The roar of a lawnmower engine, the scent of freshly cut grass – there’s nothing quite like the feeling of a well-maintained lawn. But what happens when that familiar pull cord gives out, leaving you stranded with a stubborn mower? Don’t despair! Replacing a pull cord is a simple DIY task that even novice mechanics can handle. This comprehensive guide will walk you through the process, from identifying the right cord to installing it with confidence.
Replacing a pull cord is a relatively straightforward process involving a few simple steps. This article will cover identifying the type of cord you need, gathering necessary tools, preparing your lawnmower, and finally, installing the new pull cord.
Identifying Your Pull Cord Type
Before heading to the hardware store, it’s crucial to identify the correct type of pull cord for your lawnmower. Here’s a quick breakdown:
1. Rope Material: Common materials include nylon, polypropylene, and Kevlar. Nylon offers a good balance of strength and durability, while Kevlar is exceptionally strong but might be more expensive.
2. Rope Diameter: The thickness of the rope is crucial. Too thin, and it might break easily; too thick, and it could get stuck in the recoil assembly. Measure the existing cord’s diameter to ensure you get the right size.
3. Length: Determine the appropriate length by measuring from the recoil housing to the end of the pull cord handle. You may find it helpful to add a couple of inches for extra slack.
Understanding the Pull Cord System
The pull cord system on your lawn mower comprises several key components:
Recoil Starter Housing:
This houses the entire pull cord mechanism, including the spring and the recoil assembly. It’s typically made of plastic or metal and attached to the engine.
Recoil Spring:
This spring stores energy when you pull the cord, and releases it to turn the engine’s crankshaft.
Recoil Assembly:
This assembly connects the pull cord to the spring and rotates the crankshaft when the cord is released. It often features a pawl mechanism that engages with the crankshaft.
Pull Cord Handle:
This is the part you grip to pull the cord, and it’s usually attached to the rope through a loop.
Gathering the Right Tools
Once you’ve identified the correct pull cord, you’ll need a few basic tools to complete the replacement:
- Screwdriver: Choose a screwdriver that matches the screws holding the recoil housing.
- Wire Cutters: For trimming the old cord and cutting the new one to length.
- Utility Knife: Useful for removing the old pull cord from the recoil assembly.
- Pliers: Might be needed to adjust or tighten the recoil assembly.
Preparing Your Lawn Mower
Before beginning the replacement process, it’s important to take a few safety precautions:
- Disconnect the Spark Plug: Always disconnect the spark plug wire to prevent accidental starting.
- Clear the Area: Work in a well-lit and clean area, ensuring that no obstructions are around the mower.
- Wear Eye Protection: Wear safety glasses to protect your eyes from any flying debris.
Replacing the Pull Cord: Step-by-Step Guide
With the necessary tools and safety precautions in place, you’re ready to replace the pull cord:
Step 1: Remove the Recoil Housing
- Locate the screws: Look for screws securing the recoil housing. They might be located on the sides or bottom of the housing.
- Remove the screws: Use your screwdriver to loosen and remove the screws holding the housing in place.
- Remove the housing: Gently pull the housing off the engine, taking care not to damage any surrounding parts.
Step 2: Release the Old Cord
- Locate the cord attachment: The old cord is typically secured to the recoil assembly with a loop, clip, or spring.
- Remove the old cord: Carefully release the cord from its attachment, using the utility knife if necessary.
- Cut the old cord: Use wire cutters to remove the old cord from the engine.
Step 3: Prepare the New Cord
- Measure the cord: Measure the distance from the recoil housing to the end of the pull cord handle, adding a couple of inches for slack.
- Cut the cord: Use wire cutters to cut the new cord to the desired length.
Step 4: Attach the New Cord
- Insert the cord: Thread the new cord through the opening in the recoil assembly, making sure it’s properly routed.
- Secure the cord: Attach the cord to the recoil assembly using the same method as the old cord.
Step 5: Reassemble the Recoil Housing
- Secure the housing: Gently reattach the recoil housing to the engine, aligning it properly.
- Tighten the screws: Use your screwdriver to tighten the screws securing the housing to the engine.
Step 6: Test the Pull Cord
- Reconnect the spark plug: Re-attach the spark plug wire.
- Test the pull cord: Gently pull the cord a few times to ensure it operates smoothly and engages the starter properly.
- Adjust as needed: If the cord feels too loose or too tight, you may need to adjust the tension on the recoil assembly.
Troubleshooting and Common Problems
- Cord Sticks or Jams: Ensure the cord is routed correctly through the recoil assembly and that it isn’t snagged on any parts.
- No Spark: Check the spark plug and ignition system to ensure they are working properly.
- Engine Doesn’t Turn Over: Verify that the recoil assembly is properly connected and engaging the crankshaft.
Maintenance Tips
- Lubricate the Recoil Assembly: Regularly lubricate the recoil assembly with a light oil or lubricant to prevent wear and tear.
- Inspect the Cord: Periodically inspect the pull cord for signs of fraying or damage. Replace it if needed.
- Avoid Excessive Pulling: Pulling the cord excessively can damage the recoil assembly.
Final Thoughts
Replacing a pull cord on your lawnmower is a simple DIY task that can save you time and money. By following these steps and using the right tools and precautions, you can ensure that your mower starts reliably and effortlessly. Remember to always prioritize safety, and if you’re unsure about any part of the process, it’s best to seek professional help.
FAQ
What tools do I need to replace my lawnmower pull cord?
You’ll need a few basic tools to replace your lawnmower pull cord. First, you’ll need a Phillips-head screwdriver and a pair of pliers. These tools will be used to remove and reinstall the screws and nuts that hold the pull cord in place. You’ll also want a new pull cord, which you can find at most hardware stores or online.
It’s also a good idea to have some WD-40 or another lubricant on hand. This will help to lubricate the pull cord mechanism and prevent it from binding up. Finally, you’ll need a pair of gloves for protection.
What is the process for removing the old pull cord?
To start, unplug the spark plug wire to ensure safety. Next, locate the pull cord assembly on the engine of your lawnmower. It is usually located on the top or side of the engine and has a plastic or metal handle attached. Use a screwdriver to remove any screws or nuts that hold the pull cord assembly in place.
Once the screws or nuts are removed, carefully pull the old pull cord out of the assembly. There may be a small metal clip or spring that holds the pull cord in place, so you may need to use pliers to remove it. Once the old pull cord is removed, you can discard it.
How do I connect the new pull cord to the assembly?
Once the old pull cord is removed, you’re ready to install the new one. The new pull cord should come with instructions, but the general process is to feed the new cord through the pull cord assembly, making sure it is fully inserted. The cord will likely have a small loop at one end, which goes over a hook or groove in the assembly.
Next, thread the other end of the cord through the handle, making sure it is also fully inserted. If there is a spring or clip, reattach it to the new pull cord. Finally, replace the screws or nuts that hold the pull cord assembly in place, ensuring they are tight.
How do I know if my new pull cord is installed correctly?
After installing the new pull cord, it’s important to test it to make sure it’s installed correctly. The easiest way to do this is to simply pull on the handle and see if the engine starts. If the engine starts, then the new pull cord is installed correctly and you’re good to go.
However, if the engine doesn’t start, there could be an issue with the installation or the cord itself. Check to ensure that the cord is correctly threaded through the assembly and handle. If the engine still doesn’t start, you may have a problem with the engine itself and will need to consult a repair manual or a professional mechanic.
Should I lubricate the new pull cord?
Yes, it is a good idea to lubricate the new pull cord with a light oil, such as WD-40, before you use it. This will help to prevent the cord from binding up and will also help to extend its lifespan.
To lubricate the pull cord, simply apply a small amount of oil to the cord itself and to the pull cord assembly. Be sure to wipe away any excess oil before you start using the lawnmower.
How often should I replace my lawnmower pull cord?
The frequency with which you need to replace your lawnmower pull cord depends on how often you use your mower and the quality of the cord. However, as a general rule of thumb, you should replace it every 2-3 years, or sooner if it starts to show signs of wear and tear.
Signs that your pull cord may need to be replaced include fraying, cracking, or becoming stiff. If you notice any of these signs, it’s best to replace the pull cord before it breaks altogether.
What should I do if my pull cord breaks while I’m mowing?
If your pull cord breaks while you’re mowing, the first thing you should do is stop the mower immediately. If the engine is still running, carefully unplug the spark plug wire to prevent the engine from starting accidentally.
Next, you’ll need to assess the situation. If the break is minor, you may be able to temporarily fix the pull cord by tying a knot in it. However, if the break is severe or if the cord is frayed, you’ll need to replace it. You can replace the cord yourself using the steps outlined above, or you can take your mower to a repair shop.