The smell of freshly cut grass, the satisfying whir of the engine, and the feeling of accomplishment as your lawn transforms into a manicured masterpiece – these are all part of the joy of owning a lawn mower. But what happens when that joyful experience is interrupted by a frustratingly stubborn pull string?
This article will guide you through the common culprits behind a broken lawn mower pull string and offer solutions to get you back to mowing in no time. We’ll cover the different components of the pull start system, how to diagnose the problem, and provide step-by-step instructions on how to fix it. Whether you’re a seasoned lawn care enthusiast or a novice homeowner, this guide will equip you with the knowledge and tools to tackle this common lawn mower issue.
What Causes a Broken Lawn Mower Pull String?
A broken pull string can be attributed to several factors:
- Worn or Broken String: The string itself can wear out from repeated use or simply snap if it’s pulled too hard.
- Worn or Broken Spring: The spring that retracts the string can weaken over time and fail to pull the string back properly.
- Stuck or Worn Recoil Starter: The recoil starter mechanism, which houses the string and spring, can become stuck or worn out, preventing the string from operating correctly.
- Damaged or Worn Pawl: The pawl, a small metal piece that engages with the flywheel, can become damaged or worn, preventing the engine from starting.
Step-by-Step Guide to Fix Your Lawn Mower Pull String
1. Assess the Damage:
Before diving into repairs, it’s essential to identify the source of the problem.
- Inspect the String: If the string is frayed, broken, or completely missing, you’ll need to replace it.
- Check the Spring: If the string is not retracting smoothly, or the spring feels weak, it may need to be replaced.
- Examine the Recoil Starter: Inspect the recoil starter for any signs of damage, like cracks or missing parts.
2. Replacing the Pull String:
a) Removing the Old String:
- Locate the Recoil Starter: It’s usually located on the engine’s side.
- Identify the Spring: Look for the coiled spring attached to the recoil starter.
- Remove the Recoil Starter Housing: Depending on your mower, you might need to remove screws or clips securing the housing.
- Release the String: With the housing removed, you can usually pull the old string out.
b) Installing the New String:
- Purchase a Replacement String: Make sure it’s compatible with your mower model.
- Thread the New String: Thread the new string through the recoil starter mechanism, following the path of the old string.
- Secure the String: Once it’s threaded, secure the string to the appropriate spot on the recoil starter (usually a small hook or groove).
- Reassemble the Housing: Secure the recoil starter housing back in place.
3. Replacing the Spring:
a) Removing the Old Spring:
- Follow the instructions for removing the recoil starter housing.
- Locate the Spring Attachment Points: The spring will be attached to two points on the recoil starter.
- Carefully Detach the Spring: You’ll likely need to use pliers to release the spring from the attachment points.
b) Installing the New Spring:
- Purchase a Compatible Spring: Make sure it’s designed for your lawn mower model.
- Attach the New Spring: Carefully connect the new spring to the attachment points on the recoil starter.
- Check Spring Tension: The spring should be taut but not overly tight.
4. Fixing a Stuck or Worn Recoil Starter:
a) Cleaning the Recoil Starter:
- Remove the Recoil Starter Housing: Follow the steps mentioned earlier.
- Clean the Mechanism: Use compressed air or a small brush to remove any debris or dirt from the recoil starter’s inner workings.
- Lubricate the Parts: Apply a light lubricant (like WD-40) to the moving parts.
- Reassemble the Housing: Securely reassemble the recoil starter housing.
b) Replacing the Recoil Starter:
- Purchase a Compatible Recoil Starter: Make sure it’s designed for your lawn mower model.
- Remove the Old Recoil Starter: Follow the steps mentioned earlier.
- Install the New Recoil Starter: Carefully install the new recoil starter according to your lawn mower’s manual.
5. Addressing a Damaged or Worn Pawl:
a) Inspecting the Pawl:
- Remove the Recoil Starter Housing: Follow the steps mentioned earlier.
- Locate the Pawl: The pawl is usually a small metal piece attached to the recoil starter’s mechanism.
- Inspect for Damage: Look for any signs of wear, damage, or broken teeth on the pawl.
b) Replacing the Pawl:
- Purchase a Compatible Pawl: Make sure it’s designed for your lawn mower model.
- Remove the Old Pawl: Carefully remove the old pawl.
- Install the New Pawl: Carefully install the new pawl in its designated location on the recoil starter.
6. Testing the Repair:
After making any repairs, test the pull string by giving it a gentle pull. If it retracts smoothly and you hear a click as the pawl engages, you’ve successfully fixed the problem.
7. Troubleshooting Additional Issues:
If the pull string is still not working properly, consider these additional factors:
- Engine Problems: A faulty engine could be preventing the pull string from working correctly.
- Fuel System Issues: A clogged fuel filter or carburetor can hinder engine starting and affect the pull string.
Important Safety Tips:
- Disconnect the Spark Plug: Before working on the pull string, always disconnect the spark plug to prevent accidental starting.
- Wear Protective Gear: Safety glasses, gloves, and appropriate clothing are essential for protecting yourself during repairs.
- Follow Manufacturer’s Instructions: Always consult your lawn mower’s owner’s manual for specific instructions and safety precautions.
Conclusion:
Fixing a broken lawn mower pull string is a common DIY task that can be accomplished with a few simple tools and a bit of patience. By following the steps outlined in this guide and understanding the underlying causes of the problem, you’ll be able to get your lawn mower back in working order and back to enjoying your pristine lawn in no time. Remember to prioritize safety by disconnecting the spark plug, wearing protective gear, and consulting your owner’s manual for specific instructions.
FAQs
1. How do I know if my pull string is broken?
If your pull string is broken, you’ll likely notice that it’s either completely detached from the engine or that it doesn’t retract properly. You might also hear a snapping sound when you attempt to start the mower. If the string feels loose or frayed, it’s a good indication that it needs to be replaced.
Additionally, if you’re having difficulty starting your lawnmower, even after multiple pulls, it’s worth inspecting the pull string to see if it’s the culprit. A broken or damaged pull string can prevent the engine from getting the proper amount of force to start.
2. What tools do I need to fix a pull string?
To fix a broken pull string, you’ll need a few basic tools, such as a screwdriver, pliers, and a new pull string. The specific tools needed will vary depending on the type of lawnmower and the nature of the damage. For instance, if the pull string is detached from the recoil starter, you’ll need a screwdriver to remove the housing cover. If the string is frayed or broken, you’ll need pliers to cut off the damaged section.
It’s always a good idea to have a pair of safety glasses and work gloves on hand when working with any type of machinery. Additionally, you may need a small hammer or mallet to help secure the new pull string in place.
3. How long does it take to fix a pull string?
The time it takes to fix a pull string varies depending on the complexity of the repair. If the string is simply detached, it might only take a few minutes to reconnect it. However, if the string is broken or frayed, you’ll need to replace it, which can take a bit longer.
On average, it should take no more than 30 minutes to fix a broken pull string. If you’re comfortable with basic repairs and have all the necessary tools, you can easily complete this task in under an hour. However, if you’re unfamiliar with the process or are struggling with any of the steps, it might be a good idea to consult a professional mechanic.
4. Can I use any type of string for my lawnmower?
It’s important to use the correct type of pull string for your lawnmower. The string should be compatible with your specific model and have the appropriate length and thickness. Using the wrong type of string can lead to damage to your lawnmower’s engine or other components.
To ensure compatibility, you can consult your owner’s manual or contact the manufacturer directly. You can also find replacement pull strings at most hardware stores and online retailers. When purchasing a replacement string, be sure to note the model number of your lawnmower and verify that the string is compatible.
5. What should I do if the pull string keeps breaking?
If your pull string keeps breaking, it’s a sign that there may be an underlying issue with your lawnmower. The problem could be caused by a worn or damaged recoil starter, a misaligned pull string, or even a problem with the engine itself.
It’s important to diagnose the root cause of the repeated breakage. This may involve inspecting the recoil starter, the pull string assembly, and the engine. If you’re unsure how to diagnose the problem, it’s best to take your lawnmower to a qualified mechanic for inspection and repair.
6. How do I prevent my pull string from breaking in the future?
To prevent your pull string from breaking in the future, it’s important to follow a few simple tips. First, ensure that you’re using the correct type of pull string for your lawnmower. Secondly, avoid pulling the string too forcefully or rapidly, as this can put unnecessary stress on the string and the recoil starter.
It’s also a good idea to regularly inspect your pull string for any signs of wear or damage. If you notice any fraying or weakening, replace the string immediately. By taking these simple precautions, you can help to extend the life of your pull string and keep your lawnmower running smoothly.
7. Is it better to buy a new lawnmower instead of fixing the pull string?
Replacing a broken pull string is a relatively simple and affordable repair, often costing less than $10 for a new string. This is significantly cheaper than purchasing a new lawnmower. Unless the lawnmower is very old or has other significant problems, repairing the pull string is the most cost-effective option.
However, if the lawnmower is very old or has other significant problems, replacing it might be the more practical option. If you’re facing repeated repairs or the lawnmower is nearing the end of its lifespan, investing in a new mower might be the best long-term solution.