How To String A Weed Eater With Two Holes
If you have a weed eater head with two holes (sometimes called a dual-eyelet or twin-hole trimmer head), restringing it can feel confusing the first time. I remember my first time staring at that spool wondering which way the line should go. After a few tries and a couple of ruined spools, I figured out a reliable method that works every time. This guide will walk you through the entire process step-by-step, explain the tools and materials you need, and help you troubleshoot common problems so you get back to trimming quickly.
Why Some Trimmer Heads Have Two Holes
Dual-hole heads use two separate pieces of line that feed out simultaneously. They can provide a balanced cut and a wider swath, which is great for tackling thicker grass and light brush. The two holes keep the lines paired and reduce wobble compared to single-line heads in some setups.
What You’ll Need
- Replacement trimmer line (check diameter recommended by your trimmer; common sizes are 0.065″, 0.080″, or 0.095″)
- Your weed eater/strimmer and its head removed or accessible
- Scissors or a sharp knife
- Gloves (optional but handy for grip and protection)
Preparing the Trimmer Head
Start by turning off the engine or removing the battery. Safety first. Remove the spool or faceplate according to your model’s instructions. On most heads you press tabs or unscrew a cap. Keep track of any springs or small parts.
Inspect the Spool
Look for arrows on the spool indicating the winding direction. Many spools are labeled, but if not, you can usually determine the winding direction by the way the line lays naturally when you curve it from the outer edge toward the center.
Step-by-Step: Stringing the Two Holes
Here’s the reliable method I use on every dual-hole head in my shed:
- Cut two equal lengths of line. A good starting length is about 8 to 10 feet each, but check your trimmer’s manual—some heads need more or less. If you use too much line it can jam; too little and you’ll have a short reach.
- Find the anchor points on the spool. Most spools have small notches or holes where you can tuck the line ends to keep them from unspooling while you wind.
- Feed one end of the first line into one of the eyelet holes on the spool. Pull it through until there’s an even length outside the hole if your spool wants equal tails. If your spool requires one tail shorter (rare), follow the manual.
- Repeat for the second line into the other hole. Work patiently so the two lines don’t tangle.
- Begin winding each piece of line onto the spool in the direction indicated by the arrow. If there’s no arrow, wind so the line coils inward toward the center of the spool. Keep the coils tight and neat, layering evenly. On some spools you wind both lines separately in each half of the spool; others wind together in the same groove but remain in separate notches at the eyelets.
- When you have about 6 inches of line left on each side, secure the ends in the notches to hold them while you replace the spool cap.
- Reassemble the head. Slide the spool back into the housing, thread the line ends through the eyelet holes on the head, and snap or screw the cap back in place. Pull the lines gently to release them from the notches so they extend freely.
Tips From My Experience
I’ve learned a few tricks the hard way. Here are the ones that save me time:
- Always wind tautly and neatly. Messy winding causes jams and uneven feed.
- Use the correct line diameter. Thinner line is easier to wind but wears faster; thicker line cuts tougher vegetation but needs more power.
- If your trimmer is bump-feed, leave the line a tiny bit longer than you think you need so the bump mechanism can catch it.
- Label spare spools. I keep pre-wound spools labeled with line diameter and length—saves a lot of time during mowing season.
Common Problems and How to Fix Them
Line Keeps Breaking Immediately
Check that you’re using the recommended diameter and that the line isn’t old and brittle. Also confirm you’re not hitting hard surfaces like rocks or curbs repeatedly; that will shear even the best line.
Line Does Not Feed
Often the spool wasn’t seated correctly or the line is snagged in the housing. Remove the cap and inspect for tangles. Make sure the line is threaded through the head eyelets properly and that the bump-feed spring (if present) is seated.
Uneven Line Lengths
This usually happens when one line is shorter on the spool or one side wound tighter. Remove and rewind if necessary, keeping tension equal on both lines while winding.
“Once you get the rhythm of winding the two lines neatly and locking them in place, restringing a dual-hole head becomes quicker than you’d think. It’s like threading a sewing machine—awkward at first, then muscle memory takes over.” — Your neighborhood gardener
When To Replace the Spool or Head
Inspect the spool for cracks, excessive wear in the grooves, or broken tabs. A damaged spool can cause feeding issues and should be replaced. If your head is bent or lets the line slip, invest in a new head compatible with your trimmer. They’re inexpensive and make life easier.
Final Thoughts
Stringing a weed eater with two holes is straightforward once you know the steps. Gentle practice, the right line, and keeping everything neat are the keys. I prefer dual-line setups for the balance and coverage they provide—just remember, patience while winding pays off with fewer mid-job frustrations. Happy trimming—and don’t forget to wear eye protection!
