you'll first need to remove the fuel cap and empty the fuel tank. This is an important first step to ensure the procedure is safe, and it will also make it easier to access the fuel lines.

Before you begin, ensure you are wearing appropriate safety gear, including gloves and eye protection. Work in a well-ventilated area to avoid inhaling fumes. Place an approved container on the ground near your weed wacker. This container will be used to catch the fuel that you pour out of the tank.

Now, locate the fuel cap on your weed wacker. It is usually found on the upper portion of the tool, often at the back, and is typically secured with a screw-on or snap-on mechanism. Once you've located the cap, proceed to unscrew or pull it off, depending on its design. Place the cap aside in a safe place where it won't get lost.

With the fuel cap removed, you can now start to carefully pour out the fuel from the tank into the approved container. Go slowly to avoid spilling any fuel, and ensure the container is securely placed to catch all the liquid. Continue pouring until the tank is completely empty.

Once the tank is empty, you can proceed to the next steps of replacing the fuel lines, which involve removing the fuel filter and disconnecting the lines from the carburetor.

Remove the fuel filter

To remove the fuel filter from your weed wacker, you'll first need to drain any excess fuel from the tank. Loosen and remove the fuel cap, and then pour the fuel into an approved storage container.

Now you need to locate the fuel filter. It's inside the gas tank, and it looks like a small white cylinder attached to the end of the fuel line. You can fish it out using needle-nose pliers or a straightened wire coat hanger with a hook on the end.

Once you've got hold of the fuel filter, simply pull it off the end of the fuel line. You might need to twist it as you pull.

If you're having trouble getting the fuel filter out through the filler hole, try turning the weed wacker upside down and giving it a shake so that the filter falls towards the opening. You could also try feeding a new piece of fuel line into the tank, then using a pair of hemostats or pliers to pull the line back out, bringing the filter with it.

If all else fails, you can cut the fuel line inside the tank, allowing the filter to drop into the tank. Then, simply pull the fuel line out through the filler hole, bringing the filter with it.

Disconnect the lines from the carburetor

Disconnecting the fuel lines from the carburetor is a crucial step in replacing the fuel lines of your weed wacker. Here's a detailed guide on how to do it:

Firstly, before you begin any work on your weed wacker, it's important to take safety precautions. Make sure the engine is cool to the touch, and disconnect the spark plug wire from the spark plug. This will prevent any accidental ignition during the repair process.

Now, let's focus on the fuel lines. It is important to make a diagram or take a picture of how the fuel lines are currently configured between the fuel tank and the carburetor. This will serve as a reference when reconnecting the new fuel lines.

To physically disconnect the fuel lines from the carburetor, you'll need a pair of needle-nose pliers. Use the pliers to carefully grip and remove the fuel lines from the carburetor. Be gentle, but firm, to avoid any damage to the surrounding components.

Once the fuel lines are disconnected from the carburetor, you'll be able to pull them out of the fuel tank. If they're stuck or difficult to remove, you can carefully cut the lines flush with the tank and then use a small screwdriver to push the remaining line pieces into the tank. Remember to tip and shake the trimmer to ensure all fuel line pieces are removed from the tank.

At this stage, you've successfully disconnected and removed the old fuel lines, and your weed wacker is ready for the new fuel lines to be installed. Remember to take appropriate safety precautions when disposing of the old fuel lines and any spilled fuel.

Pull the fuel lines out of the tank

Pulling the fuel lines out of the tank is a crucial step in replacing the fuel lines of your weed wacker. Here is a detailed, step-by-step guide to help you through the process:

Before you begin, ensure you have the necessary tools, such as needle-nose pliers and a small screwdriver, and safety equipment, including gloves and safety goggles. It is also recommended to work in a well-ventilated area.

First, locate the fuel lines inside the tank. You may need to tip the weed wacker and shake it gently to identify where the lines are situated. Once located, use the needle-nose pliers to grip the lines securely. If the lines are still attached to the carburetor, refer to the previous steps on disconnecting the fuel lines from the carburetor before attempting to pull them out of the tank.

Now, gently but firmly, pull the fuel lines out of the tank. This step may require some force, but be careful not to damage the tank or any other components. If the lines are difficult to remove, an alternative method is to cut the lines flush with the tank using a sharp tool, such as a knife or a pair of scissors. Be cautious not to damage the tank when cutting the lines.

After cutting the lines, use a small screwdriver to push the remaining portions of the lines into the tank. This will ensure that there are no sharp edges protruding from the tank, which could pose a safety hazard. Once the lines are removed, inspect the tank for any debris or residue left behind. Use a clean cloth or paper towel to wipe away any fuel or dirt, ensuring a clean surface for the installation of the new fuel lines.

If you encounter any difficulties during this process, it is recommended to refer to a repair guide or seek assistance from a qualified technician. Safety should always be a top priority when working with power tools and equipment.

Frequently asked questions