The familiar “thwack” of a lawnmower’s pull cord is a sound of summer. It signifies a job well done, but what happens when that cord breaks? Replacing a broken lawnmower pull cord might seem daunting, but with the right tools and a little patience, it’s a simple fix. This comprehensive guide will walk you through every step of the process, from identifying the right parts to reassembling your lawnmower, so you can be back to mowing your pristine lawn in no time.
Overview:
This article will delve into the process of installing a new lawnmower pull cord. We’ll cover the necessary tools and materials, the steps involved in removing the old cord and installing the new one, and finally, some tips for preventing future cord breaks.
Understanding the Components
Before we dive into the installation process, it’s crucial to understand the parts involved in a lawnmower pull cord system. The pull cord consists of several key elements:
1. The Cord
The actual pull cord itself is typically made of durable nylon or rope. This is the part you grab and pull to start the engine.
2. The Recoil Spring
Located inside the recoil housing, the recoil spring stores the energy needed to quickly retract the cord after pulling. This provides the force necessary to turn the engine’s crankshaft.
3. The Starter Pawl
The starter pawl is a small metal piece that engages with the teeth on the crankshaft. This mechanism transfers the energy from the recoil spring to the engine, causing it to turn.
4. The Recoil Housing
The recoil housing is the plastic or metal casing that encloses the entire system. It houses the spring, the pawl, and the cord.
Tools and Materials
To successfully install a new pull cord, you’ll need a few basic tools:
- Phillips Head Screwdriver: For removing and securing screws on the recoil housing.
- Flat Head Screwdriver: Depending on the model, you may need this to remove specific screws.
- Adjustable Wrench: To loosen and tighten nuts, particularly for older lawnmowers.
- New Pull Cord: Purchase a cord specifically designed for your lawnmower model.
- Gloves (Optional): Recommended for protecting your hands from sharp edges or dirt.
Removing the Old Pull Cord
Now that you have the necessary tools, you can start dismantling the old pull cord system:
1. Disconnect the Spark Plug Wire
Always disconnect the spark plug wire before working on any internal engine components. This prevents accidental sparking and potential injury.
2. Remove the Recoil Housing
Locate the recoil housing, usually found on the engine’s side. Identify the screws holding the housing in place and carefully remove them using a Phillips or flat head screwdriver.
3. Disengage the Cord from the Recoil Housing
Once the housing is removed, you’ll see the cord connected to the recoil mechanism. There will usually be a small clip or a groove holding the cord in place. Gently pull the cord away from the housing, releasing it from the mechanism.
4. Remove the Recoil Spring
Depending on your mower’s model, the spring may be directly accessible after removing the housing, or it may require further disassembly. Refer to your lawnmower’s manual for specific instructions. The spring will likely be under tension, so be cautious during removal.
5. Remove the Starter Pawl
The starter pawl is often secured by a pin or clip. Carefully remove the pawl, taking note of its position and orientation for reassembly later.
Installing the New Pull Cord
With the old cord removed, you can now install the new one:
1. Connect the New Cord to the Recoil Housing
Thread the new cord through the recoil housing, ensuring it is properly guided through any internal slots or guides. Secure the cord using the clip or groove provided in the housing.
2. Reinstall the Starter Pawl
Carefully reinsert the starter pawl into its original position, ensuring it’s properly engaged with the housing and the recoil mechanism.
3. Reinstall the Recoil Spring
Carefully reassemble the recoil spring, making sure it’s correctly positioned and secured. Pay attention to the spring’s direction and orientation.
4. Reinstall the Recoil Housing
Place the recoil housing back onto the engine, aligning the holes with the screw holes. Secure the screws using your screwdriver.
5. Reconnect the Spark Plug Wire
Carefully reconnect the spark plug wire to the spark plug, ensuring a secure connection.
Testing the New Pull Cord
After reassembly, it’s crucial to test the new pull cord to ensure proper functionality:
- Pull the cord gently a few times: This will ensure that the cord is properly engaged and that the recoil spring is working as intended.
- Attempt to start the engine: If the engine starts smoothly, your installation was successful!
Tips for Preventing Future Cord Breaks
While a new pull cord can revitalize your lawnmower, taking preventative measures can prolong its life:
- Proper Storage: Store your lawnmower in a dry, clean area during the off-season. Avoid exposing it to harsh elements that can damage the cord.
- Regular Maintenance: Check the pull cord periodically for signs of wear or fraying. Replace it before it breaks to avoid potential problems.
- Use Proper Pulling Technique: When starting the engine, pull the cord smoothly and steadily. Avoid jerking or yanking the cord, which can cause stress and damage.
Conclusion
Installing a new pull cord on a lawnmower is a relatively simple task that can be accomplished with basic tools and a little patience. By following the steps outlined in this guide, you can effectively repair your lawnmower and be back to mowing your lawn in no time. Remember to take precautions and test the new cord thoroughly to ensure a smooth start and a long-lasting performance. And don’t forget the importance of regular maintenance and proper storage to prevent future cord breaks.
Frequently Asked Questions
What tools do I need to install a lawn mower pull cord?
You will need a few basic tools to install a lawn mower pull cord. These include a Phillips screwdriver, a pair of pliers, and a small flat-head screwdriver. You may also need a pair of wire cutters if the old pull cord is stuck in the starter assembly. It’s important to have the right tools on hand before you begin working on your lawn mower. This will ensure that you have everything you need to complete the job quickly and efficiently.
Additionally, make sure you have a new pull cord. It’s recommended to buy a replacement cord that is compatible with your specific lawn mower model. You can find these cords at most hardware stores or online retailers. Once you have all the necessary tools and materials, you can start working on your lawn mower.
How do I remove the old pull cord?
Removing the old pull cord from the starter assembly is the first step. To do this, you will need to locate the retaining nut, which is usually located on the outside of the starter assembly. Once you have found it, use the pliers to loosen and remove the nut. This will allow you to pull the old cord out of the starter assembly. Be careful not to damage any of the surrounding components while doing this.
It’s important to note that sometimes the old cord might be stuck inside the starter assembly. If this happens, you may need to use a pair of wire cutters to carefully cut the cord close to the starter assembly. Once the cord has been removed, you can begin installing the new pull cord.
How do I install the new pull cord?
Installing the new pull cord is a straightforward process. First, thread the new pull cord through the starter assembly, starting from the bottom. Then, guide the cord through the guide holes on the starter housing. Ensure that the cord is properly positioned and routed through all the necessary holes. This will help prevent the cord from getting tangled or becoming loose during use.
Once the cord is threaded through the assembly, you can attach the handle to the cord. This is done by inserting the cord through the handle and then securing it with the provided nut or clip. Make sure the handle is securely attached to the cord before you proceed to the next step.
How do I adjust the tension on the pull cord?
Adjusting the tension on the pull cord is crucial for ensuring optimal performance. There are two primary methods to achieve this. The first method involves using the tension spring located on the starter assembly. By adjusting the spring, you can control the force required to pull the cord and ensure proper engagement with the engine.
The second method involves adjusting the length of the cord itself. You can do this by manually pulling on the cord and adjusting the length until the desired tension is achieved. Remember to tighten the retaining nut to secure the cord in place after making any adjustments. By adjusting the tension, you can ensure that your lawnmower starts smoothly and efficiently.
How do I know if the pull cord is properly installed?
Once the new pull cord is installed, it’s essential to check its functionality and ensure it’s properly secured. To do this, pull the cord a few times. It should retract smoothly and without any resistance. If it doesn’t, check the installation and make sure the cord is correctly routed through the starter assembly and the handle.
Additionally, you should hear a click when the cord is pulled fully. This indicates that the starter mechanism is engaging correctly. If you don’t hear a click or if the cord feels loose or doesn’t retract properly, you may need to readjust the cord tension or re-install the cord.
What are some common mistakes to avoid when installing a lawn mower pull cord?
There are a few common mistakes that people make when installing a lawn mower pull cord. One of the most common mistakes is failing to properly route the cord through the starter assembly. This can lead to the cord becoming tangled or loose, which can make it difficult to start the mower.
Another common mistake is failing to adjust the tension on the pull cord. This can lead to the cord being too loose or too tight, both of which can prevent the mower from starting. Finally, make sure the retaining nut is properly tightened after installing the new cord to prevent it from becoming loose during operation. By avoiding these common mistakes, you can ensure that the installation process is smooth and successful.
What do I do if the pull cord breaks again?
If the pull cord breaks again, you will need to repeat the installation process. However, before you do, it’s important to check the starter assembly for damage. If the starter assembly is damaged, it may need to be replaced. If the starter assembly is in good condition, the problem may be with the pull cord itself.
In this case, you can try a different brand of pull cord or a different type of cord altogether. Some pull cords are designed to be more durable than others. If you are still having trouble, you may need to contact a lawn mower repair shop for assistance.