How to Restring a Yard Machine Weed Eater? MTD Yard Guide

Introduction

If you’re a homeowner or landscaper who relies on a Yard Machine weed eater to keep your property looking tidy, learning How to Restring a Yard Machine Weed Eater? is one of the most valuable maintenance skills you can master. Restringing your trimmer is a fast, low-cost task that eliminates the frustration of a dull, broken, or jammed line, and it helps you avoid costly trips to the repair shop or expensive replacement heads. Yard Machine, a brand owned by MTD Products, designs its weed eaters with user-friendly restringing processes, but small variations between bump feed, fixed line, and automatic feed models can make the process confusing for first-time users. This comprehensive guide walks you through every step of restringing your Yard Machine weed eater, including the tools you’ll need, safety best practices, tips for choosing the right trimmer line, and solutions for common issues that arise during and after the process. By the end of this guide, you’ll be able to restring your trimmer in 10 minutes or less, every time.

• Understanding Your Yard Machine Weed Eater
• When to Restring Your Weed Eater
• Tools and Materials You’ll Need
• Safety Precautions Before You Start
• Step-by-Step Guide to Restringing a Yard Machine Weed Eater
• Restringing a Bump Feed Head
• Restringing a Fixed Line Head
• Choosing the Right Trimmer Line for Your Yard Machine
• Tips for Extending Trimmer Line Life
• Common Mistakes to Avoid When Restringing
• Troubleshooting Common Post-Restring Issues
• Frequently Asked Questions
• Conclusion

Understanding Your Yard Machine Weed Eater

Yard Machine, a brand owned by MTD Products, manufactures durable, affordable weed eaters popular with residential homeowners and casual landscapers across North America. Unlike professional-grade trimmers designed for daily commercial use, Yard Machine models are built for occasional to frequent residential use, with parts that are easy to replace and maintain. Most Yard Machine weed eaters use one of three cutting head designs: bump feed, fixed line, or automatic feed. The restringing process varies slightly depending on your head type, so identifying your model’s design before you start will help you follow the correct steps and avoid frustration.

Bump feed heads, the most common on residential Yard Machine models, use a wound spool of line that advances when you tap the bottom of the head on the ground while the trimmer is running. This design is ideal for most residential users, as it eliminates the need to stop trimming to adjust line length. Fixed line heads, found on heavier-duty Yard Machine models designed for thick brush and overgrown areas, use pre-cut, non-wound line pieces that swap out quickly, making them a good choice for users who tackle dense vegetation regularly. Automatic feed heads, available on some premium Yard Machine models released in the last 5 years, advance line automatically when you release the trigger, eliminating the need to bump the head entirely, but they still use a wound spool that requires occasional restringing.

No matter which head type you have, the core restringing process is the same: remove old line and debris, install new line correctly, and test the feed before use. These steps apply to nearly all Yard Machine weed eaters sold in the last decade, though your user manual may include model-specific notes or warnings. If you’ve lost your manual, you can find a free digital copy on the MTD Parts website by entering your model number.

When to Restring Your Weed Eater

Knowing when to restring your Yard Machine weed eater will help you avoid unexpected downtime and keep your yard looking neat and professional. There are several clear signs that it’s time to replace your trimmer line, even if it hasn’t fully broken:

• Frequent line breakage: If your line is snapping regularly while cutting normal grass and weeds, it’s either worn out, wound incorrectly, or the wrong thickness for your model.
• Uneven cutting: If your trimmer leaves patches of uncut grass or struggles to cut through thick weeds, the line may be too dull or too short to make consistent contact with vegetation.
• Line won’t advance: For bump feed models, if tapping the head on the ground doesn’t release more line, the spool may be tangled, wound in the wrong direction, or out of line entirely.
• Visible wear and fraying: Inspect your line before each use; if you see frayed edges, nicks, or worn-down sections, it’s time for a replacement to avoid unexpected breakage mid-job.
• Damage after hitting hard obstacles: If you accidentally hit a rock, curb, or tree stump with your trimmer, inspect the line immediately for damage, and replace it if you see any breaks or frays.

For most residential users, restringing your Yard Machine weed eater every 3 to 6 months is sufficient, even if you don’t notice obvious wear. If you use your trimmer frequently for large properties or commercial landscaping, you may need to restring it every 1 to 2 months. Proactive restringing on a schedule will prevent you from being caught without working line when you need it most.

Tools and Materials You’ll Need

Restringing a Yard Machine weed eater requires very few tools, most of which you likely already have in your garage or toolbox. Gathering all your supplies before you start will make the process faster, more efficient, and less frustrating. Here’s everything you’ll need:

• Replacement trimmer line (correct diameter and shape for your model; 0.065-inch round line is standard for most residential Yard Machine trimmers, while 0.080-inch line is used for heavier-duty models designed for thick brush)
• Work gloves (to protect your hands from sharp line edges and sticky grass debris)
• Safety glasses (to protect your eyes from flying debris while working)
• Flathead screwdriver or the trimmer’s included hex key (to remove the spool cap; most Yard Machine trimmers come with a small hex key stored in the handle)
• Wire cutters or heavy-duty scissors (to cut line to the correct length)
• Clean, dry rag (to wipe debris off the cutting head and spool)
• Small soft-bristle brush (optional, for removing stuck grass and dirt from hard-to-reach areas of the spool housing)
• Line winding tool (optional, but makes winding line evenly and tightly much easier, especially for first-time users or those with limited hand strength)

You do not need to purchase OEM (original equipment manufacturer) trimmer line for your Yard Machine weed eater. Third-party lines that match the correct diameter and shape specifications work just as well, and are often more affordable. Always check your user manual for the exact line requirements for your specific model before purchasing replacement line, as using the wrong size can cause feeding issues and damage to your trimmer.

Safety Precautions Before You Start

While restringing a weed eater is a low-risk task, taking a few basic safety steps will prevent injuries and avoid damage to your trimmer. Follow these precautions before you begin working: (See Also:How To Load Weed Eater Cord)

1. Disconnect the spark plug or remove the battery: For gas-powered Yard Machine weed eaters, pull the spark plug wire off the spark plug to prevent the trimmer from accidentally starting while you’re working. For battery-powered models, remove the battery pack entirely. This is the most important safety step, as even a gentle pull on the starter cord can start the engine unexpectedly.
2. Wear personal protective equipment (PPE): Put on work gloves and safety glasses before handling trimmer line, which has sharp edges that can cut skin or cause eye injuries if it snaps unexpectedly while you’re working.
3. Work on a flat, stable surface: Place your weed eater on a workbench, table, or the ground in a well-lit area so you can see small parts and line ends clearly. Avoid working on uneven ground where the trimmer could tip over.
4. Ensure the trimmer is cool: If you just finished using your weed eater, let it cool down for at least 15 minutes before handling the cutting head, as the engine and exhaust can get hot enough to cause burns.
5. Keep children and pets away: Trim line and small parts can be choking hazards, so make sure no children or pets are in the work area while you’re restringing.

Step-by-Step Guide to Restringing a Yard Machine Weed Eater

As mentioned earlier, the restringing process varies slightly depending on whether your Yard Machine weed eater has a bump feed or fixed line head. Below are separate step-by-step guides for each head type, so you can follow the instructions that match your model.

Restringing a Bump Feed Head

Bump feed heads are the most common on Yard Machine residential trimmers, and restringing one takes 5 to 10 minutes once you have your supplies ready. Follow these steps exactly to ensure the line feeds correctly during use:

1. Remove the spool cap: Turn the spool cap (the round plastic piece at the bottom of the cutting head) counterclockwise to loosen it. Many Yard Machine models have a small locking tab on the side of the head that you need to press down before you can turn the cap. Set the cap aside in a safe place where it won’t get lost, as it is small and easy to misplace.
2. Remove the old spool and line: Pull the old spool straight out of the head. If there is any remaining line stuck in the spool housing, pull it out by hand or use a flathead screwdriver to gently pry it loose. Dispose of the old line properly, as it can be a choking hazard for pets and wildlife.
3. Clean the cutting head: Use your clean rag and small brush to remove any grass, dirt, or debris from the spool housing and the inside of the head. Buildup of debris can cause the line to jam or feed incorrectly, so this step is critical for smooth, long-lasting operation.
4. Measure and cut new trimmer line: Cut a single piece of line that is twice the length of your cutting head, plus an extra 12 inches. For most Yard Machine bump feed heads, this is between 10 and 15 feet of line, but check your user manual for the exact recommended length for your model to avoid wasting line or ending up with a spool that is too full.
5. Wind the line onto the spool: Find the directional arrow on the side of the spool (it will point either clockwise or counterclockwise). Wind the line onto the spool in the direction of the arrow, overlapping each layer evenly to avoid gaps or tangles. Do not over-wind the line, as this can cause it to kink or jam when feeding. If you have a line winding tool, use it to keep the line tight and even as you wind, which will reduce the chance of tangles.
6. Leave line ends exposed: Once the spool is full, leave 6 to 8 inches of line sticking out from each side of the spool. These ends will feed through the head when you bump it during use, so they need to be long enough to make contact with vegetation.
7. Insert the line ends into the spool’s eyelets: Align the line ends with the small notches or eyelets on the top of the spool, and push the ends through until they click into place. This keeps the line from slipping off the spool while you install it in the head.
8. Place the spool back into the cutting head: Align the spool’s center hole with the shaft in the middle of the head, and push the spool in firmly until it seats fully. Make sure the line ends are aligned with the exit slots on the sides of the head.
9. Thread the line through the head slots: Pull each line end through the corresponding slot on the side of the cutting head, leaving 6 to 8 inches of line sticking out of each slot. Do not pull the line tight, as this can cause it to slip out of the spool eyelets.
10. Replace the spool cap: Line up the tabs on the spool cap with the slots on the head, and turn the cap clockwise until it locks into place. For models with a locking tab, press the tab down to secure the cap fully.
11. Test the line feed: Hold the weed eater by the handle, and tap the bottom of the cutting head on a hard surface while the engine is off. The line should advance 2 to 3 inches with each tap. If it doesn’t advance, double-check that the line is wound in the correct direction and that the ends are properly seated in the spool eyelets.

Restringing a Fixed Line Head

Fixed line heads are designed for heavy-duty use, and they don’t require winding line onto a spool. Instead, you use pre-cut pieces of line that insert directly into the head, making restringing even faster than bump feed models. Follow these steps to restring a fixed line Yard Machine weed eater:

1. Remove the spool cap and spool: Turn the spool cap counterclockwise to remove it, then pull the old spool straight out of the head. Remove any remaining old line from the spool and dispose of it properly.
2. Clean the cutting head: Wipe away any grass or debris from the spool housing and head slots with your rag, just as you would for a bump feed model. Debris buildup can cause line to jam or feed incorrectly, even with fixed line heads.
3. Cut new line to the correct length: Cut two pieces of trimmer line to the exact length specified in your user manual. For most Yard Machine fixed line heads, this is between 8 and 12 inches per piece, but some larger models require longer line. Always measure rather than guessing, as line that is too long will cause uneven cutting and excess wear on the head, while line that is too short will not make contact with vegetation.
4. Insert the line into the spool: Each fixed line spool has small slots or holes on opposite sides. Insert one end of each line piece into a slot, pushing it through until it clicks into place on the other side of the spool. Make sure the line is seated firmly so it doesn’t fall out during use.
5. Place the spool back into the head: Align the spool with the shaft in the head, and push it in firmly until it seats fully. Make sure the line ends are aligned with the exit holes on the sides of the head.
6. Thread the line through the exit holes: Pull each line end through the corresponding exit hole on the side of the head, leaving the full length of the line exposed on both sides.
7. Replace the spool cap: Turn the cap clockwise until it locks into place, just as you would for a bump feed model. Do not over-tighten the cap, as this can damage the threads on the head.
8. Test the trimmer: Reconnect the spark plug or battery, start the weed eater, and test it on a patch of grass to make sure both lines cut evenly. If one line is shorter than the other, adjust it by pulling it through the exit hole until both sides are equal length.

Choosing the Right Trimmer Line for Your Yard Machine

Using the correct trimmer line for your Yard Machine weed eater is just as important as restringing it correctly. The wrong line can cause poor cutting performance, frequent breakage, and even damage to your trimmer’s engine or cutting head. When selecting replacement line, you’ll need to consider three key factors: diameter, shape, and material.

The diameter of your trimmer line is the most critical specification. Most residential Yard Machine weed eaters use 0.065-inch line, which is thick enough to cut through thick grass and weeds, but thin enough to work seamlessly with the trimmer’s feed mechanism. Heavier-duty Yard Machine models designed for brush and thick vegetation may require 0.080-inch line. Never use line that is thicker than the manufacturer’s recommended maximum, as this can overload the engine, reduce cutting power, and prevent the line from advancing properly.

Trimmer line shape also impacts cutting performance and durability. Round line is the most common and versatile option, ideal for general grass and weed trimming. Its smooth edges reduce drag and are less likely to break when hitting small obstacles. Square line has sharp, flat edges that cut like a knife, making it a good choice for thicker weeds and light brush. Star (or serrated) line has tiny teeth along its length that slice through dense vegetation with minimal effort, making it perfect for overgrown areas and commercial use. The table below compares the most common trimmer line types to help you choose the best option for your needs:

For most residential users, 0.065-inch round or square line is the best all-around choice, as it balances cutting power and durability for everyday use. If you frequently tackle thick brush or overgrown areas, upgrading to 0.080-inch star line will improve cutting performance and reduce the frequency of restringing your Yard Machine weed eater. Always check your user manual for the maximum line diameter your model can handle before purchasing replacement line.

Tips for Extending Trimmer Line Life

Proper restringing and maintenance will help your trimmer line last longer, reducing how often you need to restring your Yard Machine weed eater and saving you money on replacement line over time. Follow these tips to get the most out of your line:

• Store line in a cool, dry place: Exposure to direct sunlight and extreme temperatures can make trimmer line brittle and prone to breaking. Keep unused line in a sealed plastic bag in a garage or shed to protect it from the elements.
• Avoid cutting hard materials: Never use your weed eater to cut rocks, concrete, tree bark, or metal. These materials will dull or break your line instantly, and can damage the trimmer’s engine, spool, or cutting head.
• Wind line evenly when restringing: Gaps or overlapping layers on the spool will cause the line to snag and break during use. Take the time to wind the line tightly and evenly, following the directional arrow on the spool, to ensure smooth feeding.
• Clean the cutting head regularly: Grass and debris buildup in the head can cause the line to jam or feed incorrectly, leading to unnecessary breakage. Wipe out the head every time you restring the line, or every few uses if you’re working in dirty or wet conditions.
• Don’t overload the trimmer: Pushing the weed eater too hard against thick vegetation can put excess strain on the line, causing it to break. Let the line do the work, and use slow, steady passes to cut through thick weeds and brush.

Common Mistakes to Avoid When Restringing

Even experienced users make mistakes when restringing their Yard Machine weed eater, leading to jammed lines, poor cutting performance, and unnecessary frustration. Avoid these common errors to make the restringing process as smooth as possible: (See Also:How To Use Auto Feed Weed Eater)

• Winding the line in the wrong direction: This is the most common mistake users make. If you wind the line opposite the directional arrow on the spool, the line will not advance when you bump the head, and it will likely tangle and jam within minutes of use. Always check the arrow before you start winding, and double-check it if the line fails to advance after installation.
• Using line that is too thick: As mentioned earlier, line that exceeds your model’s maximum diameter will not feed properly, and can cause permanent damage to the engine or cutting head. Stick to the manufacturer’s recommended line size for your specific model, which you can find in the user manual.
• Not leaving enough line exposed: If you leave less than 6 inches of line sticking out of the head slots, the line will not be long enough to make contact with vegetation, and it may retract fully into the head during use. Always leave at least 6 inches of line exposed on each side after restringing, and trim any excess with wire cutters if needed.
• Skipping the debris cleaning step: Failing to clean grass and dirt out of the cutting head before installing a new spool will cause the line to jam quickly, even if you install it correctly. A 30-second cleaning step will save you 10 minutes of troubleshooting later.
• Over-tightening the spool cap: Turning the spool cap too tightly can warp the cap or damage the threads on the head, making it difficult to remove later. Turn the cap clockwise until it is snug, but don’t force it if you feel resistance.

Troubleshooting Common Post-Restring Issues

Even if you follow all the restringing steps correctly, you may encounter issues the first time you use your newly restrung Yard Machine weed eater. These are usually easy to fix with a few adjustments. Here are solutions to the most common problems:

• Line won’t advance when bumped: First, check that you wound the line in the correct direction, matching the arrow printed on the spool. If the direction is correct, remove the spool and check that the line ends are properly seated in the spool’s eyelets. If the line is wound too tightly, unwind it slightly and rewind it more loosely to reduce tension.
• Line breaks frequently: Confirm you are using the correct line diameter for your model. If the line is the right size, inspect the cutting head for sharp edges or burrs that may be cutting the line as it feeds, and smooth them with a small metal file if needed. Also, avoid hitting hard obstacles like rocks or curbs while trimming.
• Uneven cutting: Make sure both lines are the same length and properly seated in the spool. For fixed line models, pull the shorter line through the exit hole until both sides are equal. Also, confirm the spool is seated fully in the head, as a misaligned spool can cause uneven line length.
• Line jams in the head: Remove the spool cap and spool, pull out any tangled line, and clean out all debris from the head. Rewind the line evenly without overlapping layers, and avoid winding it too tightly. If jamming continues, inspect the spool for cracks or damage that may be causing tangles.

Frequently Asked Questions

How often should I restring my Yard Machine weed eater?

Restringing frequency depends on usage. Casual residential users who trim once a week should restring every 3 to 6 months. Frequent users or those with large properties may need to restring every 1 to 2 months. Always inspect your line before each use for fraying or wear, and restring immediately if you notice damage.

Can I use any brand of trimmer line on my Yard Machine weed eater?

Yes, you do not need to use OEM Yard Machine line. Any third-party trimmer line that matches your model’s recommended diameter and shape will work perfectly, and is often more affordable. Always check your user manual for exact line specifications before purchasing.

Why does my line keep jamming after restringing?

Jamming is almost always caused by winding the line in the wrong direction, winding it too tightly, or failing to clean debris out of the cutting head. Double-check the winding direction against the arrow on the spool, unwind the line slightly to reduce tension, and clean the head thoroughly before reinstalling the spool.

Do I need a special tool to restring my Yard Machine weed eater?

No special tools are required for most Yard Machine models. Basic household tools like a screwdriver, wire cutters, and a rag are all you need. Optional line winding tools make the process easier for frequent users, but they are not necessary for casual restringing. (See Also:Should You Soak Weed Eater Line In Water)

What happens if I use trimmer line that’s too thick for my model?

Using line that is too thick can cause feeding issues, put excess strain on the engine, increase fuel consumption for gas models, and damage the spool or cutting head. Always stick to the maximum line diameter recommended in your user manual to avoid these problems.

Conclusion

Learning How to Restring a Yard Machine Weed Eater? is a simple, rewarding maintenance task that every Yard Machine owner should master. Restringing your trimmer takes just 10 minutes or less, costs a fraction of the price of a repair or replacement head, and keeps your yard looking neat and well-maintained. By following the step-by-step guides for your specific head type, using the correct trimmer line for your model, and avoiding common mistakes like winding the line in the wrong direction or skipping the debris cleaning step, you can ensure your weed eater operates smoothly for years to come.

Remember to always prioritize safety by disconnecting the spark plug or removing the battery before you start working, and inspect your line regularly for signs of wear to avoid unexpected downtime mid-job. With the tips, troubleshooting advice, and step-by-step instructions included in this guide, you’ll be able to tackle any restringing task with confidence, no matter what type of Yard Machine weed eater you own. The next time your line breaks or wears out, you won’t need to visit the hardware store for a costly new head—just grab a spool of trimmer line and restring it yourself in minutes, saving both time and money in the long run.