Introduction
Replacing the cutting line on a Dewalt weed eater is a routine maintenance task that keeps the tool performing at its best. Whether you own a cordless 20V model or a gas‑powered unit, the process of loading fresh string onto the spool follows the same basic principles. This guide walks you through every step, explains the different spool designs, and offers practical tips so you can complete the job quickly and safely. By the end you will know exactly how to put string on Dewalt weed eater equipment without frustration.
- Understanding Your Dewalt Weed Eater
- Tools and Materials Needed
- Safety Precautions
- Step‑by‑Step Guide: How to Put String on Dewalt Weed Eater
- Spool Loading Methods Comparison
- Tips for Optimal Performance
- Common Mistakes and How to Avoid Them
- Troubleshooting Line Feeding Issues
- Maintenance and Storage
- Frequently Asked Questions
- Conclusion
Understanding Your Dewalt Weed Eater
Model Variations
Dewalt offers several trimmer families, including the 20V MAX XR cordless series, the 60V MAX FlexVolt line, and a few gas‑powered models. Each family uses a slightly different spool housing, but the core concept— a rotating spool that feeds line through an eyelet— remains identical. Identifying your exact model number (usually found on a label near the motor housing) helps you purchase the correct replacement line diameter and spool type.
Spool Types
Two main spool designs appear on Dewalt trimmers: the bump‑feed spool and the fixed‑line spool. Bump‑feed spools release additional line when you tap the head on the ground, while fixed‑line spools require manual re‑threading after each line break. Most current cordless models ship with a bump‑feed head, which is easier to reload because the spool can be removed without tools. Gas models sometimes use a fixed‑line head that may need a screwdriver to open.
Tools and Materials Needed
Gather the following items before you begin:
- Replacement trimmer line (typically .080‑inch or .095‑inch diameter for Dewalt units)
- Scissors or a sharp utility knife
- Clean rag or shop towel
- Protective gloves
- Safety glasses
- Small flat‑head screwdriver (only for fixed‑line heads)
Having the correct line diameter is critical; using a line that is too thick can jam the feed mechanism, while a line that is too thin may break prematurely.
Safety Precautions
Before touching any moving parts, ensure the trimmer is completely powered down. For cordless models, remove the battery pack. For gas models, disconnect the spark plug wire and allow the engine to cool. Wear safety glasses to protect your eyes from any stray line fragments, and gloves to avoid cuts from the sharp line ends. Keep the work area clear of bystanders, especially children and pets.
Step‑by‑Step Guide: How to Put String on Dewalt Weed Eater
- Remove the spool. Press the release tabs on the bump‑feed head and pull the spool straight out. On fixed‑line heads, unscrew the retaining knob or remove the screws with the flat‑head screwdriver, then lift the spool free.
- Clean the spool and housing. Wipe away grass clippings, dirt, and old line debris with a clean rag. A clean spool ensures smooth line feeding and prevents premature wear.
- Cut the new line to length. Most Dewalt spools require two equal lengths of line, each about 10‑12 feet long. Measure and cut both pieces with scissors or a utility knife. Cutting a clean, straight end helps the line seat properly in the anchor holes.
- Anchor the line. Locate the small anchor holes or slots on the spool core. Insert one end of each line piece into the designated holes, pulling until a short tail (about 1‑2 inches) remains inside the spool. Some spools have a single anchor slot for a folded line; in that case, fold the line in half and insert the loop.
- Wind the line evenly. Hold the spool steady and wind each line in the direction indicated by the arrow on the spool (usually clockwise). Keep tension consistent so the line lays flat without overlapping. Fill the spool until the line sits just below the outer flange— overfilling can cause binding.
- Secure the line ends. Tuck the free ends into the retaining notches or slots on the spool rim. This prevents the line from unspooling during operation.
- Reinstall the spool. Align the spool with the head housing and push it back until the release tabs click (bump‑feed) or tighten the retaining knob/screws (fixed‑line). Verify that the spool rotates freely by hand.
- Test the feed. Reattach the battery or reconnect the spark plug wire. Start the trimmer and gently tap the head on grass to confirm that line feeds out smoothly. Adjust if necessary.
Spool Loading Methods Comparison
| Method | Pros | Cons |
|---|---|---|
| Bump‑Feed (Tool‑Free) | Quick reload, no tools required, line feeds automatically | Can over‑feed if tapped too aggressively |
| Fixed‑Line (Manual) | Precise line length control, less chance of accidental feed | Requires screwdriver, slower reload |
| Pre‑Wound Spools | Eliminates winding errors, ready to install | Higher cost, limited line diameter options |
| Dual‑Line Bump‑Feed | Two cutting edges for faster trimming | Uses more line, slightly heavier head |
Tips for Optimal Performance
- Use the line diameter recommended in the owner’s manual; Dewalt typically specifies .080‑inch for 20V models and .095‑inch for 60V models.
- Store replacement line in a cool, dry place to prevent brittleness.
- Wind the line tightly but not so tight that it stretches; stretched line loses cutting efficiency.
- Periodically inspect the spool eyelet for wear; a worn eyelet can cause uneven feed.
- When trimming thick weeds, use a slower tap rhythm to avoid line breakage.
- Keep the trimmer head clean; grass buildup can impede the bump mechanism.
Common Mistakes and How to Avoid Them
- Overfilling the spool. Excess line creates friction and can jam the feed. Stop winding when the line reaches the flange.
- Using the wrong line diameter. Too thick a line stalls the motor; too thin a line snaps. Verify the spec before purchase.
- Winding in the wrong direction. The arrow on the spool indicates the correct winding direction; reversing it causes the line to unwind during operation.
- Neglecting to secure line ends. Loose ends unravel and tangle. Always tuck them into the retaining slots.
- Forgetting to remove the battery. Accidental start‑up can cause injury. Always disconnect power before servicing.
Troubleshooting Line Feeding Issues
If the line does not advance when you tap the head, first check that the spool is seated correctly and rotates freely. Next, verify that the line is not tangled inside the spool; remove and re‑wind if necessary. Inspect the eyelet for cracks or excessive wear— a damaged eyelet will snag the line. On bump‑feed models, ensure the bump knob moves up and down without binding; lubricate the spring lightly with a silicone spray if it feels stiff. For fixed‑line heads, confirm that the retaining knob is tight enough to keep the spool from wobbling but not so tight that it prevents rotation.
Maintenance and Storage
Regular maintenance extends the life of both the trimmer and the cutting line. After each use, brush off grass clippings from the head and spool. Every few months, apply a light coat of silicone lubricant to the bump‑feed spring and the spool shaft. Store the trimmer in a dry, temperature‑controlled environment; extreme heat can degrade the line, while moisture can cause rust on metal components. If you plan to store the tool for an extended period, remove the battery and keep the spool partially wound to relieve tension on the spring.
Frequently Asked Questions
What line diameter should I use for my Dewalt weed eater?
Most 20V MAX models use .080‑inch line, while 60V MAX FlexVolt units typically require .095‑inch line. Always check the specification label on your trimmer or the owner’s manual for the exact size.
Can I use any brand of trimmer line?
Yes, as long as the diameter matches the manufacturer’s recommendation and the line is designed for bump‑feed or fixed‑line heads. Premium lines with reinforced cores often last longer.
How often should I replace the cutting line?
Replace the line whenever it becomes frayed, shortened to less than half its original length, or when cutting performance noticeably declines. Heavy use may require replacement every few hours of operation.
Why does the line keep breaking near the eyelet?
Frequent breakage at the eyelet usually indicates a worn or sharp edge on the eyelet, incorrect line diameter, or excessive tapping force. Inspect the eyelet and smooth any burrs with fine sandpaper.
Can I reload a pre‑wound spool instead of winding myself?
Absolutely. Pre‑wound spools are a convenient alternative; just ensure the spool matches your model’s part number and line diameter.
Conclusion
Loading fresh string onto a Dewalt weed eater is a straightforward task once you understand the spool type, use the correct line diameter, and follow the proper winding direction. By preparing the right tools, observing safety precautions, and applying the step‑by‑step method outlined above, you can keep your trimmer cutting cleanly and efficiently. Regular inspection of the spool, eyelet, and bump mechanism prevents common feeding problems and extends the life of both the line and the tool. With these practices in place, you will spend less time troubleshooting and more time enjoying a well‑trimmed lawn.