How to Change Worx Weed Eater String? Simple Step-by-Step Guide

Introduction

Changing the cutting line on a Worx weed eater is a routine maintenance task that keeps your trimmer running efficiently and your lawn looking sharp. Whether you own a battery‑powered Worx GT Revolution, a corded Worx WG163, or any other model in the lineup, the basic process is similar: remove the spent spool, load fresh line, and re‑assemble the head. This guide walks you through every detail of How to Change Worx Weed Eater String? so you can complete the job quickly, safely, and with confidence.

We’ll cover the different spool designs Worx uses, the tools you’ll need, safety precautions, a full step‑by‑step procedure, line‑type compatibility, a comparison of original versus aftermarket spools, tips for extending line life, common mistakes, troubleshooting advice, a simple maintenance schedule, and answers to the most frequently asked questions. By the end of this article you’ll have all the knowledge required to keep your trimmer cutting cleanly all season long.

• Understanding Your Worx Weed Eater
• Tools and Materials Needed
• Safety Precautions
• Step‑by‑Step Guide to Change String
• Common String Types and Compatibility
• Comparison Table: Worx Spool vs Aftermarket Spools
• Tips for Longer Line Life
• Common Mistakes and How to Avoid Them
• Troubleshooting After Replacement
• Maintenance Schedule
• Frequently Asked Questions
• Conclusion

Understanding Your Worx Weed Eater

Worx offers a variety of string trimmers, each with a slightly different head design. Knowing which style you have helps you purchase the correct replacement line and follow the right disassembly steps.

Types of Worx Trimmers

The most common Worx models fall into three categories:

• Bump‑feed heads – Found on many GT Revolution and WG163 units. You tap the head on the ground to advance line.
• Fixed‑line heads – Used on some older Worx models where the line is pre‑cut to a set length and does not advance automatically.
• Rapid‑reload spools – Newer designs that allow you to drop a pre‑wound spool into the housing without threading line manually.

Check the model number on the motor housing or the owner’s manual to identify your head type. The model number also tells you the recommended line diameter, typically 0.065 in, 0.080 in, or 0.095 in.

Spool Design and Line Path

All Worx spools share a central hub with two opposing eyelets that guide the line out of the head. The line winds around the hub in a specific direction—usually indicated by an arrow molded into the spool. Winding the line opposite to the arrow causes feeding problems and premature wear. The spool may be a single piece (integrated hub and line) or a two‑piece design where the hub separates from the line cartridge. Understanding this layout before you start prevents frustration during re‑assembly.

Tools and Materials Needed

Gather the following items before you begin. Having everything at hand reduces the chance of interrupting the job to search for a missing tool.

• Replacement trimmer line (correct diameter and length for your model)
• New spool or spool cartridge if your head uses a replaceable cartridge
• Work gloves – protect hands from sharp line ends
• Safety glasses – shield eyes from debris
• Flat‑head screwdriver or the supplied release tool (some models include a plastic key)
• Clean rag – wipe dust and grass clippings from the head
• Optional: small needle‑nose pliers for stubborn line ends

If you own a rapid‑reload model, you only need the pre‑wound spool cartridge; no loose line is required.

Safety Precautions

Trimmer line spins at high speed and can cause serious injury. Follow these safety rules every time you service the head:

1. Disconnect the power source. For battery models, remove the battery pack. For corded units, unplug the extension cord.
2. Allow the motor to cool completely if it has been running.
3. Wear gloves and safety glasses at all times.
4. Work on a stable, flat surface—preferably a workbench or the ground with a protective mat.
5. Keep the trimmer pointed away from yourself and others while you manipulate the head.

Never attempt to change the line while the tool is powered or the battery is installed. A sudden trigger press can spin the head and cause lacerations.

Step‑by‑Step Guide to Change String

The following procedure applies to the majority of bump‑feed Worx heads. If you have a rapid‑reload cartridge, skip steps 4‑7 and simply insert the new cartridge according to the manufacturer’s diagram.

1. Remove the battery or unplug the cord. Confirm the power indicator is off.
2. Lay the trimmer on its side with the head facing up. This gives you clear access to the spool release button.
3. Press the spool release latch. Most Worx heads have a tab on the side of the housing. Depress it while gently pulling the spool assembly straight out.
4. Separate the spool halves (if applicable). Hold the hub steady and twist the outer cover counter‑clockwise until it releases. Set the cover aside.
5. Discard the old line. Pull any remaining line from the eyelets. Use needle‑nose pliers if the line is stuck.
6. Cut the new line to length. Consult the manual for the exact length—typically 10‑12 ft for a 0.080 in line. Cut two equal pieces if your spool uses a dual‑line feed.
7. Thread the line through the eyelets. Insert one end of each line piece into the corresponding eyelet, following the direction arrow on the spool. Pull the line through until a few inches remain on each side.
8. Wind the line onto the hub. Turn the hub in the direction of the arrow (usually clockwise) while keeping tension on the line. Keep the wraps neat and side‑by‑side; overlapping causes jams.
9. Leave the correct tail length. Stop winding when about 4‑6 inches of line remain protruding from each eyelet. This tail feeds the bump mechanism.
10. Re‑assemble the spool. Align the cover with the hub, press down, and twist clockwise until it clicks into place.
11. Re‑insert the spool into the head housing. Push until the release latch snaps securely.
12. Re‑attach the battery or plug in the cord. Test the trimmer by briefly squeezing the trigger. Tap the head lightly on grass to verify line advance.

If the line does not feed, double‑check the winding direction and tail length. A quick re‑wind often solves the issue.

Common String Types and Compatibility

Choosing the right line diameter and profile affects cutting performance and line longevity. Worx typically recommends the following:

• 0.065 in round line – Light‑duty trimming, ideal for thin grass and edging.
• 0.080 in round line – General purpose; balances durability and cutting speed for most residential lawns.
• 0.095 in round or twisted line – Heavy‑duty brush and thick weeds; higher drag reduces motor runtime on battery models.
• Square or star‑shaped line – Aggressive cutting edges; faster wear but cleaner cuts on tough vegetation.

Always match the line diameter to the spec printed on the spool housing. Using a thicker line than specified can overload the motor, while a thinner line may break excessively.

Comparison Table: Worx Spool vs Aftermarket Spools

If you prioritize reliability and warranty protection, genuine spools are the safest choice. Budget‑conscious users often find reputable aftermarket brands that perform equally well.

Tips for Longer Line Life

• Keep the cutting height appropriate. Cutting too low forces the line into soil and rocks, accelerating wear.
• Avoid hard surfaces. Pavement, curbs, and stones shred line quickly.
• Use the correct line diameter. Over‑size line increases drag and heat, causing premature breakage.
• Store the trimmer indoors. UV exposure makes line brittle over time.
• Clean the head after each use. Grass buildup traps moisture and promotes line degradation.
• Wind line evenly. Neat, tight wraps prevent overlapping that leads to jams and uneven feed.

Implementing these habits can double the usable life of a single spool.

Common Mistakes and How to Avoid Them

• Winding line opposite the arrow. This reverses the feed direction, causing the line to retract instead of advance. Always follow the molded arrow.
• Leaving tails too short. If the protruding ends are under 3 inches, the bump mechanism cannot grab enough line to feed. Keep 4‑6 inches.
• Over‑filling the spool. Packing too much line creates friction and prevents smooth rotation. Stop winding when the spool is about 80 % full.
• Using the wrong diameter. A 0.095 in line in a 0.080 in head stresses the motor and may cause the head to jam.
• Forgetting to disconnect power. This is a safety hazard and can damage the motor if the trigger is accidentally pressed.
• Neglecting to clean the eyelets. Debris in the eyelets blocks line movement. Wipe them clean before re‑threading.

Awareness of these pitfalls saves time and prevents repeat work.

Troubleshooting After Replacement

Even with careful installation, issues can arise. Here are the most common symptoms and quick fixes:

• Line does not advance when bumped. Verify winding direction, tail length, and that the spool rotates freely. Clean any grass clippings from the bump knob.
• Line breaks immediately. Check for sharp edges on the eyelets or hub. Lightly file any burrs. Ensure you are not using line that is too thin for the job.
• Excessive vibration. Uneven line winding causes imbalance. Re‑wind with consistent tension.
• Motor stalls under load. Line diameter may be too large for the motor’s torque rating. Switch to the recommended size.
• Spool falls out during operation. The release latch may be worn. Inspect the latch spring and replace the head housing if necessary.

If problems persist after these checks, consult the Worx service center or the user manual for model‑specific diagnostics.

Maintenance Schedule

A simple routine keeps your Worx trimmer performing at its best:

Adjust the schedule based on how frequently you trim and the toughness of the vegetation.

Frequently Asked Questions

How often should I change the string on my Worx weed eater?

For typical residential use, expect to replace the line every 5‑10 hours of cutting. Heavy brush or frequent edging shortens that interval. Visual inspection after each session is the best gauge.

Can I use any brand of trimmer line with my Worx trimmer?

Yes, as long as the line diameter matches the specification on your spool housing. Quality varies, so choose a reputable brand to avoid excessive breakage.

Why won’t the line feed after I bump the head?

Common causes include winding the line in the wrong direction, tails that are too short, or debris blocking the eyelets. Re‑wind following the arrow and ensure 4‑6 inch tails.

What is the difference between round and twisted line?

Round line offers smooth feeding and longer life. Twisted or shaped line cuts more aggressively but wears faster and can increase motor load.

Do I need to replace the entire spool or just the line?

If the spool hub and cover are intact, you can simply re‑wind new line. Replace the whole spool if the hub is cracked, the eyelets are damaged, or the bump mechanism fails.

How do I know which line diameter to buy?

Look at the label on the spool housing or the owner’s manual. Common sizes are 0.065 in, 0.080 in, and 0.095 in. Match the number exactly.

Can I use a pre‑wound spool cartridge instead of winding my own line?

Yes, if your model supports rapid‑reload cartridges. They save time and guarantee correct winding direction, but they cost slightly more per foot of line.

Conclusion

Mastering How to Change Worx Weed Eater String? is a straightforward skill that pays off in cleaner cuts, longer tool life, and fewer interruptions during yard work. By identifying your specific head type, gathering the right tools, observing safety rules, and following the detailed step‑by‑step process outlined above, you can swap line in minutes. Remember to select the correct line diameter, wind in the proper direction, and leave adequate tail length for reliable feeding. Regular maintenance—cleaning the head, inspecting for wear, and adhering to a simple schedule—will keep your Worx trimmer ready for every season. With these practices in place, you’ll spend less time fussing with line and more time enjoying a well‑manicured lawn.