Replace Fuel Line On Weed Eater

As weed eaters get older (like people- as I’m finding out) – they begin to run into maintenance issues. Various parts become brittle and wear out.

Much like humans, that doesn’t mean you need to throw them away and get a new one! It’s a relatively simple job to replace the fuel lines on a string trimmer. You don’t need to be super-handy to do it, and it doesn’t cost much money.

Read on to find out the steps required in how to replace gas line on your weedeater.

Supplies Needed To Change A String Trimmer Fuel Line

  • Needle nose pliers
  • Screw driver
  • Safety googles
  • Digital camera – to easily document what part went where.
  • A new fuel filter
  • New fuel lines.

How to replace the gas line on a weed eater?

Damaged gas lines for a weed whacker call for replacement with a new one. You can easily replace the old fuel line by following these 6 easy steps:

Step 1: Preliminary safety steps – Remove the spark plug wire from the spark plug. This is for safety – we don’t want the engine to start accidentally. Make sure it doesn’t touch the spark plug when removing it.

Put on your safety glasses.

Siphon out the gas from the fuel tank. The more you get out now, the less that will spill in the next step. Place down some disposable rags in prep to catch the remaining fuel in the tank.

Step 2: With the help of a pair of needle nose pliers pull the two fuel lines off the carburetor. You will likely spill a little bit. Just clean it up before moving on.

Step 3: Depending on your model, you may have to remove your gas tank. If this is the case – on the fuel tank you will find two screws that hold it in place. With the help of a screw driver unscrew them and remove the gas tank from the weed eater.

Step 4: You will now be able to remove the two gas lines. Do this with some care. Take the old lines and dispose of them properly. They will smell like – DUH – gasoline – so you might want to wrap them in a plastic bag to contain the smell.

If you find a fuel filter in the line, remember where it is located. Take the new filter and place it in the corresponding spot in the new fuel line. Keeping this clean is important, so it pays to replace it at the same time you change the fuel lines.

Step 5: Insert the fuel line into the gas tank in the same hole from which you removed the damaged one. Now, penetrate the line through small hole and out the large hole to the lid for the gas tank. You can also take the help of your pliers to bend and to pass the line from one hole to another.

Step 6: Reattach the gas tank to the weed eater with the screws that were taken off earlier. Do the same with the fuel lines to the carburetor just like they were attached before. Similarly, reattach the spark plug wire. This is where you’ll rely on the pictures you took earlier.


Hopefully this guide is helpful in replacing your fuel lines on your string trimmer. Since there are many different brands and types of gas trimmers, it’s hard to make a guide that fits all makes and models. If a step doesn’t seem to fit how your weed eater is built, please – READ YOUR MANUAL. It’ll have information SPECIFIC to your particular power tool.

Here are some other interesting articles to check out:

Leave a Reply

Your email address will not be published. Required fields are marked *


  1. What if you forget the way the fuel line was taken off the carburetor, How will I know which is fuel in and fuel out .

    1. Put your finger over one of the pipes into the carb, and pump the priming bulb. If you feel suction, that’s your fuel in line.