Maintaining your grass trimmer is essential for optimal performance and longevity, and one of the most common maintenance tasks is changing the nylon cord. If you own a Stihl trimmer, this guide will walk you through the process step by step, ensuring you can tackle the job with confidence. Whether you have a single-line, double-line, or speed-feed trimmer, we've got you covered.
Why Change the Nylon Cord?
Over time, the nylon cord on your trimmer can become worn, frayed, or broken, affecting its ability to cut grass efficiently. Regularly replacing the cord improves performance and enhances safety while using the machine. A well-maintained trimmer will make your lawn care tasks much more manageable.
Tools and Materials You Will Need
Before you begin, gather the following tools and materials:
Stihl grass trimmer
Replacement nylon cord (specific to your trimmer model)
Scissors or a cutting tool
Protective gloves
Safety goggles
Measuring tape (optional)
Water (for soaking the cord)
Changing the Cord on a Single-Line Trimmer
Step 1: Prepare the Line
Select the Right Cord Size: The length and width of the line you need will vary based on your trimmer model. Purchasing the wrong width of line will hinder the trimmer's functionality. If you're uncertain about the size, check online or give Stihl Stanmore's friendly team a quick call for guidance.
Cut the Cord to Length: The length of the cord should also be tailored to your specific trimmer. Typically, this ranges from 10 to 25 inches. If you're unsure about the exact length, it's better to opt for a longer piece of nylon cord—you can always trim it down later.
Step 2: Turn Off the Trimmer
Safety First: Ensure the trimmer is turned off and unplugged if it’s an electric model. For gas-powered trimmers, ensure the engine is off and cool. This prevents any accidental startups during maintenance.
Step 3: Remove the Retaining Cap
Remove the Cap: To remove the retaining cap, either unscrew it or skillfully press the release tabs. Different trimmer models will have varying mechanisms for removing the spool, so consult your owner’s manual if needed.
Step 4: Locate the Starter Hole in the Spool
Insert the Cord: Insert the tip of the nylon cord into the starter hole in the spool, winding in the appropriate direction.
Wind Neatly: Be sure to wrap the cord in straight, neat rows to avoid unnecessary jamming during use. This ensures that the cord feeds out smoothly when you're trimming.
Secure the Cord: When there are about 5 inches of line left over, snap the cord into the spool's retainer to keep it held in place.
Changing the Cord on a Double-Line Trimmer
For double-line trimmers, the process is similar but involves a few additional steps.
Follow Steps 1, 2, and 3 as Above
You’ll first need to prepare your trimmer line, ensure the trimmer is off, and remove the retaining cap as described above.
Step 4: Locate the Starter Holes in the Spool
Insert the First Line: Insert the tip of the nylon cord into one of the starter holes in the spool and wind it in the appropriate direction.
Wrap Neatly: Again, be sure to wrap the cord in straight, neat rows, avoiding tangling.
Secure the First Cord: When you have about 5 inches left over, snap the first cord into the spool’s retainer.
Repeat for the Second Line: Now repeat the process with the second line. The two cord ends should be positioned on opposite sides of the spool, matching the eyelets on the outside of the trimmer head.
Step 5: Remove the Lines from the Retainers
Thread the Cords: Thread the cords through the eyelets on the outside of the trimmer head. This ensures both lines are feeding smoothly.
Reinstall the Spool: Replace the spool back into the trimmer head and pull the cords through the slot. This will allow the trimmer to operate correctly.
Changing the Cord on a Speed-Feed Trimmer
Speed-feed trimmers offer a more efficient method for changing the cord, making the process quicker and more user-friendly.
Follow Steps 1 and 2 as Above
Start by preparing the line and ensuring your trimmer is turned off.
Step 3: Rotate the Cap
Align the Arrows: Rotate the cap to align the arrows with the eyelets. Proper alignment is crucial, as it allows for a smooth threading process.
Check Visibility: Once aligned, you should be able to see light through the eyelets, indicating the correct positioning.
Step 4: Thread the Trimmer Line
Insert the Line: Thread the end of the trimmer line through one eyelet. If done correctly, the trimmer cord should come through the opposite side of the trimmer head.
Even the Length: Hold the ends of the cord together and pull to ensure both sides are even. This will help with consistent performance when trimming.
Adjust the Length: Turn the head clockwise until approximately 5 inches of line are exposed. This ensures that the line is ready for use.
Final Steps for All Trimmer Types
Step 5: Reinstall the Spool Cap
Secure the Cap: Once the cord is correctly threaded, reinstall the spool cap. Ensure it is secured tightly to prevent it from coming loose during operation.
Step 6: Test the Trimmer
Check the Length: Pull on the ends of the nylon cord to make sure they are seated correctly and the lengths are appropriate. The cord should extend from the head about 5 inches on either side.
Start the Trimmer: Turn on your Stihl trimmer and allow it to idle for a few seconds. This will help spool out the cord to the correct length if you have an automatic feed type.
Test Operation: Test the trimmer on some grass to ensure it cuts effectively and the cord feeds smoothly. If the cord breaks or doesn’t feed properly, turn off the machine and recheck your winding process.
Tips for Using Your Grass Trimmer
Regular Maintenance: Check the nylon cord regularly and replace it as soon as you notice any wear or fraying. Keeping an eye on your equipment can save you from unexpected failures while trimming.
Soak for Longevity: Consider soaking the nylon cord in water for 24 hours before installation. This will help improve flexibility and durability, reducing the chance of breakage during use.
Use the Right Technique: When trimming, use a sweeping motion and keep the trimmer head parallel to the ground. This not only helps achieve a clean cut but also prolongs the life of your nylon cord.
Store Properly: After each use, clean the trimmer and store it in a dry place. This will prevent moisture and dirt from accumulating, which can damage the cord and other components.
Invest in Quality Line: Choosing a high-quality nylon cord specifically designed for your Stihl trimmer can improve performance and reduce the frequency of changes.
Know When to Change: If you find yourself replacing the line frequently, it may be a sign that you need to adjust your trimming technique or consider using a different type of cord that better suits your cutting style.
Conclusion
Changing the nylon cord on your Stihl grass trimmer is a straightforward process that, when done correctly, can greatly enhance the performance and lifespan of your equipment. By following this detailed guide, you can ensure that your trimmer is always ready to tackle any job, from light trimming to heavy-duty mowing.
Remember, regular maintenance is key to prolonging the life of your equipment, so don’t neglect it! With these tips and techniques, you can keep your grass trimmer in top shape and ready to tackle any job. Happy trimming!
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