Is your string trimmer sputtering, refusing to feed new line, or just generally making a mess of your yard work? You’re not alone. A common culprit for these frustrating issues is an empty or improperly loaded bump feed spool.
But don’t worry! Replacing the trimmer line in your bump feed head is a straightforward task that can get you back to tackling those stubborn weeds in no time. This guide will walk you through the process, step by step, demystifying what might seem like a fiddly job.
Mastering Your Trimmer: How to Replace Trimmer Line Bump Feed
There’s nothing quite like the satisfaction of a neatly trimmed lawn, free from encroaching weeds and overgrown edges. Your string trimmer is your trusty sidekick in this endeavor. However, when the line runs out, or worse, gets tangled, your trimming session can grind to a halt. The most common type of trimmer head, the bump feed, relies on a spool of line that’s advanced by tapping the head on the ground. When this system fails, it’s usually down to the line itself. Learning how to replace trimmer line bump feed is an essential skill for any homeowner with a gas or electric trimmer.
Why Does Trimmer Line Need Replacing?
Trimmer line, also known as trimmer string or weed eater line, is a consumable. It’s designed to break away as it cuts through grass and weeds. Over time, this constant friction wears it down. When the line gets too short, or if it breaks off inside the spool, the bump feed mechanism can’t do its job. This leads to:
- No Line Feeding: The most obvious sign. You tap the trimmer, but nothing happens.
- Uneven Cutting: The trimmer might still cut, but with less power and an inconsistent result.
- Tangled Line: Sometimes, the line can get knotted up inside the spool, preventing it from unwinding.
- Reduced Efficiency: A trimmer with no line is about as useful as a hammer with no head.
Understanding Your Bump Feed Trimmer Head
Before we dive into the replacement process, let’s understand how a typical bump feed head works. It consists of several key parts:
- Spool: This holds the trimmer line. It’s usually a plastic component that rotates.
- Eyelets (or Ports): Small openings on the sides of the spool through which the trimmer line exits.
- Spring: Located inside the head, this provides the tension for the bump feed mechanism.
- Bumper: The mechanism you tap on the ground to advance the line.
- Cover/Cap: This encloses the spool and keeps everything in place.
When you tap the trimmer head on the ground, the inertia causes the bumper to push inward, compressing the spring. This action allows the spool to rotate slightly, feeding out a fresh length of line through the eyelets.
Gathering Your Supplies
To successfully replace your trimmer line, you’ll need a few things:
- New Trimmer Line: This is the most crucial item. Ensure you buy the correct type and thickness for your trimmer. Check your trimmer’s manual for specifications. Common thicknesses are 0.065″, 0.080″, 0.095″, and 0.105″.
- Pliers: For gripping and pulling out old line, or for cutting the new line.
- Scissors or Utility Knife: To cut the new line to the correct length.
- Gloves: To protect your hands from sharp edges or dirt.
- Safety Glasses: Always wear these when working with tools, especially those that involve cutting or spinning.
- Your Trimmer: Of course!
- A Flat Surface: To work on.
Step-by-Step: How to Replace Trimmer Line Bump Feed
Let’s get down to business. Follow these steps carefully: (See Also: how to reload ego string trimmer)
Step 1: Disconnect Power and Safety First!
This is paramount. If you have a corded electric trimmer, unplug it from the power source. For battery-powered trimmers, remove the battery. For gas trimmers, ensure the engine is off and cooled down, and disconnect the spark plug wire to prevent accidental starting.
Step 2: Remove the Trimmer Head Cover
Most bump feed heads have a cover or cap that needs to be removed to access the spool. Look for a release tab or a slot where you can insert a flathead screwdriver or a similar tool to pry it open. Some models might have a button you need to press.
Tip: If the cover is stuck, a gentle tap with the palm of your hand or a rubber mallet might help loosen it. Avoid excessive force.
Step 3: Remove the Old Spool
Once the cover is off, you’ll see the spool. It might be held in place by a central pin or a clip. Carefully lift the spool out of the trimmer head housing. If there’s any old, tangled line remaining on the spool, remove it completely. You might need pliers to pull out stubborn pieces.
Step 4: Prepare the New Trimmer Line
This is where precision matters. You’ll need to wind the new line onto the spool. Most spools are designed to take a specific length of line, often wound in a single continuous piece or two separate pieces. Check your trimmer’s manual for the recommended length and winding method.
Common Winding Methods:
- Single Line: Some spools are designed for one long piece of line. You’ll need to find the center of the line, feed it through a small hole in the spool, and then wind each half in opposite directions.
- Dual Line: More common, this method uses two separate pieces of line. You’ll insert one end of each line into the designated holes on the spool and then wind each piece around its respective side of the spool.
Winding Tips: (See Also: how to trim mustache with trimmer)
- Wind Tightly and Neatly: Avoid overlapping the line as much as possible. Loose or overlapping line can cause tangles and prevent proper feeding.
- Secure the Ends: Before you start winding, leave a few inches of line sticking out of the spool’s eyelet. This will be your starting point for feeding the line through the trimmer head. Some spools have small notches to hold the line end in place while you wind.
- Use the Correct Length: Too much line can create a jam; too little means you’ll be back here sooner than you’d like.
Step 5: Rewind the Spool
This is often the most tedious part. Take your new trimmer line and begin winding it onto the spool. If you’re using a dual-line spool, secure one end of the first line in one of the spool’s winding slots or through its designated hole. Wind the line around that side of the spool in the direction indicated by any arrows on the spool. Repeat this for the second line on the other side of the spool.
Important: Ensure the line is wound evenly and tightly. If you’re using a single-line spool, find the center, feed it through the central hole, and wind each half in opposite directions. When you’re done, leave about 6 inches of line extending from each eyelet (for dual-line) or from the center hole (for single-line).
Step 6: Reassemble the Trimmer Head
Once the spool is wound, it’s time to put everything back together.
- Place the Spool: Carefully insert the newly wound spool back into the trimmer head housing. Make sure it sits correctly on its central post or pin.
- Align the Line: Gently pull the ends of the trimmer line that you left extended and thread them through the eyelets (or ports) on the trimmer head housing. This is crucial for the bump feed mechanism to work.
- Replace the Cover: Snap the trimmer head cover back into place. Ensure it clicks or locks securely.
Troubleshooting Reassembly: If the cover doesn’t snap back easily, double-check that the spool is seated correctly and that the trimmer line is properly threaded through the eyelets and not pinched.
Step 7: Test the Bump Feed
With the trimmer head reassembled, it’s time for a test. Reconnect the power source (plug in the cord, insert the battery, or reconnect the spark plug wire). Hold the trimmer firmly, point it away from yourself and any objects, and gently tap the bump feed button on the ground. You should hear the trimmer rev up and see a new length of line feed out.
If it doesn’t feed, don’t panic. Try tapping it a bit firmer or a few more times. If it still doesn’t work, you might need to disassemble the head again and check for:
- Incorrect Line Winding: Is it too loose or tangled?
- Line Not Threaded Through Eyelets: This is a common mistake.
- Debris in the Mechanism: Clean out any grass clippings or dirt.
- Damaged Parts: Inspect the spool, spring, and housing for any cracks or breaks.
Alternative: Pre-Wound Spools
If winding your own spool seems too daunting or time-consuming, many manufacturers offer pre-wound replacement spools. These are ready to go right out of the package. You simply remove the old spool and insert the new, pre-wound one. This is a fantastic option for quick replacements and for those who find manual winding frustrating. (See Also: how to disinfect beard trimmer)
Choosing the Right Trimmer Line
The type of trimmer line you use can significantly impact performance and how often you need to replace it. Here’s a quick guide:
| Line Diameter | Best For | Pros | Cons |
|---|---|---|---|
| 0.065″ – 0.070″ (Light Duty) | Small electric trimmers, light grass | Feeds easily, less wear on trimmer motor | Breaks easily on tougher weeds |
| 0.080″ – 0.095″ (Medium Duty) | Most gas trimmers, average yards | Good balance of durability and cutting power | Can be overkill for very light trimming |
| 0.105″ and up (Heavy Duty) | Commercial-grade trimmers, thick brush, woody weeds | Extremely durable, cuts through tough vegetation | Requires more power from the trimmer, can be noisy |
Line Shapes: Beyond diameter, lines come in various shapes: round, square, twisted, and star-shaped. Twisted and star-shaped lines often offer quieter operation and better cutting efficiency.
Maintenance Tips for Your Trimmer Head
To ensure your bump feed head functions smoothly and lasts longer, consider these maintenance tips:
- Clean After Use: Remove grass clippings, dirt, and debris from the head after each use. This prevents buildup that can hinder the mechanism.
- Store Properly: Keep your trimmer and spare spools in a dry place.
- Inspect Regularly: Look for any signs of wear or damage on the spool, eyelets, and housing.
- Soak New Line (Optional): Some users find that soaking new trimmer line in water for a few hours before winding can make it more flexible and less prone to breaking. This is particularly true for thicker, more rigid lines.
When to Consider a New Trimmer Head
While replacing the line is usually a simple fix, there are times when the entire trimmer head might be damaged or worn out. Signs that you might need a new head include:
- Cracked or Broken Housing: If the main body of the head is damaged.
- Damaged Eyelets: If the ports where the line exits are worn or misshapen.
- Stuck or Broken Spring: If the internal spring mechanism is no longer functional.
- Difficulty Reassembling: If parts no longer fit together correctly.
Replacing the entire head is also a relatively straightforward process, typically involving unscrewing the old head and screwing on a new one. Always ensure the new head is compatible with your trimmer model.
Common Mistakes to Avoid
Even with clear instructions, some common pitfalls can trip you up:
- Using the Wrong Line Thickness: Too thick a line can strain your trimmer’s motor; too thin will break constantly.
- Overfilling the Spool: This is a surefire way to create tangles.
- Not Securing Line Ends: The line can unravel during winding or operation.
- Forgetting to Thread Line Through Eyelets: The bump feed won’t work if the line isn’t exiting correctly.
- Not Disconnecting Power: This is a critical safety oversight.
Conclusion
Learning how to replace trimmer line bump feed is a fundamental maintenance task that keeps your string trimmer performing at its best. By following these steps, you can quickly and efficiently reload your spool, ensuring uninterrupted yard work. Remember to always prioritize safety, use the correct line, and wind it neatly for optimal results.
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