The hum of a lawn mower is a familiar summer soundtrack, but what happens when that familiar hum turns into a frustrating clatter? You might be dealing with a worn-out or tangled string, and that’s where a little know-how comes in handy. This comprehensive guide will walk you through the process of changing lawn mower string, from identifying the right type to navigating the intricacies of your specific model. Whether you’re a seasoned homeowner or a novice gardener, this step-by-step guide will empower you to tackle this simple task with confidence.
Overview
Changing lawn mower string is a relatively straightforward task, but it requires a bit of patience and attention to detail. This process typically involves removing the old string, inserting new string, and then properly winding it onto the spool. The specifics may vary depending on the type of lawn mower and the spool design.
Identifying the Right String
The first step in changing lawn mower string is to determine the type of string your mower requires. This information is usually found in the owner’s manual, or you can simply look at the old string.
Types of String
- Round String: This is the most common type of string, typically made of nylon. It’s durable and affordable, making it ideal for most lawn mowing tasks.
- Square String: This type is known for its strength and ability to cut through thicker weeds. It’s also less prone to tangling than round string.
- Tri-Line String: This is a more specialized string that combines three strands of nylon, providing a wider cutting path.
Choosing the Right Diameter
The diameter of the string is crucial for ensuring optimal performance. A thicker string will cut through tougher weeds, while a thinner string will provide a cleaner cut on delicate grass. Consult your owner’s manual or check the old string for the recommended diameter.
Tools You’ll Need
To change lawn mower string, you’ll need a few basic tools:
- Screwdriver: You’ll need a screwdriver that matches the screw size on your mower’s head.
- Pair of pliers: These are useful for manipulating the string and holding the spool in place.
- New string: Ensure you have the right type and diameter of string for your mower.
How to Change Lawn Mower String: A Step-by-Step Guide
Now that you have the right tools and string, it’s time to get started with the actual process of changing your lawn mower string.
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Turn off the mower and unplug it. Safety first! Make sure the mower is completely off and disconnected from power before you begin.
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Locate the string head. The string head is typically located at the bottom of the mower deck, where the string is dispensed.
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Remove the string head cover. This will vary depending on your model. Some covers are simply snapped in place, while others might require unscrewing a few screws.
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Remove the old string. Depending on your spool design, this might involve pulling the old string out or winding it around a central spindle.
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Insert the new string. Start by threading the new string through the holes or slots on the spool. Refer to your owner’s manual or look at the old string for guidance.
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Wind the new string onto the spool. This is the most important step. You need to wind the string correctly so it can be dispensed evenly.
- Single-Line Spool: Wind the string onto the spool in a clockwise direction, keeping it taut and smooth.
- Double-Line Spool: Wind the string onto the spool in opposite directions, following the instructions in your owner’s manual.
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Cut the string to the correct length. Once the string is wound onto the spool, cut the end of the string at the length recommended by the manufacturer. This typically involves leaving a few inches of excess.
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Reattach the string head cover. Securely fasten the string head cover.
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Test the string. Turn the mower on and let it run for a few seconds to ensure the string is dispensing correctly.
Troubleshooting Common Problems
While changing lawn mower string is typically a straightforward process, you might encounter some common problems:
String Not Dispensing
- Tangled string: If the string is tangled on the spool, it might not dispense correctly. Remove the string head cover and untangle the string.
- String too short: Ensure that you have left enough string to reach the spool’s guide holes.
String Head Won’t Open
- Clogged string head: If the string head is clogged with grass clippings or debris, it might not open properly. Clean out the string head with a small brush or vacuum cleaner.
String Breaks Frequently
- Incorrect string type: Make sure you are using the correct type and diameter of string for your mower.
- Worn string head: If the string head is worn or damaged, it may not be able to hold the string properly. Consider replacing the string head if necessary.
Maintaining Your Lawn Mower String
To ensure your lawn mower string lasts longer and performs optimally, follow these maintenance tips:
- Replace the string regularly. Even with proper care, lawn mower string will eventually wear down. Replace it at the first sign of fraying or damage.
- Keep the string head clean. Clean out the string head after each use to prevent clogging and debris buildup.
- Inspect the string head for damage. Check the string head for any cracks, wear, or damage. Replace it if necessary.
Final Thoughts
Changing lawn mower string is a simple task that can save you time and money in the long run. By following the steps outlined in this guide, you can easily replace the string yourself and keep your lawn mower running smoothly. Remember to always prioritize safety, use the appropriate tools, and carefully follow the instructions for your specific model.
FAQs
1. What type of string should I use for my lawn mower?
The type of string you need depends on your lawn mower model and the type of grass you have. Check your owner’s manual for specific recommendations. Generally, round string works well for most lawns, while square string offers more cutting power and is ideal for thicker, tougher grasses.
You can also choose string made from different materials like nylon, which is durable and affordable, or braided string, which is known for its long lifespan and smooth cutting action.
2. When should I change the string in my lawn mower?
You should change your lawn mower string when it becomes worn, frayed, or tangled. This can usually be identified by a dull, uneven cut or difficulty in starting the mower. A good rule of thumb is to inspect your string every few uses or whenever you notice a decline in cutting performance.
If you are frequently encountering a jammed trimmer head, that can also be a sign that your string is too long, tangled, or worn out and needs replacement.
3. How do I remove the old string from my lawn mower?
The process of removing old string can vary slightly depending on your mower’s model. In most cases, you will need to locate a release button or lever on the trimmer head. Pressing this button will allow you to unwind the old string.
If your trimmer head does not have a release button, you might need to use a tool like a screwdriver or wrench to unscrew the head and remove the old string. Consult your owner’s manual for specific instructions.
4. How do I load new string into my lawn mower?
After removing the old string, you will need to insert the new string into the trimmer head. Start by threading one end of the string through the small holes at the bottom of the spool.
Wind the string around the spool, ensuring it is tightly packed and in the correct direction. Once the spool is full, you can close the trimmer head, making sure the string is securely held in place.
5. How do I adjust the length of my lawn mower string?
Many lawn mowers have a built-in string length adjustment feature. You can typically adjust the string length by pressing a button or pulling a lever on the trimmer head.
This will allow the string to extend to the desired length, usually around 1/4 to 1/2 inch.
6. What should I do if the string is too long?
If the string is too long, it can cause tangling, damage to your lawn, and even damage to the trimmer head itself. To fix this, you can simply shorten the string by pressing the string length adjustment button on your trimmer head.
If the trimmer head doesn’t have an adjustment feature, you can manually cut the excess string with a pair of scissors.
7. What are some common problems I might encounter when changing the string?
One common problem is difficulty in releasing the old string. If your trimmer head does not have a release button, you might need to use a tool to unscrew the head. Another issue can be a tangled string, which can be solved by carefully unwinding and re-winding the string onto the spool.
If you are having trouble with the string length adjustment, consult your owner’s manual or a professional for assistance.