Introduction
Dewalt weed eaters are a top choice for homeowners and landscaping professionals alike, thanks to their durable build, long battery life, and reliable cutting performance. Like any power tool used for yard maintenance, the trimming line (often referred to as wire) will wear down over time from repeated contact with rocks, thick grass, and other obstacles. Knowing how to change wire on Dewalt weed eater is a basic but essential skill that will save you money on replacement tools and keep your trimmer working at peak efficiency. This comprehensive guide walks you through every step of the process, from selecting the right replacement line to troubleshooting common issues, so you can complete the task in minutes even if you have never performed tool maintenance before.
- Introduction
- Why You Need to Change Your Dewalt Weed Eater Wire Regularly
- Types of Wire Compatible with Dewalt Weed Eaters
- Tools and Supplies You’ll Need for the Replacement
- Step-by-Step Guide to Changing Wire on Dewalt Weed Eater
- How to Adjust Line Feed for Optimal Performance
- Comparison of Common Dewalt Weed Eater Wire Gauges and Lengths
- Tips and Best Practices for Extending Wire Life
- Common Mistakes to Avoid When Replacing Weed Eater Wire
- Frequently Asked Questions
- Conclusion
Why You Need to Change Your Dewalt Weed Eater Wire Regularly
Many users wait until their trimmer line is completely worn out or stops working before replacing it, but regular line changes offer several key benefits. First, worn or frayed line cuts less efficiently, meaning you will spend more time and effort tackling overgrown grass and weeds. Second, extremely short line can damage the trimmer’s auto-feed mechanism, as the feed rollers may grab the spool itself instead of the line, leading to costly repairs. Third, old, brittle line is more likely to break off during use, which can be a safety hazard if the broken piece flies toward you or bystanders. By replacing your line at the first sign of wear, you will maintain consistent cutting performance, extend the life of your Dewalt weed eater, and avoid unnecessary repair costs.
Types of Wire Compatible with Dewalt Weed Eaters
Not all trimmer line works with Dewalt weed eaters, so it is important to select the right type for your model to avoid jams, poor performance, or damage to the tool. Dewalt recommends three main line styles for its trimmers, each suited to different use cases. Some Dewalt models with auto-feed mechanisms may require specific line types to function correctly, so always verify compatibility with your model’s specifications before purchasing replacement line.
Round line is the most common and versatile option, ideal for general-purpose trimming of grass, small weeds, and light brush. It is affordable, easy to load, and works well for most residential users.
Square line has a flat, four-sided profile that cuts more aggressively than round line, making it a better choice for thicker weeds, denser grass, and light woody brush. It is slightly more durable than round line, so it lasts longer when used on tough vegetation.
Serrated line features small, tooth-like ridges along its length that slice through thick, tough vegetation with minimal effort. It is the most durable option, designed for heavy-duty commercial use or overgrown properties with dense brush.
In addition to the line style, you will need to select the correct diameter (gauge) for your specific Dewalt model. Most standard 20V MAX trimmers use 0.080″ (2.03 mm) line, while heavier-duty 60V MAX models may require 0.095″ (2.41 mm) line. Using a line that is too thick will not fit through the trimmer head’s feed holes, while a line that is too thin will wear out quickly and may not cut effectively. Always check your user manual for the exact specifications for your model before purchasing replacement line.
Tools and Supplies You’ll Need for the Replacement
Replacing the line on your Dewalt weed eater does not require any special power tools or technical expertise. You will only need a few basic supplies, most of which are included with the trimmer when you purchase it new. While you can use generic work gloves, cut-resistant gloves are recommended for extra protection when handling sharp trimmer line.
- Replacement trimming line, cut to the correct gauge and length for your Dewalt model
- Work gloves, to protect your hands from sharp cut line ends and rough trimmer parts
- A small flathead screwdriver or the included Dewalt line removal tool, to release the spool cap
- A tape measure, to cut the line to the correct length for your model
- Sharp scissors or a utility knife, to cut the line cleanly without fraying
- A clean, dry rag, to wipe away grass clippings and debris from the trimmer head before starting work
All of these items are inexpensive and easy to find at any hardware store or home improvement center. If you purchased your Dewalt weed eater new, the line removal tool and a small spool of replacement line are often included in the box. (See Also:How To Restring A Dewalt Weed Eater)
Step-by-Step Guide to Changing Wire on Dewalt Weed Eater
Once you have all your supplies gathered, the actual line replacement process takes just 5 to 10 minutes for most Dewalt models. Follow these steps carefully to ensure the line loads correctly and feeds smoothly during use.
Pre-Work Safety and Old Line Removal
Start by prioritizing safety to avoid injury or damage to your tool. First, remove the battery from cordless models or unplug corded trimmers to eliminate any risk of accidental startup. Lay the trimmer on a flat, stable surface with the head facing up, and put on work gloves to protect your hands from sharp line ends. Wipe away any grass clippings or debris from the trimmer head with a dry rag to prevent dirt from entering the feed mechanism.
To remove the old line, locate the twist-release spool cap on the bottom of the trimmer head. Press down slightly on the cap while twisting it counter-clockwise to release it, then pull the old spool out of the head. For bump-feed models, you may need to pull the remaining old line out of the feed holes on the spool before removing it fully. Discard the old line by wrapping it in scrap paper to avoid injury from sharp ends.
Loading the New Trimmer Line
Properly loading the new line is the most critical step to ensure smooth feeding during use. First, check your user manual for the recommended line length for your model, usually 10 to 15 feet depending on the gauge. Cut the line to length with sharp scissors or a utility knife, making sure the ends are straight and free of frays to avoid jams.
Locate the winding direction arrow printed on the side of the line spool, which indicates whether to wind the line clockwise or counter-clockwise. Insert one end of the line into the feed hole on the spool, then wind the line neatly in the indicated direction, keeping it tight and evenly spaced without overlapping. For dual-line models, repeat this process with a second piece of line on the opposite side of the spool. Leave 6 to 8 inches of line sticking out of each feed hole, and do not overwind the spool, as excessive tension will prevent the line from feeding smoothly.
Reassembly and Final Testing
Once the line is loaded, insert the spool back into the trimmer head, aligning the line ends with the feed holes on the side of the head. Press the spool cap back into place, twisting it clockwise until it clicks to ensure it is fully secured. A loose cap can cause the spool to fall out during use, so double-check that it is tight before proceeding.
Reconnect the battery or power cord, then turn the trimmer on and let it run for 10 to 15 seconds to advance the line fully. For bump-feed models, tap the bottom of the head lightly on the ground 2 to 3 times to extend the line to the correct working length of 4 to 6 inches. Test the trimmer on a small patch of grass to confirm the line feeds smoothly and cuts effectively. If the line does not feed, turn off the trimmer, disassemble the head, and verify that you wound the line in the correct direction and left enough line protruding from the feed holes.
How to Adjust Line Feed for Optimal Performance
Most newer Dewalt weed eaters feature an adjustable line feed setting that lets you control how much line advances each time you tap the head for bump-feed models. Adjusting this setting correctly will reduce line waste and improve cutting performance for different types of vegetation. If you notice the line is advancing too quickly and wasting line during light trimming, turn the dial toward the ‘-’ setting to reduce waste. For heavy-duty jobs where you need consistent line length, the ‘+’ setting will ensure you have enough line to cut through thick vegetation without frequent tapping.
To adjust the line feed, locate the small dial or slider on the side of the trimmer head, usually marked with “+” and “-” symbols. Turn the dial clockwise (toward the “-” symbol) to reduce the amount of line that advances with each bump, which is ideal for light trimming of grass and small weeds where you only need a small amount of line. Turn the dial counter-clockwise (toward the “+” symbol) to increase the line advance, which is better for thick weeds and heavy brush where you need more line to cut effectively. (See Also:Why Does My Weed Eater Bog Down)
If your Dewalt model has an auto-feed mechanism instead of a bump-feed, the line will advance automatically as you cut, and no adjustment is needed. However, you may need to manually advance the line occasionally if it becomes too short during heavy use.
Comparison of Common Dewalt Weed Eater Wire Gauges and Lengths
Selecting the right wire gauge for your Dewalt model is critical for optimal performance. Use the table below to match the correct line to your trimmer and intended use case.
| Wire Gauge (Diameter) | Recommended Use Case | Compatible Dewalt Models | Typical Length Per Replacement Spool |
|---|---|---|---|
| 0.065″ (1.65 mm) | Light-duty trimming of grass and small, thin weeds | Dewalt 20V MAX DCMHT773, compact corded trimmers | 10 feet (3 meters) |
| 0.080″ (2.03 mm) | General-purpose use for medium grass, common weeds, and light brush | Most Dewalt 20V MAX, 40V MAX, and standard corded weed eaters | 12 feet (3.6 meters) |
| 0.095″ (2.41 mm) | Heavy-duty use for thick weeds, overgrown grass, and small woody brush | Dewalt 60V MAX, commercial-grade corded trimmers | 15 feet (4.5 meters) |
| 0.105″ (2.67 mm) | Extreme heavy-duty use for dense woody brush and thick, tough vegetation | Select Dewalt commercial-grade models only (check manual for compatibility) | 10 feet (3 meters) |
Tips and Best Practices for Extending Wire Life
With proper care and maintenance, you can extend the life of your replacement line and reduce how often you need to change it. Follow these best practices to get the most out of your trimmer line. Avoid using trimmer line that has been stored for more than 2 years, as older line becomes brittle and prone to breaking, even if it was stored properly.
- Always use the wire gauge recommended in your Dewalt weed eater’s user manual to avoid damaging the trimmer head or auto-feed mechanism. Using a line that is too thick or too thin will lead to poor performance and more frequent replacements.
- Store replacement line in a cool, dry place away from direct sunlight and extreme temperatures. Exposure to heat and UV light can cause the line to become brittle and break more easily during use.
- When trimming near hard surfaces like concrete, stone, fence posts, or tree trunks, keep the line at least 2 to 3 inches away from the surface. Impact with hard objects causes excessive wear and can fray or break the line prematurely.
- Clean the trimmer head and spool every 3 to 4 uses to remove grass clippings, dirt, and debris that can build up and cause the line to jam or feed unevenly. Use a dry rag to wipe away debris, and avoid using water to clean the electrical components of corded or cordless models.
- Wind the line neatly onto the spool without overlapping or crossing lines. Tangled line feeds poorly, wears out faster, and is more likely to jam in the feed mechanism.
- For bump-feed models, avoid tapping the head too hard on the ground when advancing the line. Light, quick taps are all that is needed to advance the line, and excessive force can damage the feed mechanism over time.
Common Mistakes to Avoid When Replacing Weed Eater Wire
Even experienced users can make simple errors when replacing trimmer line that lead to poor performance or damage to the tool. Avoid these common mistakes to make the replacement process as smooth as possible. Trying to force a spool into the trimmer head if it does not fit easily is another common mistake that can damage the spool or the head. Always ensure the spool is aligned correctly with the feed holes before pressing it into place.
- Winding the line in the wrong direction: Almost all Dewalt spools have a small arrow printed on the side that indicates the correct winding direction. Winding the line backwards will prevent it from feeding out properly, so always follow the arrow mark when loading the spool.
- Using the wrong wire gauge: A line that is too thick will not fit through the trimmer head’s feed holes and may jam the mechanism, while a line that is too thin will wear out quickly and cut poorly. Always verify the correct gauge for your model before purchasing replacement line.
- Overwinding the line: Packing too much line onto the spool creates excessive tension that prevents the line from feeding out smoothly. Wind the line until it is snug but not compressed, and always leave 6 to 8 inches of line sticking out of the feed holes.
- Skipping safety steps: Failing to disconnect the battery or unplug the trimmer before working on the head can lead to accidental startup and serious injury. Always power off the tool completely and remove the power source before starting any maintenance.
- Using frayed or damaged replacement line: Line with frayed ends or kinks will jam in the feed mechanism and cut unevenly. Always cut replacement line cleanly with sharp scissors or a utility knife to ensure straight, smooth edges that feed properly.
Frequently Asked Questions
How often should I change the wire on my Dewalt weed eater?
The frequency of line replacement depends on how often you use the trimmer and the type of vegetation you cut. For light, occasional use (once a month or less), you can replace the line every 3 to 6 months. For regular, heavy use (weekly or more, cutting thick weeds and brush), you may need to replace it every 1 to 2 months. You will know it is time to change the line when it becomes frayed, shorter than 2 to 3 inches, or stops feeding properly even after adjusting the line feed setting. (See Also:What Is The Lightest Battery Operated Weed Eater 2)
Why is my new line not feeding after replacement?
The most common causes of feeding issues are winding the line in the wrong direction, overwinding the spool, or not leaving enough line sticking out of the feed holes. First, check that you wound the line in the direction indicated by the arrow on the spool. Then, disassemble the head and make sure you only wound the line snugly (not tightly) and left 6 to 8 inches of line protruding from each feed hole. If the problem persists, check for debris jamming the feed mechanism inside the trimmer head.
How do I know what gauge wire to use for my Dewalt weed eater?
The correct wire gauge is listed in your Dewalt weed eater’s user manual, which you can find in the original packaging or on Dewalt’s official website by entering your model number. Most standard Dewalt 20V MAX trimmers use 0.080″ line, while heavier-duty 60V MAX models use 0.095″ line. If you cannot find your manual, you can also check the label on the bottom of the trimmer head, which usually lists the recommended line size.
Conclusion
Knowing how to change wire on Dewalt weed eater is a simple, valuable skill that will save you time and money while keeping your trimmer in top working condition. By following the step-by-step guide outlined in this article, selecting the correct line for your model, and avoiding common mistakes, you can complete the replacement in minutes without any professional help. Regular line maintenance will improve your trimmer’s cutting performance, extend its overall lifespan, and make yard work faster and easier. If you run into any issues during the process, refer back to the troubleshooting tips and FAQ section for quick solutions. With proper care, your Dewalt weed eater will remain a reliable tool for all your yard maintenance needs for years to come.