How To Put Wire In A Weed Eater: Beginners Guide

how to put wire in a weed eater

A weed eater or a string trimmer, whatever you call it, is a very important gadget that is responsible for your neat and good-looking lawn. 

Unwanted weeds that accumulate over time need to be trimmed and this is the one that makes your work easier. After some uses the string becomes brittle and it will lose its efficiency.

In this case, you will need to replace the string so that you can your trimmer functions smoothly and gives you a tidy lawn. It is also the main reason, some companies provide a string roll with the weed eater for free.

Often if you are a beginner, you may not be aware of how to put wire in a weed eater. But not to worry!

Whether it’s your first time or you’re looking to refine your skills, we’ve got you covered with easy-to-follow instructions that will have your weed eater running smoothly in no time.

How To Put Wire In A Weed Eater: Step by Step

Step 1: Gather Your Tools

Before you start, make sure you have the necessary tools ready.

Tools You’ll Need:

  • Screwdriver
  • Safety gloves
  • Replacement trimmer wire roll
  • Safety glasses
  • Wire cutter

Step 2: Preparing the Weed Eater

  • Ensure the weed eater is turned off and cool to the touch.
  • Disconnect the spark plug to prevent any accidental starts.

Step 3: Accessing the Cutting Head

  • Lay the weed eater on a flat surface with the cutting head facing up.
  • Locate the retaining knob on the side of the cutting head.
  • Loosen and remove the retaining knob using a screwdriver.
  • Carefully remove the cover from the cutting head.

Step 4: Removing the Old Wire

  • Inside the cutting head, you’ll find the old trimmer wire. Gently pull it out, removing any leftover pieces.
  • Clean the inside of the cutting head to ensure proper wire placement.

Step 5: Adding New Wire

  • Measure and cut an appropriate length of replacement trimmer wire from the string roll with the wire cutter.
  • Insert one end of the wire into one of the anchor holes in the cutting head.
  • Wind the wire in the direction indicated on the cutting head until it’s snug.
  • Repeat the process for the second length of wire in a parallel fashion.

Step 6: Reassembling the Cutting Head

  • Place the cover back onto the cutting head.
  • Reattach the retaining knob and tighten it securely.

Step 7: Testing Your Weed Eater

  • Reconnect the spark plug.
  • Turn the weed eater on and ensure the wire feeds correctly from the cutting head.

How often You should replace the string

The frequency at which you need to replace the string (also known as trimmer line) in a string trimmer can vary depending on several factors, including the type of string trimmer, the type of string you’re using, the thickness of the weed you’re cutting, and how often you use the trimmer. Here are some general guidelines to help you determine when to replace the trimmer line: 

Wear and Tear: Check the condition of the trimmer line regularly. If you notice that it’s become frayed, worn, or has many nicks and cuts, it’s time to replace it. A damaged trimmer line is less effective at cutting and can put additional strain on the trimmer’s motor.

Frequency of Use: If you use your string trimmer frequently to maintain a large yard or property, you may need to replace the trimmer line more often. Heavy use can wear down the line more quickly.

Type of Vegetation: The type of vegetation you’re cutting also affects how often you need to replace the trimmer line. If you’re primarily trimming soft grass, the line may last longer than if you’re cutting through thick weeds or woody plants, which can wear down the line faster.

Line Diameter: The diameter or thickness of the trimmer line can impact its durability. Thicker lines tend to last longer and are better suited for tougher jobs, but they may also put more strain on the trimmer’s motor.

Technique: Proper technique can extend the life of your trimmer line. Avoid forcing the trimmer into dense vegetation, and instead, use a gentle back-and-forth motion to cut through the material.

Line Material: Trimmer lines come in various materials, such as nylon, which is common, or more durable materials like titanium-coated lines. Consider using a higher-quality line if you want it to last longer.

As a general rule of thumb, you may need to replace the trimmer line several times during the gardening season, with more frequent replacements if you have a lot of cutting to do or if you’re dealing with particularly tough vegetation.

Always have a spare trimmer line on hand to ensure you can replace it as needed, so you can maintain the efficiency and effectiveness of your string trimmer.


If you are replacing the string of your weed wacker for the first time, these simple steps will definitely help you to easily perform the task. 

Follow the safety measures of using gloves and ensuring to unplug the device, as your safety is most important. 

Now you can go ahead, dive into the world of weed eater maintenance, and enjoy a beautifully manicured lawn with ease.

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