To put trimmer line on a string trimmer, first cut the line to the correct length recommended for your specific spool. Always disconnect the power source—unplug the cord, remove the battery, or disconnect the spark plug wire—before beginning. Remove the spool, note the directional arrows printed on the housing, and wind the line evenly, either as one continuous piece folded in half or two separate pieces depending on your model. Finally, feed the ends through the eyelets and reassemble the trimmer head, ensuring the line lines up with the exit holes.
Understanding Your Trimmer Head: Bump-Feed vs. Fixed-Line
Before you begin, identify whether your trimmer uses a bump-feed head or a fixed-line head. The bump-feed head is the most common design; it features an internal spool that holds a long length of line. When the head is tapped against the ground while spinning, a mechanism releases more line through the eyelets. In contrast, a fixed-line head typically uses short, pre-cut segments of line that are inserted into designated slots. Knowing your head type is critical, as the loading process for a reel-based bump-feed system is significantly different from securing individual fixed segments.
What You Need Before Putting In Trimmer Line
Preparation prevents frustration. Start by checking your owner’s manual for the correct line gauge (thickness). Using line that is too thick can cause the motor to struggle or the trimmer head to jam, while line that is too thin may break frequently. Generally, lighter-duty trimmers require thinner line, while professional-grade models use thicker, more durable gauges. Always ensure the device is completely powered down and disconnected from its energy source to prevent accidental activation during the process.
Step-by-Step: How to Put Trimmer Line on the Spool
For most bump-feed trimmers, the process follows these general steps:
- Removal: Depress the release tabs or unscrew the cap to remove the spool from the trimmer head.
- Measuring: Cut the recommended length of trimmer line. Avoid using excessive length, as it can cause the line to tangle inside the housing.
- Winding: Identify the arrows on the spool that indicate the direction of rotation. Wind the line tightly and evenly around the spool, following the direction of the arrows. If your spool has two compartments, wind each piece of line into its respective side to prevent overlapping.
- Securing: Once wound, leave a few inches of line protruding from each side. Secure the lines in the small notches provided on the spool rim to keep them from unspooling while you reassemble the head.
- Reassembly: Feed the line ends through the eyelets of the trimmer head housing. Snap the spool cover back into place, ensuring it is locked securely.
Common Brand Variations: Stihl, Ryobi, Black+Decker, and Others
While the basic principles remain consistent, manufacturers like Stihl, Ryobi, and Black+Decker often feature proprietary spool designs. Some models allow you to wind the line without removing the spool by aligning the eyelets and feeding the line through. Always consult the diagrams printed directly on the trimmer head or the specific manual for your model, as forcing a spool cover or winding in the wrong direction can damage the internal feed mechanism.
Direct Answers: Common Problems and Fixes
If your line fails to feed, it is often due to the line being welded together from heat or wound too loosely, leading to tangles. To prevent this, ensure the line is wound tightly and evenly without crossing over itself. If the line pops out, check that the retaining notches are holding the line firmly during assembly. If you encounter persistent mechanical issues after following these steps, consult a qualified service professional to inspect the internal spring and bump-feed mechanism for wear or damage.
