Understanding Your Weed Wacker Head Type
Before you begin, it is essential to identify the type of trimmer head on your equipment. The method for how to put line on a weed wacker depends entirely on the design of the head. Most modern string trimmers fall into three categories: bump-feed, fixed-line, and easy-load systems.
A bump-feed head is the most common design; it features a spool inside the head that releases more line when the bottom of the trimmer is tapped against the ground. Fixed-line heads, often found on heavy-duty or commercial trimmers, use individual pre-cut lengths of line that are inserted into slots. Easy-load or rapid-load heads are designed to allow you to thread the line through the head without disassembling the spool, significantly speeding up the process.
You can usually identify your head type by inspecting the bottom of the trimmer. If there is a large, spring-loaded knob or button in the center, you likely have a bump-feed system. If the head has small metal or plastic slots on the sides, it may be a fixed-line or easy-load system. Always consult your owner’s manual to confirm the specific requirements for your model, as using the wrong line diameter or winding technique can lead to poor performance or mechanical damage.
How to Put Line on a Bump-Feed Trimmer Head
Replacing the line on a bump-feed system is a routine maintenance task that requires attention to detail. To start, always ensure the power source—whether it is a battery, spark plug wire, or power cord—is disconnected to prevent accidental startup.
Preparation and Removal
Begin by removing the spool cap. On most models, this is done by pressing the release tabs on the sides of the head or unscrewing the central cap. Once the cap is off, remove the internal spool. Take a moment to clear out any old, tangled, or broken pieces of trimmer line from the spool and the head’s eyelets. Inspect the spool for cracks or excessive wear; if the plastic is damaged, the spool may need to be replaced entirely.
Measuring and Winding
Measure the length of the trimmer line as recommended by your manufacturer—typically between 10 and 25 feet. Cut the line to the specified length. If your spool has two compartments, you will need to cut two separate pieces of line. Thread each end of the line through the eyelets on the spool, ensuring that an equal amount of line extends from both sides.
Wind the line onto the spool in the direction indicated by the arrows embossed on the plastic. It is vital to maintain consistent tension while winding; if the line is loose or crosses over itself, it may become tangled and fail to feed during operation. Once wound, leave a few inches of line protruding from each eyelet and reassemble the spool into the head, feeding the ends through the exit holes on the trimmer housing.
How to Put Line on Fixed-Line and Easy-Load Trimmer Heads
Fixed-line and easy-load systems simplify the process by eliminating the need to wind a long string around a spool. These systems are popular for their convenience and speed.
Fixed-Line Heads
For fixed-line heads, you must cut the trimmer line into shorter, specific segments as dictated by the trimmer’s design. Instead of winding, you simply insert these segments into the designated slots or clamps on the trimmer head. Ensure the line is locked securely in place. This method is often used for heavier-duty cutting, as it allows for the use of thicker, more durable line diameters.
Easy-Load Systems
Easy-load or rapid-loading heads allow you to feed the line through the head without disassembling the unit. Typically, you align the eyelets on the head with an internal mark, thread the line through until it is centered, and then turn a knob on the head to wind the line internally. This prevents the frustration of tangles and ensures that the line is wound with the correct tension automatically.
Key Tips and Troubleshooting
The performance of your string trimmer is heavily influenced by the quality and diameter of the line you choose. Using a line that is too thick for your motor can cause the trimmer to overheat or bog down, while a line that is too thin will break prematurely.
Selecting the Right Line
Always refer to your manual for the recommended line diameter. Common sizes include .065-inch for light-duty grass trimming and .080-inch or higher for thicker weeds and woody growth. Using the correct diameter ensures the line feeds properly and cuts efficiently.
Troubleshooting Common Issues
If the line refuses to feed, it is often due to the line being welded together inside the spool from heat, or because it was wound too loosely. If the line feeds too quickly, check to ensure the bump-feed spring is properly seated and the release tabs are not worn. If you experience constant breakage, avoid hitting hard surfaces like concrete or stone, as these will fray and weaken the line rapidly. If you are unsure about any step of the process, consult a professional or your local equipment dealer for guidance.
