How to Restring A Weed Eater | Replacing String on a Trimmer


Samantha Bullington / Tuesday August 15, 2023


Close up of hands demonstrating how to restring your weed eater

Introduction

Over time, the cutting string on your weed eater will fray, break, and wear out from repeated use. Restringing the weed eater spool with a new line is a basic maintenance task that will keep your weed wacker cutting properly and restore its full functionality. This step-by-step guide will teach you how to remove the old string, wind the replacement string correctly, and reassemble the trimmer head. With the right materials and proper technique, you can restring your weed eater in just a few minutes. Learning this simple process will allow you to replace worn string yourself and avoid costly repairs or replacements. Let’s get into the nitty gritty of restringing for smooth trimming once again!

What You’ll Need

To restring your weed eater, you will need the proper replacement weed eater string for your specific model in the recommended gauge and length. Have a tool on hand to cut the string to size such as sharp scissors or a pocket knife. We highly recommend wearing work gloves to protect your hands from hot equipment while taking the trimmer apart and to guard against cuts from the sharp string during rewinding. Rags allow you to wipe away any debris and keep the restringing work area clean.

An optional item is a spare pre-wound spool that permits quick swap out in case you run out of string mid-job. To prevent frustration and delays during the restringing process, make sure you gather all the necessary materials before getting started. The most essential supplies are the right new string for your weed eater model and a proper cutting tool to trim the line. With the correct trimmer string, cutting tool, protective gloves, and other useful supplies on hand, you’ll have everything you need to quickly and smoothly restring your weed eater.

Step 1 – Remove the Trimmer Head

To begin the process of removing the trimmer head from your weed eater, follow these steps for a safe and effective procedure:

  1. Turn off the weed eater and unplug it to ensure your safety while working. This step also allows the trimmer head to cool down if it’s hot from previous use.
  2. Locate the release tabs on the trimmer head. You typically need to press two tabs simultaneously to release the head.
  3. Press the release tabs firmly and simultaneously, and then pull the trimmer head straight off the shaft. Avoid twisting or pulling it at an angle, as this can cause damage. Use gentle yet steady force to avoid any unnecessary harm.
  4. Once you’ve successfully removed the trimmer head, set it aside in an organized manner to keep your work area clear and prevent the loss of any small components.
  5. Before proceeding further, take a moment to inspect the spool area for any debris or accumulated grass clippings. If you notice any, remove them to ensure a clean and smooth process to restring your weed eater.

Remember, removing the trimmer head is the crucial first step in gaining access to the spool and the old string. Properly pressing the release tabs and pulling the head off straight will help prevent damage to the spool and attachment point. Keeping the work area organized and free of debris ensures a smoother overall process while the trimmer head is detached.

Step 2 – Cut the Replacement String

To ensure a successful restringing process for your weed eater, follow these steps for measuring and cutting the replacement trimmer string:

  1. Measure the string to the recommended length specified for your specific weed eater model. This information can usually be found in the user manual or on markings located on the trimmer head.
  2. Use sharp scissors or a knife to cut the string to the measured length. Using a sharp cutting tool will result in clean and precise cuts, enhancing the overall performance of your trimmer.
  3. For dual-line weed eater models, it’s important to cut two lengths of string to the same size. This ensures the balanced and effective operation of the trimmer head. Follow the same measuring and cutting process for both lengths of weed eater string.

By measuring the string accurately and using sharp cutting tools, you’ll ensure that the replacement string is the correct length and is ready to be loaded onto the trimmer head for optimal performance.

Step 3 – Insert String in Anchor Hole

When it comes to inserting the string in the anchor hole of the trimmer head, follow these steps for a secure setup:

  1. Begin by locating a small hole positioned in the center of the spool. This hole serves as the anchor point for securing the string during the winding process.
  2. Cut a short length of string, typically around 1 to 2 inches in size. Keeping this piece short is essential as it will be inserted into the anchor hole.
  3. Insert the end of the string into the anchor hole. Ensure that you push it fully into the hole to establish a snug and secure fit. This step forms the foundation for winding the string around the spool.
  4. For trimmers with dual lines, follow the same steps to anchor the second string. Insert the end into the opposite anchor hole located across the spool. This balances the setup and prevents tangling.
  5. Once the strings are inserted in the anchor holes, give them a gentle tug to ensure they are securely held in place. If the string can be pulled out freely, reinsert it into the anchor hole to guarantee a firm grip.

Properly anchoring the string in the anchor hole is a crucial starting point for winding the spool effectively. By following these steps, you’ll set the stage for smooth and hassle-free operation while preventing issues like tangling and string loosening during use.

Step 4 – Wind the String Around the Spool

When it’s time to wind the string neatly around the spool of your weed eater’s trimmer head, follow these steps to ensure an even and effective setup:

  1. Starting Point: Begin winding the string at the top of the spool, closest to the anchor hole where you’ve secured the end of the string.
  2. Direction Arrows: Pay attention to any direction arrows or indications on the spool that show the proper winding direction. Follow these arrows to wind the string correctly.
  3. Maintain Tension: As you wind the string, keep a steady tension on it. This prevents the string from becoming loose or tangled during use.
  4. Tight Wrapping: Wrap the string tightly around the spool, ensuring a snug fit. However, be cautious not to wind it so tightly that it won’t feed properly when the trimmer is in use.
  5. Dual-Line Models: If your trimmer uses dual lines, wind each string in its designated section on the spool. Be careful not to allow the strings to cross or tangle with each other.
  6. Leave Tail: Leave approximately 6 inches of string as a tail at the end of the winding. This tail will be used to thread through the exit holes in the next step.
  7. Trim Excess: After winding is complete, cut off any excess string protruding from the spool. This step helps maintain a tidy and efficient spool setup.

Proper winding technique is essential to ensure that the string feeds smoothly during operation. Following these steps, especially with attention to tension and direction, will result in a well-wound spool that’s ready for use.

Step 5 – Thread String Through Exit Holes

To seamlessly thread the string through the exit holes of your trimmer head, follow these steps for a smooth reassembly:

  1. Locate Exit Holes: Identify the exit hole or holes on your trimmer head. Single-line models typically have one exit hole, while dual-line models feature two.
  2. Prepare String Ends: Using the 6-inch string ends you left untrimmed after winding the spool, prepare to insert them into the exit holes.
  3. Insert String Ends: Carefully insert each string end into its corresponding exit hole. Depending on the size of the holes, you might need to use needle-nose pliers or tweezers to push the strings through fully.
  4. Complete Insertion: Push the string ends completely through the exit holes, ensuring they emerge on the outside of the trimmer head.
  5. Equal Lengths: Pull the strings through the exit holes until about 3 inches extend from each hole. Adjust the lengths so they are roughly equal.
  6. Trim Excess: If there’s any excess string protruding near the spool, trim it off. This prevents potential jamming or interference when you reassemble the trimmer head.
  7. Check Movement: Before proceeding, confirm that both strings can move freely through the exit holes. Ensure they are not caught or jammed in the holes.

Threading the string through the exit holes effectively allows the trimmer to feed the string as needed during operation. By following these steps and ensuring you properly position the strings, you’ll be ready to move forward with the reassembly process.

Step 6 – Reinstall Trimmer Head

To successfully reinstall the trimmer head, follow these steps for a secure fit and smooth operation:

  1. Align Notches: Begin by aligning the notches on the trimmer head and the spool. These notches ensure the proper positioning of the spool within the head.
  2. Press Spool into Head: Press the spool firmly into the trimmer head. Apply enough pressure until you hear or feel a satisfying click, indicating that the spool is securely in place.
  3. Check String Placement: Before proceeding further, perform a quick check to ensure that the strings are still properly threaded through the exit holes in the trimmer head.
  4. Replace Cover: Position the cover back onto the trimmer head and press down firmly. You should feel or hear a snapping sound as the cover locks into place.
  5. Confirm Cover Fit: Gently wiggle the cover to verify that it is securely attached. This step ensures that the cover won’t come loose during trimming.
  6. Wipe Down Weed Eater: Before using the weed eater, take a moment to wipe down the equipment and remove any debris or dirt that may have accumulated during the restringing process.
  7. Test Head Rotation: Give the trimmer head a quick spin by hand to test its rotation. Make sure it spins freely without any resistance or issues.

By following these steps, you’ll successfully reinstall the trimmer head and have your weed eater ready for action. Proper alignment, secure attachment, and smooth movement are essential for optimal trimming performance.

Step 7 – Test It Out

Before putting your newly restringed weed eater to work, follow these steps to ensure its smooth and effective operation:

  1. Clear the Area: Clear the work area of any debris or objects that could potentially get caught in the spinning string. This step ensures safe and uninterrupted operation.
  2. Power On: Power on the weed eater by following the start-up instructions provided by the manufacturer. This may involve priming the engine, setting the choke, or engaging the ignition.
  3. Spin-Up: Allow the trimmer head to spin up to its full speed. This ensures that the strings are properly engaged and ready for action.
  4. Tap the Head: Gently tap the trimmer head on the ground. This action releases additional string from the spool. Check that both lines are released evenly and extend to about 6 inches in length.
  5. Inspect String Length: Ideally, there should be about 6 inches of exposed string extending from the head. This length ensures effective trimming without causing strain on the engine or string.
  6. Listen for Sounds: As you engage the weed eater, listen for any abnormal sounds. Properly wound strings should result in a smooth and even cutting sound. Any unusual noises could indicate an issue with the string arrangement.
  7. Sample Trimming: Test the weed eater on a small patch of grass or weeds. Ensure that the strings are cutting cleanly and efficiently. If you notice any issues with the cutting performance, adjustments to the string length or arrangement may be necessary.

By following these steps, you can verify that your weed eater is in top-notch condition and ready to tackle your trimming tasks effectively. A well-prepared and properly functioning weed eater will make your yard maintenance tasks much more manageable.

Tips to Prevent Mid-Job Restrings

To ensure you don’t run into the inconvenience of having to restring your weed eater in the middle of a task, consider the following tips:

  1. Check String Level: Before starting your job, take a moment to check the level of string on your weed eater. If it’s low, it’s better to restring it beforehand to avoid disruptions during your work.
  2. Backup Spools: Keep backup pre-wound replacement spools readily available. These allow for quick and efficient swaps, saving you time in case your current string runs out unexpectedly.
  3. Choose Heavy-Duty String: Opt for heavy-duty string, especially when working in challenging or rough conditions. It’s more durable and can withstand the demands of tougher vegetation.
  4. Minimize Ground Contact: Avoid excessive contact of the string with the ground. Continuous rubbing against the ground can quickly wear down the string. Adjust your technique to minimize unnecessary wear.
  5. Clear Debris: Before you begin, clear the work area of debris and objects that could damage or break the string. This prevents hidden objects from prematurely cutting the string.
  6. Cut Long Grass in Sections: When dealing with tall or thick grass, pause and cut in smaller sections. This reduces the strain on the string and prolongs its life in dense vegetation.
  7. Keep Spare String Accessible: Keep spare string and any necessary tools within easy reach. This ensures that if you do need to restring, you can do so quickly and without disruption.
  8. Monitor String Consumption: Estimate how much string you’ll need for the job and monitor its consumption as you work. This will give you a sense of how far your supply will last.

By taking these precautions and being prepared, you can minimize the likelihood of needing to restring your weed eater in the middle of your lawn maintenance tasks.

Conclusion

Like any tool, weed eaters require regular maintenance for optimal performance. Restringing your weed eater at the first signs of wear is the best way to keep your trimmer cutting cleanly. Follow the steps outlined here to neatly wind the new string onto the spool, thread it through the exit holes, and reinstall the head. Keeping spare pre-wound spools on hand helps you restring in no time if you run out mid-job. With some basic materials and these instructions, you can master this DIY repair yourself. To save money and extend the trimmer’s reliable service life you will need to restring your weed eater periodically.