To load line on a weedeater, first identify your head type (bump-feed or fixed-line), select the correct line gauge for your trimmer, remove the spool or head cover, wind the line in the direction of rotation (usually clockwise), thread it through the eyelets, and reassemble. For bump-feed heads, wind evenly on the spool; for fixed-line heads, cut individual lengths and insert through designated slots.
Whether you call it a weedeater, string trimmer, or weed whacker, getting fresh line loaded correctly is essential for clean, efficient cutting. Loading trimmer line is a straightforward process, but the exact steps depend on the type of trimmer head you have. This guide walks you through identifying your head type, selecting the right line, and loading it properly so your trimmer feeds smoothly and cuts effectively.
Identify Your Trimmer Head Type
Before you can load line, you need to know what kind of trimmer head you’re working with. The two primary types are bump-feed heads and fixed-line (or quick-load) heads, and each requires a different loading method.
Bump-Feed Heads
Bump-feed heads are the most common type found on string trimmers. They feature a spool that holds a continuous length of line wound inside the head. To advance line during use, you tap (or “bump”) the head against the ground while the trimmer is running, which releases more line from the spool. These heads typically have a rounded bump knob on the bottom and one or two eyelets where the line exits.
Fixed-Line or Quick-Load Heads
Fixed-line heads don’t use a wound spool. Instead, you cut individual pieces of line and insert them through slots or channels in the head. Quick-load heads are a variation that may allow you to insert line and wind it by turning the head, combining some convenience of both designs. These heads often have visible slots or holes where pre-cut line segments are secured.
To determine which type you have, look at the bottom of your trimmer head. If there’s a bump knob you can press and a spool inside, you have a bump-feed head. If you see slots or channels where individual line pieces are inserted, you have a fixed-line head. Keep in mind that “Weedeater” is a brand name commonly used as a generic term for all string trimmers, and loading instructions can vary by manufacturer and model. When in doubt, consult your owner’s manual for model-specific details.
Select the Correct Line Gauge and Length
Choosing the right trimmer line is critical for proper feeding and cutting performance. Line gauge refers to the diameter of the line, and it must match the specifications of your trimmer head.
Determining the Right Line Gauge
The correct line gauge for your trimmer is typically printed on the trimmer head itself, listed in the owner’s manual, or sometimes indicated on the trimmer’s housing. Common line gauges include 0.065 inches, 0.080 inches, and 0.095 inches, but the correct size depends entirely on your specific trimmer head. Using a line that’s too thick can cause feeding problems, strain the trimmer’s motor, or damage the head. Using line that’s too thin may result in poor cutting performance and frequent breakage.
Line Length Considerations
For bump-feed heads, you’ll typically need a single long piece of line. A common length is around 20 to 30 feet, but this varies based on the spool capacity. For fixed-line heads, you’ll need multiple shorter pieces, often around 8 to 12 inches per side, though this depends on the head design and the diameter of the trimmer guard.
When purchasing replacement line, look for packaging that lists compatibility with your trimmer’s head type and gauge. Many trimmer line packages also indicate whether the line is suited for bump-feed or fixed-line heads.
Safety Precautions Before Loading Line
Before working on your trimmer head, take a few essential safety steps to prevent injury.
- Disconnect power: For gas trimmers, disconnect the spark plug wire. For battery-powered or corded electric trimmers, remove the battery or unplug the unit. This prevents accidental startup while your hands are near the cutting head.
- Wear eye protection: Trimmer line can whip or snap unexpectedly during loading and use. Safety glasses or goggles protect your eyes from flying debris and errant line.
- Work on a stable surface: Place the trimmer on a flat, stable surface or secure it so it doesn’t move while you’re working on the head.
These are standard safety practices recommended for any trimmer maintenance. Always follow the safety guidelines in your owner’s manual.
How to Load Line on a Bump-Feed Head
Bump-feed heads are the most common, so this section covers the loading process in detail. While specific steps may vary by model, the general process is consistent across most bump-feed designs.
Step 1: Remove the Head Cover or Bump Knob
Start by removing the bump knob or head cover to access the spool inside. On most bump-feed heads, you can press tabs or turn the bump knob counterclockwise to release it. Some heads have two tabs on opposite sides that you press inward to release the cover. Once removed, you should see the spool with any remaining old line.
Step 2: Remove Old Line and Clean the Spool
If there’s old, worn, or tangled line on the spool, remove it completely. Take this opportunity to clean out any debris, grass buildup, or dirt from the spool and head housing. A clean spool helps the new line wind and feed properly.
Step 3: Anchor the Line
Look for an anchor point on the spool. Many spools have a small notch, hook, or slot in the center where you can secure the starting end of the line. Insert the end of the line into this anchor point to hold it in place while you wind.
Step 4: Wind the Line in the Correct Direction
This is one of the most important steps. Wind the line onto the spool in the direction of rotation, which is typically indicated by arrows molded into the spool. On most trimmers, this means winding clockwise when looking at the spool from the bottom. Winding in the wrong direction will prevent the line from feeding properly and may cause jams.
Wind the line evenly across the spool, keeping it neat and avoiding overlaps or tangles. Don’t overfill the spool — leave a small gap between the wound line and the outer edge of the spool. Over-winding is a common cause of feeding problems.
Step 5: Thread the Line Through the Eyelets
Once the line is wound, thread the free end through the eyelet (the hole in the trimmer head where the line exits). For dual-line heads, you’ll thread one end through each eyelet on opposite sides of the head. Pull a few inches of line through each eyelet.
Step 6: Reassemble the Head
Place the spool back into the head housing, making sure it seats properly. Align any tabs or guides as needed. Reattach the bump knob or head cover by pressing it into place or turning it clockwise until it clicks or locks. Give the line a gentle pull to confirm it feeds smoothly.
How to Load Line on a Fixed-Line or Quick-Load Head
Fixed-line heads use a simpler approach since there’s no wound spool to deal with.
Step 1: Cut Line to Length
Cut individual pieces of line to the length specified by your trimmer head. Check the head or owner’s manual for the recommended length. A common range is 8 to 12 inches per piece, but this varies.
Step 2: Insert the Line
Feed each piece of line through the designated slots or eyelets in the head. Some heads have channels where the line slides in and is held by friction or a locking mechanism. Pull the line through until equal lengths extend from each side.
Step 3: Secure the Line
Depending on the head design, you may need to pull the line tight, twist it, or engage a locking mechanism to hold it in place. Some quick-load heads have a semi-automatic feature where you insert the line and turn the head to wind it into position.
How to Advance Line on a Bump-Feed Trimmer
Once your line is loaded and you’re ready to trim, you’ll occasionally need to advance more line as it wears down. Here’s how the bump-feed mechanism works:
- While the trimmer is running, lightly tap the bump knob on the ground.
- The impact releases a small amount of line from the spool.
- Line should extend to roughly the diameter of the trimmer guard when fully advanced.
- Avoid striking the head hard against the ground — a light tap is all that’s needed.
If the line doesn’t advance when you bump, check that the spool is wound correctly and that the line isn’t tangled or jammed inside the head.
Common Loading Mistakes and Troubleshooting
Even with careful loading, you may run into issues. Here are the most common problems and how to fix them.
Line Won’t Feed or Advance
If your line won’t feed, the most common cause is winding the line in the wrong direction. Remove the spool and re-wind it in the direction indicated by the arrows. Also check that the line isn’t tangled on the spool and that the spool is seated correctly in the head.
Line Jams or Tangles
Tangles usually result from uneven winding or overfilling the spool. Remove the line, clean the spool, and re-wind it neatly, keeping the line flat and even. Avoid letting the line overlap itself during winding.
Line Breaks Immediately
If the line snaps as soon as you start trimming, you may be using the wrong gauge. Check that the line diameter matches your trimmer head’s specifications. Also inspect the eyelets for sharp edges or burrs that could be cutting the line as it feeds through.
Line Feeds Too Much or Too Little
Excessive feeding can result from over-winding the spool, which puts too much tension on the line release mechanism. Insufficient feeding may indicate under-winding or a worn bump knob. Adjust the amount of line on the spool and inspect the bump mechanism for wear.
Head Won’t Reassemble Properly
If the head cover or bump knob won’t lock back into place, make sure the spool is fully seated and aligned with any tabs or guides. Check that the line isn’t caught between the spool and the housing.
By following these steps and paying attention to winding direction, line gauge, and even spool winding, you can keep your weedeater loaded and ready for effective trimming. When problems persist, consult your owner’s manual or contact the trimmer manufacturer for model-specific guidance.
