How To String A Double String Weed Eater

Stringing a double string weed eater, also known as a string trimmer, involves replacing the worn or broken cutting line within the trimmer head. This process is crucial for maintaining the effectiveness of the tool and ensuring a clean and efficient trimming experience. This guide provides a detailed, step-by-step approach to restringing a double string weed eater, applicable to most common models.

Preparation and Safety

Before commencing any maintenance on power equipment, prioritize safety. Disconnect the weed eater from its power source. For electric models, unplug the power cord. For gasoline-powered models, remove the spark plug wire. This action prevents accidental starting during the restringing process.

Wear safety glasses to protect your eyes from debris. Gloves are also recommended to protect your hands from the line and trimmer components.

Gather necessary materials: replacement trimmer line, typically sold in spools, and potentially a screwdriver or wrench depending on the model.

Identifying the Trimmer Head Type

Weed eater trimmer heads vary in design, but most fall into one of two categories: bump-feed or fixed-line. The specific method for restringing will differ slightly depending on the head type.

Bump-Feed Trimmer Heads

Bump-feed heads dispense more line when the head is "bumped" against the ground while the trimmer is running. These heads usually have a central button on the bottom. The line is wound onto a spool inside the head.

Fixed-Line Trimmer Heads

Fixed-line heads have pre-cut lengths of line that are manually inserted into designated holes or slots on the trimmer head. These are simpler in design but require more frequent line replacement as the line wears down.

Restringing a Bump-Feed Trimmer Head

This is the most common type. Follow these steps:

1. Disassemble the Trimmer Head: Locate the release mechanism on the trimmer head. This may involve pressing buttons, squeezing tabs, or unscrewing a retaining cap. Consult your owner's manual for specific instructions for your model. Remove the spool from the trimmer head housing.
2. Clean the Trimmer Head: Before restringing, clean the trimmer head housing and spool. Remove any dirt, grass, or debris that may interfere with the smooth operation of the line.
3. Determine Line Length and Direction: Consult your owner's manual for the recommended line diameter and length. Using the wrong diameter can damage the trimmer head. Cut two equal lengths of the new trimmer line, typically several feet long each. Most spools have arrows indicating the winding direction. Note this direction.
4. Wind the First Line: Locate the anchor point on the spool. This is usually a small hole or notch. Insert one end of the first length of line into the anchor point and begin winding the line tightly and evenly onto one side of the spool, following the indicated direction. Do not overlap the line. Leave a few inches of line free.
5. Wind the Second Line: Repeat the process with the second length of line on the other side of the spool. Ensure the two lines are wound in the correct directions (often opposite directions) and that they do not overlap. Leave a few inches of line free.
6. Secure the Line Ends: Most spools have slots or eyelets to secure the ends of the lines. Insert the free ends of the lines into these slots to prevent them from unwinding during reassembly.
7. Reassemble the Trimmer Head: Carefully reinsert the spool into the trimmer head housing, aligning the line ends with the exit holes on the head. Ensure the spool clicks or locks into place correctly. Replace the retaining cap or cover, securing it according to the manufacturer's instructions.
8. Test the Line Feed: With the trimmer disconnected from the power source, manually pull on the line ends to ensure they feed smoothly from the head. If the line is stuck or tangled, disassemble the head and re-wind the line more carefully.

Example: A common error is overfilling the spool. This can prevent the line from feeding properly. Ensure the line is wound tightly and evenly, and do not exceed the recommended line capacity.

Restringing a Fixed-Line Trimmer Head

Fixed-line heads are simpler to restring:

1. Remove the Old Lines: Pull out the old, worn lines from the designated holes or slots on the trimmer head. These may require some force if they are tightly wedged in.
2. Cut New Lines to Length: Consult your owner's manual for the correct length of the trimmer line. Cut new lengths of line accordingly. It is better to err on the side of caution and cut them slightly longer, as you can always trim them down later.
3. Insert the New Lines: Carefully insert one end of each new line into the designated holes or slots on the trimmer head. Push the line in firmly until it is securely seated. Some models may require you to thread the line through a specific path within the head.
4. Secure the Lines: Ensure the lines are securely fastened in the head. They should not easily pull out. If the lines are loose, you may need to use a tool, such as pliers, to crimp the retaining clips or tighten the securing mechanism.
5. Trim Excess Line (Optional): If the lines are excessively long, you can trim them to a more manageable length using scissors or wire cutters. However, avoid trimming them too short, as this will reduce the cutting width and efficiency of the trimmer.

Note: Some fixed-line heads use a screw or clamp to secure the line. Ensure this screw or clamp is properly tightened to prevent the line from coming loose during operation.

Troubleshooting

• Line Breaks Frequently: This could be due to using the wrong line diameter, trimming against hard surfaces excessively, or the line being old and brittle.
• Line Won't Feed: This can be caused by overfilling the spool, tangled line, or a faulty line feed mechanism. Disassemble the head and inspect for any obstructions.
• Trimmer Head Vibrates Excessively: This can be caused by uneven line lengths or a damaged trimmer head. Ensure the lines are of equal length and inspect the head for cracks or damage.

Maintenance and Best Practices

Store trimmer line in a cool, dry place to prevent it from becoming brittle. Replace the line regularly, even if it is not completely worn out, to ensure optimal performance. Clean the trimmer head after each use to remove debris and prevent clogging. Inspect the trimmer head regularly for wear and tear, and replace any damaged components.

Consider using higher-quality trimmer line. While it may be more expensive, it is often more durable and less prone to breaking, saving you time and money in the long run.

Conclusion

Restringing a double string weed eater is a straightforward task that can be mastered with a little practice. By following these steps and paying attention to detail, you can ensure that your weed eater is always ready to tackle your lawn care needs. Regularly maintaining your weed eater will prolong its lifespan and ensure optimal performance. Remember to always prioritize safety by disconnecting the power source and wearing appropriate protective gear.