How to Restring a Weed Eater: A Clear, Step-by-Step Guide
Restringing a weed eater involves removing the trimmer head or spool, taking out the old line, cutting a new piece of trimmer line to the correct length, and winding it onto the spool according to the manufacturer’s instructions. The process typically requires you to align the spool’s notches, wind the line tightly and evenly in the direction indicated by arrows, and then reassemble the head, ensuring the line feeds freely through the eyelets.
Understanding the Weed Eater String Replacement Process
A weed eater, also known as a string trimmer, uses a rapidly spinning spool of plastic line to cut grass and weeds. The spool is the core component that holds the trimmer line. Over time, the line wears down, breaks, or becomes tangled, necessitating replacement. Regular restringing is essential for maintaining your trimmer’s cutting efficiency and preventing motor strain.
What is a weed eater spool and how does it work?
The spool is a plastic or metal cylinder located at the head of the trimmer. It houses the coiled trimmer line. As the spool spins, centrifugal force causes the line to extend outward. Most modern weed eaters use a “bump feed” system, where tapping the head on the ground advances a small amount of new line from the spool.
Why does the trimmer line need to be replaced?
The line is a consumable part designed to wear away as it contacts tough weeds, rocks, and pavement. It can also snap if it hits a solid object or become tangled if wound incorrectly. A worn or broken line results in poor cutting performance and an uneven trim.
What are the common signs that it’s time to restring your weed eater?
- The line is too short to effectively reach the grass.
- The line is frayed, knotted, or has become a tangled “bird’s nest” on the spool.
- The trimmer is struggling to cut or is leaving patches of uncut grass.
- The bump feed mechanism is no longer advancing line.
Key Factors to Consider Before Restringing
Before you begin, gather the right supplies and understand your trimmer’s specifications to ensure a smooth process.
What are the different types of trimmer line and their uses?
Trimmer line comes in various shapes, each suited for different tasks:
- Round Line: The most common and economical type. Good for general grass trimming.
- Square or Diamond-Shaped Line: Has sharper edges that cut more aggressively, making it better for thicker weeds.
- Serrated or Twisted Line: Designed for maximum cutting power and reduced noise, ideal for heavy-duty overgrowth.
How do you determine the correct diameter and length of line for your specific trimmer model?
The correct line diameter is critical. Using a line that is too thick can jam the spool or strain the motor, while a line that is too thin will break easily. Check your trimmer’s manual or look for specifications printed on the spool or trimmer head. Common diameters range from 0.065 inches for light-duty trimmers to 0.155 inches for commercial models. For length, a general rule is to use a piece of line approximately twice the length recommended by your trimmer’s manufacturer, but always follow the specific instructions for your model.
What tools or supplies might you need beyond the new trimmer line?
- A flathead screwdriver or a specialized tool (often included with the trimmer) to pry open the spool cover.
- Scissors or line cutters to trim the new line to length.
- Gloves to protect your hands.
Step-by-Step Guide to Restringing Your Weed Eater
Follow these steps carefully for a successful restringing. Always ensure the trimmer is turned off and the spark plug wire is disconnected (for gas models) or the battery is removed (for electric models) before starting.
How do you safely remove the trimmer head or spool from the weed eater?
Most trimmer heads have a release mechanism. This often involves pressing two tabs on the sides of the head or unscrewing a retaining knob. Some models may require you to hold the spool stationary while turning the outer housing. Consult your manual for the exact method. Once released, the spool should pull straight out.
What is the correct method for removing the old, tangled, or broken line?
If the old line is tangled, you may need to unwind it manually or cut it away with scissors. Look for the end of the line tucked into a notch on the spool and unwind it completely. Clean any debris from the spool housing before installing new line.
How do you properly measure and cut the new trimmer line?
Cut a new piece of line to the length specified in your trimmer’s manual. If no length is specified, a good starting point is about 10 to 15 feet for most residential trimmers. Using line that is too long can cause tangles.
What is the correct technique for winding the new line onto the spool to prevent tangles?
This is the most critical step. Most spools have two separate channels or a divided center for a dual-line head.
- Find the starting anchor point on the spool, which is usually a small notch or hook.
- Insert the end of the line into this anchor point.
- Wind the line tightly and evenly onto the spool. Follow the direction of the arrows molded into the plastic. Winding in the wrong direction will prevent the line from feeding.
- Keep tension on the line as you wind to prevent loops and tangles.
- Once wound, leave about 6 inches of line free and secure the end in the holding notch on the spool’s edge.
- Repeat for the second line if your trimmer uses a dual-line head.
How do you reassemble the trimmer head and ensure the line feeds correctly?
Place the wound spool back into the trimmer head. Thread the free ends of the line through the eyelets (the holes in the outer housing). Align the spool’s tabs with the slots in the head and press firmly until it clicks into place. Give the lines a gentle tug to ensure they are seated properly and can move freely.
Troubleshooting Common Restringing Issues
Even with careful winding, issues can arise. Here’s how to fix them.
What should you do if the new line immediately tangles or ‘birds-nests’ when you start the trimmer?
A bird’s nest is almost always caused by incorrect winding. The line was likely wound in the wrong direction, or it was not wound tightly enough, creating slack. Disassemble the head, remove the tangled line, and rewind it carefully, ensuring you follow the directional arrows and maintain firm tension.
How can you fix a spool that won’t feed line or feeds it unevenly?
First, ensure the line ends are threaded correctly through the eyelets. Check that the spool is fully seated and locked into the head. If the bump feed isn’t working, the line may be wound too tightly or the spool mechanism may be dirty. Try loosening the line slightly or cleaning the spool housing.
What are common mistakes to avoid when winding the line onto the spool?
- Winding in the wrong direction: Always follow the arrows on the spool.
- Not maintaining tension: Loose winding leads to tangles.
- Using the wrong line diameter: This can jam the mechanism.
- Overfilling the spool: Leave enough space so the line can unwind freely.
Frequently Asked Questions
Can I use any brand of trimmer line on my weed eater?
Yes, as long as the line matches the diameter specification for your trimmer model. The brand is less important than the correct size and shape for your intended cutting task.
How often should I restring my weed eater?
There is no fixed schedule. It depends entirely on usage and the conditions you’re trimming. Check the line before each use and replace it when it becomes too short to be effective or shows signs of significant wear.
Is there a way to prevent the line from breaking so often?
Using a slightly thicker or more durable line shape (like square or serrated) can help. Also, try to avoid hitting hard surfaces like rocks, pavement, or fences, which are the primary causes of line breakage.
