How Do You String a Dewalt Weed Eater? Line Setup

Introduction

Restringing a Dewalt weed eater is a routine maintenance task that keeps your trimmer cutting cleanly and efficiently. Whether you are a seasoned landscaper or a weekend gardener, knowing how to replace the line correctly saves time, reduces frustration, and extends the life of the tool. This guide walks you through everything you need to know, from selecting the right trimmer line to a detailed step‑by‑step process, common pitfalls, and pro tips for a longer‑lasting setup. By the end you will be able to answer the question How Do You String a Dewalt Weed Eater? with confidence and get back to trimming in minutes.

• Understanding Your Dewalt Weed Eater
• Types of Trimmer Line Compatible with Dewalt
• Preparing for Restringing
• Step‑by‑Step Guide to String a Dewalt Weed Eater
• Common Mistakes When Restringing
• Tips and Best Practices for Long‑Lasting Line
• Comparison Table: Dewalt Line vs. Generic Line
• Troubleshooting Line Feed Issues
• Frequently Asked Questions
• Conclusion

Understanding Your Dewalt Weed Eater

Dewalt offers several string trimmer models, including the 20V MAX XR brushless, the 60V MAX FlexVolt, and the corded 13‑amp units. While the power source differs, the line‑loading mechanism is largely the same across the lineup: a bump‑feed head that releases new line when you tap the head on the ground. Knowing your specific model number (usually found on a label near the motor housing) helps you verify the correct line diameter and head type. Most Dewalt heads accept a dual‑line configuration, meaning two strands of line are wound onto the spool in opposite directions. This design provides a balanced cut and reduces vibration.

Before you begin, check the owner’s manual for the recommended line diameter—typically 0.080 in., 0.095 in., or 0.105 in.—and the maximum line length the spool can hold. Using a line that is too thick can jam the feed mechanism, while a line that is too thin may break prematurely under heavy loads. Also note whether your model uses a fixed‑line head (pre‑cut lengths) or a bump‑feed head (continuous spool). The instructions below assume a standard bump‑feed head, which is the most common on Dewalt trimmers.

Types of Trimmer Line Compatible with Dewalt

Trimmer line comes in several shapes and materials, each suited to different cutting conditions. Round line is the most common and works well for general grass and light weeds. Twisted or serrated line adds cutting edges that slice through thicker stems and brush more cleanly. Square or star‑shaped line offers the most aggressive cutting action, ideal for dense overgrowth, but it wears faster and can increase vibration. Dewalt’s own branded line is engineered to match the feed geometry of their heads, but many high‑quality aftermarket lines perform equally well if they meet the diameter specification.

When shopping, look for line labeled “commercial grade” or “professional” if you tackle large areas regularly. These lines use a higher‑density nylon copolymer that resists abrasion and UV degradation. For occasional residential use, a standard residential‑grade line is sufficient and more economical. Always verify the diameter on the packaging matches the specification for your model; a mismatch is the leading cause of feed problems.

Choosing the Right Line Diameter

The line diameter directly influences cutting power and feed reliability. A 0.080 in. line is light and feeds easily, making it a good choice for small yards and fine grass. The 0.095 in. diameter strikes a balance between durability and feed smoothness, and it is the most popular size for Dewalt’s 20V and 60V models. The heavier 0.105 in. line provides maximum cutting force for thick weeds and light brush, but it requires a more powerful motor and a head designed for the larger cross‑section. If you are unsure, start with the manufacturer’s recommended size—usually printed on the spool housing—and adjust based on performance.

Preparing for Restringing

Gather the following items before you start: a new spool of the correct line, a pair of scissors or a line cutter, a clean rag, and optionally a small brush to clear debris from the head. Work on a flat, stable surface with good lighting. Disconnect the battery (or unplug the cord) to eliminate any chance of accidental startup. Remove the trimmer head by pressing the release tabs or unscrewing the retaining knob, depending on your model. Once the head is off, inspect the spool for cracks, worn notches, or built‑up grass clippings. Clean the spool and the head housing with the rag and brush; any debris left inside can interfere with line feeding later. (See Also:How To Refill A Bump Head Weed Eater)

If your head uses a removable spool, take it out completely. Some Dewalt models have a fixed spool that stays in the head; in that case you will wind the new line directly onto the spool while it remains in the housing. Check the directional arrows molded into the spool—they indicate the winding direction for each line channel. Winding opposite to the arrows will cause the line to feed backward and jam.

Step‑by‑Step Guide to String a Dewalt Weed Eater

Follow these steps carefully to restring your Dewalt trimmer. The process is the same whether you are loading a fresh spool or refilling an existing one.

1. Cut the line to length. Pull the line from the bulk spool and cut two equal lengths, typically 10–12 feet each for a standard bump‑feed head. Longer lengths give more cutting time before the next reload.
2. Insert the first line. Locate the anchor hole or notch on the spool marked for the first line (often labeled “A” or indicated by an arrow). Feed one end of the first line into the anchor, then wind the line neatly in the direction of the arrow, keeping tension even and layers tight. Stop when the spool is about three‑quarters full, leaving a short tail (about 6 inches) protruding.
3. Insert the second line. Find the second anchor (usually opposite the first, labeled “B”). Feed the second line into its anchor and wind in the direction of its arrow—this is typically opposite to the first line’s winding direction. Fill to the same level, leaving a matching tail.
4. Secure the tails. Most Dewalt heads have small slots or tabs near the outer edge of the spool. Slip each tail into its corresponding slot to hold the line in place while you reassemble the head.
5. Reinstall the spool. Place the spool back into the head housing, aligning any guide pins or notches. Ensure the tails exit through the eyelets on the head cover.
6. Replace the head cover. Snap or screw the cover back on, making sure it seats evenly. The cover should click into place without forcing.
7. Reattach the head to the trimmer. Slide the head onto the drive shaft, engage the locking tabs or tighten the retaining knob, and give it a gentle tug to confirm it is secure.
8. Reconnect power. Insert the battery or plug in the cord. Start the trimmer and let it run for a few seconds, then tap the head lightly on the grass to advance the line. Verify that both lines feed evenly and cut cleanly.

Common Mistakes When Restringing

Even experienced users can slip up. Here are the most frequent errors and how to avoid them:

• Winding the wrong direction. Ignoring the arrows on the spool causes the line to feed backward, leading to jams. Always double‑check the winding direction for each channel.
• Overfilling the spool. Packing too much line prevents the bump‑feed mechanism from releasing new line. Leave a small gap (about 1/8 inch) between the wound line and the spool’s outer flange.
• Using mismatched diameters. Mixing a 0.080 in. line with a 0.095 in. line creates uneven tension and erratic feed. Use the same diameter for both channels.
• Leaving tails too long. Excess tail length can snag on the head cover or get caught in the feed eyelets, causing the line to break. Trim tails to the recommended 6 inches.
• Forgetting to clean the head. Grass clippings and dirt act like sandpaper on the line and feed mechanism. A quick brush‑out before each restring extends line life.
• Not securing the spool properly. A loose spool wobbles during operation, which can cause the line to unwind unevenly or the head to detach. Ensure the retaining knob or tabs are fully engaged.

Tips and Best Practices for Long‑Lasting Line

Implement these habits to get the most cutting time out of each spool:

• Match line to the job. Use round line for lawns, twisted line for mixed grass and weeds, and square/star line only when tackling heavy brush.
• Store line in a cool, dry place. UV exposure and moisture degrade nylon, making it brittle. Keep bulk spools in a sealed container.
• Tap gently. A light tap on the grass is enough to advance the line. Aggressive pounding wears the bump‑feed spring and can damage the head.
• Inspect the feed eyelets regularly. Sharp edges or burrs on the eyelets cut the line prematurely. Smooth them with a fine file if needed.
• Rotate the spool occasionally. If you notice one side wearing faster, flip the spool (if the head design allows) to even out wear.
• Keep the motor vents clear. Overheating reduces motor torque, which can cause the line to stall and break. Clean vents after each use.

Comparison Table: Dewalt Line vs. Generic Line

Troubleshooting Line Feed Issues

If the line does not advance when you tap the head, run through this quick checklist:

• Check line tension. Over‑tight winding can bind the spool. Unwind a few turns and re‑wind with moderate tension.
• Inspect the bump‑feed spring. A worn or broken spring will not push the spool forward. Replace the spring if it feels weak or shows corrosion.
• Verify eyelet alignment. The line must pass cleanly through the eyelets without rubbing on the head cover. Adjust the cover if necessary.
• Confirm correct line diameter. A line that is too thick for the head’s feed slots will stall. Switch to the recommended size.
• Clean the head interior. Built‑up grass can jam the spool rotation. Disassemble and brush out debris.
• Test with a fresh spool. If problems persist, the spool itself may be cracked or warped. Replace the spool assembly.

Frequently Asked Questions

How often should I restring my Dewalt weed eater?

Restring whenever the line becomes too short to cut effectively—typically after 30–60 minutes of continuous heavy use. Light residential trimming may only require a reload every few sessions. (See Also:What Is The Easiest Weed Eater To Use)

Can I use a single‑line setup instead of dual line?

Most Dewalt bump‑feed heads are designed for dual line. Running a single line can cause imbalance, increased vibration, and uneven wear on the head. Stick with the dual‑line configuration for best performance.

What line diameter does my Dewalt 20V MAX XR take?

The 20V MAX XR models generally accept 0.080 in. or 0.095 in. line. Check the label on the spool housing or the owner’s manual for the exact specification for your specific model.

Why does my line keep breaking at the eyelet?

Sharp or burred eyelets cut the line as it feeds. Remove the head cover, inspect the eyelets, and smooth any rough edges with a fine file. Also ensure you are not using a line diameter larger than the eyelet’s design.

Is it okay to use a pre‑cut line pack instead of bulk spool?

Yes, pre‑cut packs are convenient and guarantee the correct length. Just make sure the pack matches the diameter and length recommended for your head. They are ideal for quick reloads on the job site. (See Also:How To Feed Line Into A Weed Eater)

Conclusion

Restringing a Dewalt weed eater is a straightforward process once you understand the head design, choose the correct line diameter, and follow a consistent winding technique. By preparing the work area, cleaning the head, and winding each line in the proper direction, you avoid the most common feed problems and extend the life of both the line and the trimmer. Regular inspection of the bump‑feed spring, eyelets, and spool condition further ensures reliable operation. Whether you are tackling a small backyard or a large commercial property, mastering this skill keeps your equipment ready and your lawn looking sharp. The next time you ask yourself How Do You String a Dewalt Weed Eater? you’ll have the knowledge and confidence to do it quickly and correctly.