How to Replace String on Ego Weed Eater? Quick Step-by-Step Guide

Introduction

Ego weed eaters are a top choice for homeowners and landscaping professionals alike, thanks to their powerful battery-powered design, zero emissions, and low maintenance requirements. While these tools are built to last, the cutting string is a consumable part that will wear out, fray, or break over time with regular use. Many Ego owners assume that replacing the string requires a trip to a repair shop or professional help, but the process is actually a simple, 5-minute DIY task that anyone can complete with basic tools. Whether you’re a first-time Ego tool user or have been maintaining your weed eater for years, this guide will walk you through exactly How to Replace String on Ego Weed Eater? quickly and correctly, so you can get back to trimming your lawn without delay. We’ll cover everything from the tools you’ll need, to step-by-step instructions, common mistakes to avoid, and tips for extending the life of your string to reduce how often you need to replace it.

• Why You Need to Replace Your Ego Weed Eater String Regularly
• Tools and Materials You’ll Need for the Replacement
• Safety Precautions to Take Before Starting
• Step 1: Disconnect the Battery and Prepare the Weed Eater
• Step 2: Remove the Old Spool and Remaining String
• Step 3: Measure and Cut the New Replacement String
• Step 4: Load the New String Into the Spool Correctly
• Step 5: Reinstall the Spool and Test the Weed Eater
• Common Mistakes to Avoid When Replacing Ego Weed Eater String
• How to Choose the Right Replacement String for Your Ego Model
• Tips for Extending the Life of Your Weed Eater String
• Troubleshooting Common Issues After String Replacement
• Frequently Asked Questions
• Conclusion

Why You Need to Replace Your Ego Weed Eater String Regularly

Replacing your weed eater string on a regular schedule is one of the easiest ways to keep your Ego tool running at peak performance, and avoid unnecessary damage to the motor or cutting head. Over time, the string will wear down from friction with grass, weeds, and occasional contact with hard surfaces like concrete or tree trunks. There are several clear signs that it’s time to replace your string:

• The string is shorter than 3 inches: When the string wears down to this length, it can’t cut effectively, and you’ll have to hold the weed eater very close to the ground, which can damage the spool housing and reduce cutting efficiency.
• The string is frayed, split, or has rough edges: Frayed string cuts unevenly, leaves ragged edges on weeds, and is much more likely to break mid-use, which is frustrating and can leave you with an incomplete trimming job.
• The string won’t feed properly: If you tap the cutting head on the ground to extend the string and it doesn’t come out, or if it feeds unevenly, the spool may be tangled with worn string, or the feed holes may be clogged with debris.
• Cutting performance has dropped significantly: If you have to go over the same area multiple times to cut through weeds, or if the weed eater stalls frequently while cutting, worn string is likely the culprit.

Regular string replacement also extends the overall life of your Ego weed eater. Worn, frayed string puts extra strain on the motor, which can reduce battery life over time and cause premature wear on internal components. By replacing the string as soon as you notice wear, you’ll keep your tool running smoothly for years to come.

Tools and Materials You’ll Need for the Replacement

Replacing the string on your Ego weed eater requires only a few basic tools and materials, most of which you likely already have at home. Having everything ready before you start will make the process faster and more efficient:

• Replacement weed eater string: Make sure to get string that matches the diameter and length specifications for your specific Ego model. Most standard Ego 15-inch weed eaters use 0.080-inch diameter round string, while heavier duty 17-inch models use 0.095-inch diameter. Check your user manual for exact specs if you’re unsure.
• Wire cutters or heavy-duty scissors: These will give you a clean, straight cut on the new string, avoiding frayed ends that can cause jams.
• Soft cloth: Use this to wipe down the spool housing and remove grass clippings, dirt, and debris before you open the cutting head.
• Work gloves: Even new weed eater string has sharp edges that can cause small cuts, so gloves will protect your hands while you work.
• Small flathead screwdriver (optional): This is only needed if the spool is stuck from debris buildup or over-tightening. Avoid using a Phillips head screwdriver, as it can slip and damage the plastic housing.
• Ego weed eater user manual (optional): Keep this on hand for model-specific instructions, spool diagrams, and string specifications.

Safety Precautions to Take Before Starting

While replacing your Ego weed eater string is a low-risk task, taking a few basic safety precautions will prevent injury and damage to your tool. Follow these guidelines before you begin:

• Always disconnect the battery first: This is the most important safety step. Even though Ego weed eaters have safety trigger locks, accidental startup can occur if the trigger is pressed while you’re working on the spool, which can cause the string to spin and cut your hands. Remove the battery by pressing the release latches on the side of the battery pack and pulling it straight out.
• Wear work gloves: As mentioned earlier, new and old string has sharp edges that can cause cuts. Gloves will protect your hands from injury while you handle the string and spool.
• Work on a flat, stable surface: Lay the weed eater on a workbench or the ground in a well-lit area, so it doesn’t tip over while you’re working.
• Keep children and pets away from the work area: Small parts like the spool cap and string can be choking hazards for young children, and an accidentally started weed eater can cause serious injury.
• Work in a well-ventilated area if cleaning debris: If you’re brushing off caked-on grass and dirt, do it outside to avoid inhaling dust or mold spores from wet grass clippings.

Pro Safety Tip: Never work on your weed eater while the battery is connected, even if you think the tool is turned off. It only takes one accidental press of the trigger to cause a serious injury.

Step 1: Disconnect the Battery and Prepare the Weed Eater

As emphasized in the safety section, the first step in any weed eater maintenance task is to disconnect the power source. For Ego battery-powered models, this means removing the battery pack from the bottom of the shaft (or top, depending on your model). Press the two release latches on the sides of the battery, then pull it straight out firmly until it comes free. Set the battery aside in a safe, dry place away from your work area.

Next, lay the weed eater on a flat surface with the cutting head facing up. Use your soft cloth to wipe down the entire spool housing, removing any grass clippings, dirt, or debris that may have built up around the spool cap. If there’s caked-on grime, use an old toothbrush or small brush to scrub it loose before wiping. This step prevents debris from falling into the internal feed mechanism when you remove the spool cap, which can cause jams later.

Note: If you can’t locate the battery release latches, refer to your user manual – some older Ego models have a single release button instead of dual latches.

Step 2: Remove the Old Spool and Remaining String

Once the cutting head is clean, locate the spool cap on the bottom of the cutting head. This is a round plastic cap that either twists counterclockwise to remove, or has a small release tab that you press while twisting (depending on your model). Turn the cap counterclockwise until it comes loose, then pull it off to expose the spool inside.

If there is any remaining string left on the old spool, pull it out gently to remove it. If the spool is stuck and won’t come out easily, use your small flathead screwdriver to gently pry the plastic tabs holding the spool in place – don’t use excessive force, as this can crack the cutting head housing. Once the tabs are released, pull the spool straight out of the cutting head. (See Also:How To Change Weed Eater String Dewalt)

Take a moment to observe how the old string was wound on the spool. Almost all Ego models are designed to have the string wound clockwise, so the string feeds correctly when the weed eater is in use. If you’re unsure of the direction, check the diagram printed on the side of the spool or in your user manual. If the old spool is cracked, broken, or the notches that hold the string ends are damaged, you can purchase a replacement spool from Ego or most home improvement stores for $10-$15 – just make sure it’s compatible with your specific weed eater model.

Step 3: Measure and Cut the New Replacement String

Now it’s time to prepare the new string. First, confirm the correct length and diameter for your model by checking your user manual. Most standard Ego single-line weed eaters require 10 feet of 0.080-inch diameter string, while dual-line models require 12 feet of the same diameter to accommodate two strands. Heavier duty 0.095-inch models may require slightly longer string, so always defer to your manual’s specifications.

Measure the string with a tape measure, or use pre-cut replacement string that’s labeled for your Ego model. Cut the string with your wire cutters or heavy-duty scissors, making sure the cut is straight and perpendicular to the string to avoid frayed ends. If the ends are frayed, they can get stuck in the feed holes or tangle in the spool while winding. For a clean finish, you can briefly hold the cut ends over a lighter for 1-2 seconds to melt the plastic and seal the ends – just be careful not to melt the string too much, as this can create a thick lump that won’t fit through the feed holes. Never use an open flame if you’re working in a dry, grassy area to avoid fire risk.

Step 4: Load the New String Into the Spool Correctly

This is the most critical step in the process, and the step most people struggle with. Loading the string incorrectly is the number one cause of tangling, poor feeding, and jams after replacement. Follow these steps carefully to load the string correctly:

1. Locate the small center hole in the middle of the spool, and the two small notches on the outer edges of the spool (these hold the loose string ends in place while you wind).
2. Take one end of your new string, insert it into the center hole of the spool, and push it through until 2-3 inches of string is sticking out of the other side of the spool.
3. Begin winding the string around the spool in the clockwise direction (this is the standard for all Ego models, and is usually indicated by an arrow printed on the side of the spool). Keep tension on the string as you wind to ensure it’s tight and even – don’t overlap the layers, as this will cause tangles later.
4. Wind the string until there is only 6-8 inches of loose string left hanging off the end.
5. Tuck the loose end of the string into one of the notches on the outer edge of the spool to hold it in place while you reinstall the spool.

If you have a dual-line Ego model, repeat this process with a second strand of string: insert the end into the second center hole, wind it clockwise (in the opposite direction of the first string, so they don’t tangle), and tuck the loose end into the second notch on the spool edge. Make sure both strings are the same length when you’re done winding.

Pro Tip: If you’re having trouble keeping tension on the string while winding, have a second person hold the end of the string taut, or clamp it to your work surface with a vice grip (don’t overtighten, as you don’t want to damage the string).

Step 5: Reinstall the Spool and Test the Weed Eater

Once the string is loaded correctly, it’s time to reinstall the spool and test the tool. First, align the spool with the slots in the cutting head housing, then push it in firmly until it clicks into place. Make sure the loose ends of the string are sticking out of the feed holes on the bottom of the cutting head – if they’re not, pull them through gently until they are.

Screw the spool cap back on, twisting it clockwise until it’s tight. Don’t overtighten the cap, as this can crack the plastic and make it difficult to remove the next time you need to replace the string. Finally, reinsert the battery pack into the weed eater, making sure it clicks firmly into place to ensure a secure connection.

Test the weed eater in a safe, open area away from people and pets. Turn it on and let the string spin for a few seconds to make sure it feeds correctly and there’s no wobbling or tangling. Tap the cutting head on the ground a few times to test the automatic feed function – the string should extend smoothly without jamming. Cut a few test weeds to confirm cutting performance is good. If the string doesn’t feed, turn off the weed eater, disconnect the battery, and double check that you wound the string in the correct clockwise direction and that the loose ends are tucked into the spool notches properly. (See Also:How Do You Store A Weed Eater)

Common Mistakes to Avoid When Replacing Ego Weed Eater String

Even with a simple task like string replacement, it’s easy to make small mistakes that lead to tangling, poor performance, or damage to your tool. Avoid these common errors to make the process as smooth as possible:

• Skipping the battery disconnection step: This is the most dangerous mistake, as accidental startup can cause serious cuts or injury. Always remove the battery before you start working on the spool.
• Winding the string in the wrong direction: If you wind the string counterclockwise, it will feed backwards when the weed eater is running, causing immediate tangling and jams. Always wind clockwise, as indicated on the spool or in your manual.
• Using the wrong string diameter: String that’s too thin will break easily, while string that’s too thick will jam the feed holes and put extra strain on the motor, reducing battery life. Always use the diameter recommended for your model.
• Overlapping the string while winding: Overlapping layers create lumps in the spool that cause the string to feed unevenly and tangle. Wind the string tightly and evenly, with no overlapping layers.
• Not cutting the string ends cleanly: Frayed or angled cut ends can get stuck in the feed holes or tangle in the spool. Always make a straight, clean cut, and seal the ends if needed.
• Overtightening the spool cap: This can crack the plastic cap, making it impossible to remove the next time you need to replace the string. Tighten the cap until it’s snug, but don’t use excessive force.

How to Choose the Right Replacement String for Your Ego Model

Not all weed eater string is created equal, and using the right type for your specific use case will improve cutting performance, reduce how often you need to replace the string, and extend the life of your Ego weed eater. The two most important specs to look for are diameter (measured in inches) and string shape, which is optimized for different types of vegetation. Below is a comparison of the most common string types compatible with Ego models:

For most average users, 0.080-inch round nylon string is the best all-around choice for standard Ego 15-inch weed eaters. If you frequently cut thick weeds, small brush, or overgrown areas, upgrade to square or serrated string for better cutting power and longer durability. Composite string is a great investment if you live in a wet climate, or if you often cut near sandy or rocky areas, as it resists abrasion and weather damage far better than standard nylon. Always avoid using string with embedded metal or wire, as this can damage the cutting head and cause dangerous fragments to break off while the tool is running.

While Ego’s branded replacement string is optimized for their tools, high-quality third-party string that meets the diameter and length specs for your model will work just as well for most users. Just make sure to buy string from a reputable retailer to avoid low-quality options that break easily or jam the feed mechanism.

Tips for Extending the Life of Your Weed Eater String

Replacing your string regularly is necessary, but there are several simple steps you can take to extend its lifespan and reduce how often you need to replace it:

• Avoid cutting against hard surfaces: Scraping the string against concrete, rocks, tree trunks, or fence posts will fray and break it much faster. Try to keep the cutting head 1-2 inches above the ground while trimming to avoid unnecessary wear.
• Keep the string at the correct length: Most Ego models have an automatic feed that extends the string when you tap the cutting head on the ground while the tool is running. Don’t manually extend the string longer than 6-8 inches from the cutting head, as longer string puts extra strain on the feed mechanism and wears down faster.
• Clean the cutting head and spool housing regularly: After each use, wipe down the cutting head with a soft cloth to remove grass clippings, dirt, and moisture. Buildup of debris can cause the string to jam, and moisture can degrade nylon string over time.
• Store your weed eater properly: Keep your Ego weed eater in a cool, dry place away from direct sunlight. UV exposure can degrade nylon string, causing it to become brittle and break more easily. If you won’t be using the tool for more than a month, consider removing the string from the spool to reduce tension and prevent warping.
• Don’t overload the tool: Avoid cutting thick, woody brush or dense vegetation that’s too thick for your model’s cutting capacity. Overloading the weed eater puts extra strain on the string and motor, causing the string to break faster and reducing the tool’s overall lifespan.

Troubleshooting Common Issues After String Replacement

If you’ve replaced the string on your Ego weed eater and are experiencing issues, don’t worry – most problems are easy to fix with a few quick checks. Below are the most common issues and their solutions:

• String won’t feed: First, check that you wound the string in the correct clockwise direction, and that the loose ends are tucked securely into the spool notches. Next, check the feed holes in the bottom of the cutting head for clogged grass or debris – clean them out with a small brush or toothpick. If the feed mechanism is still stuck, check that the spool is installed correctly and clicked into place.
• String breaks immediately after starting the weed eater: This is usually caused by using the wrong diameter string, or winding the string too loosely so it gets tangled as soon as it spins. Double check that you’re using the correct diameter for your model, and that you wound the string tightly and evenly without overlapping layers. Also, make sure you’re not cutting against hard surfaces while testing.
• String wobbles or vibrates excessively: This is almost always caused by an improperly installed spool. Turn off the weed eater, disconnect the battery, and check that the spool is seated all the way into the cutting head housing, and that the spool cap is tightened properly. If the string is wound unevenly, you may need to rewind it to remove lumps.
• Weed eater stalls while cutting: First, check that the string is the correct length (6-8 inches from the cutting head) and that you’re not trying to cut vegetation that’s too thick for your model. Next, make sure the battery is fully charged, as a low battery can cause the motor to stall under load. If the problem persists, check that the string is wound tightly and that there’s no debris stuck in the cutting head.

Frequently Asked Questions

1. How often should I replace the string on my Ego weed eater?

For average residential use (trimming your lawn 1-2 times per week), you’ll need to replace the string every 1-3 months. If you use your weed eater more frequently, or cut thick, dense weeds regularly, you may need to replace it every 4-6 weeks. Always replace the string immediately if you notice fraying, breaking, or if the string is shorter than 3 inches, as this will reduce cutting performance and put unnecessary strain on the motor. (See Also:How To Take Spool Off Ryobi Weed Eater)

2. Can I use third-party replacement string for my Ego weed eater?

Yes, as long as the string meets the diameter and length specifications for your specific Ego model. Ego branded string is optimized for their tools, but high-quality third-party nylon or composite string works just as well for most users. Just make sure to buy from a reputable retailer to avoid low-quality options that break easily or jam the feed mechanism.

3. My Ego weed eater has a dual-line spool – how do I load two strings?

For dual-line models, you’ll load two separate strands of string into the spool. Insert one end of each string into the two center holes of the spool, wind each string clockwise in opposite directions (so they don’t tangle), and tuck each loose end into the separate notches on the spool edge. Make sure both strings are the same length when you’re done, and that they’re not crossing each other while winding.

4. Why does my string keep getting tangled in the spool?

This is almost always caused by one of three mistakes: winding the string in the wrong (counterclockwise) direction, overlapping the string layers while winding, or not tucking the loose ends into the spool notches properly. Double check that you’re winding clockwise, winding tightly and evenly with no overlapping, and securing the loose ends before reinstalling the spool.

5. Can I sharpen my weed eater string instead of replacing it?