Imagine this: you’re ready to tackle your overgrown lawn, only to discover your trusty lawn mower won’t start. You pull the recoil cord, but it feels loose, floppy, or even snaps back with no resistance. The culprit? A broken pull string.
This article will guide you through the process of fixing a broken pull string on your lawn mower, covering everything from identifying the problem to re-stringing your mower. We’ll explore common causes for a broken pull string, demonstrate the proper tools and techniques, and provide tips for preventing future issues. Get ready to unleash your lawn mower’s power once again!
Understanding the Pull String Mechanism
The pull string, also known as the recoil cord, is a crucial part of your lawn mower’s starting system. It’s connected to a spring inside the engine housing that, when pulled, engages the engine’s flywheel. This rotation then triggers the spark plug to ignite the fuel-air mixture, starting the engine.
A broken pull string can be caused by a variety of factors, including:
- Wear and tear: Over time, the string can become frayed, brittle, or stretched.
- Improper use: Pulling the string too forcefully or abruptly can damage the string or the internal mechanism.
- External damage: A hit or impact to the mower can break the string or damage the pull start assembly.
Identifying the Problem
Before diving into repairs, it’s crucial to pinpoint the exact issue with your pull string. Here’s how:
1. Check for Obvious Signs of Damage:
- Frayed or broken string: Inspect the string for visible signs of wear or damage.
- Loose or floppy cord: If the string feels loose or doesn’t offer any resistance, it might have come detached from the internal mechanism.
2. Test the Recoil Mechanism:
- Pulling the cord: Gently pull the cord. If it doesn’t pull smoothly or feels stiff, the issue could be related to the internal spring mechanism or a blockage.
- Listen for sounds: Pay attention to any unusual noises or grinding sounds.
Tools and Supplies You’ll Need
- Replacement pull string: This is a crucial part for your repair. Choose a string that matches the length and thickness of the original. You can find replacement pull strings at most hardware stores or online retailers.
- Scissors or wire cutters: For cutting the string to the correct length.
- Phillips screwdriver: You’ll likely need this to access the pull start assembly.
- Gloves: Protecting your hands during the repair process.
Repairing a Broken Pull String: Step-by-Step Guide
Now, let’s tackle the repair itself. The process may vary slightly depending on your lawn mower model, but the basic steps are similar.
1. Accessing the Pull Start Assembly
- Locate the pull start housing: This is typically found on the top or side of the engine, near the recoil cord.
- Remove any covers or screws: Depending on your model, there might be a cover or a few screws securing the pull start housing. Use your Phillips screwdriver to remove these fasteners.
2. Removing the Old Pull String
- Locate the string’s attachment point: You’ll need to find where the string is connected to the internal mechanism. This could be a hook, a slot, or a small hole.
- Carefully remove the string: Gently pull the string away from the attachment point, taking care not to damage the mechanism.
3. Installing the New Pull String
- Thread the string through the pull start assembly: Follow the path of the old string, threading the new string through the same holes, slots, or hooks.
- Secure the string: Once the string is threaded through the assembly, secure it by attaching it to the internal mechanism. The attachment method will vary depending on the design of your mower.
4. Reassemble the Pull Start Housing
- Attach the pull start housing: Reinstall any covers or screws you removed earlier, ensuring they are securely fastened.
- Test the pull string: Gently pull the string several times to ensure it’s properly attached and moves smoothly.
Preventing Future Pull String Breakage
- Use the proper pulling technique: Pull the cord smoothly and consistently, avoiding jerking or abrupt movements.
- Regular maintenance: Inspect the pull string regularly for signs of wear or damage. Replace it as needed.
- Handle the mower with care: Avoid dropping or bumping the mower, as this can damage the pull start assembly.
Additional Tips for Pull String Repairs
- Consider lubrication: After installing a new pull string, you can apply a light lubricant, such as silicone spray, to the string and internal mechanism to reduce friction and extend its life.
- Replace the spring: If the pull string is damaged, the internal spring might also be worn or broken. Replacing the spring might be necessary for optimal performance.
- Seek professional help: If you’re unsure about the repair process or encounter difficulties, consult a qualified lawn mower technician for assistance.
Conclusion
Fixing a broken pull string on your lawn mower is a relatively simple task that can be accomplished with the right tools and some patience. By following these steps and implementing preventive measures, you can ensure your lawn mower starts smoothly and efficiently for years to come. Remember, regular maintenance and careful use are key to avoiding future issues. With a little effort, you can keep your lawn mower running like new and conquer your lawn with ease!
Frequently Asked Questions
How do I know if my pull string is broken?
If your lawnmower is difficult to start, or if the pull cord doesn’t recoil properly after you pull it, your pull string might be broken. You can also check for a frayed or broken string by looking at the end of the pull cord.
What tools do I need to fix a pull string?
You’ll need a few basic tools to fix a pull string, including: a screwdriver, a pair of pliers, a new pull string, and a small pair of scissors. It’s always a good idea to have a clean rag handy for wiping up any debris.
Where can I buy a replacement pull string?
Replacement pull strings are readily available at most hardware stores, home improvement centers, and online retailers. You can find them in various lengths and materials, so make sure to choose one that’s compatible with your specific lawnmower model.
How do I remove the old pull string?
To remove the old pull string, you’ll need to access the recoil mechanism under the engine cover. This usually involves removing a few screws or bolts. Once you have access to the mechanism, gently pull the old string out of the hole and detach it from the starter rope.
How do I install the new pull string?
To install the new string, feed the end of the string through the hole in the recoil mechanism. Make sure the string is threaded through the starter rope and then secure it with a knot or a small piece of tape. It’s important to tighten the knot or tape to ensure the string stays in place.
What do I do if the new pull string is too short or too long?
If the new pull string is too short, it might not be long enough to pull the engine starter rope all the way. If it’s too long, it might get tangled or snag. It’s important to choose a string that’s the right length for your lawnmower model. You can usually find the correct length listed in your lawnmower’s manual.
What should I do if I can’t fix the pull string myself?
If you’re not comfortable fixing the pull string yourself, or if you’re unable to find the right replacement string, it’s best to take your lawnmower to a qualified repair shop. A mechanic can diagnose the problem and make the necessary repairs.