A broken pull cord can strand your mower, but the repair is often simpler than it seems. Learning how to fix lawn mower pull cord is a basic skill that saves you time and money. You can usually complete the job in under an hour with common tools. This guide will walk you through the entire process, from diagnosis to the final pull.
Before you start, gather your tools. You will likely need a socket or wrench set, screwdrivers, needle-nose pliers, and a replacement cord. Always disconnect the spark plug wire for safety. Let’s get your mower running again.
How To Fix Lawn Mower Pull Cord
The core process for fixing a pull cord involves accessing the recoil starter assembly, removing the old cord, and installing a new one. While designs vary slightly between mower brands, the fundamental steps are the same. Follow this structured approach to ensure a smooth repair.
Diagnosing The Problem
First, identify what’s actually wrong with the pull cord. The symptoms will guide your repair. A cord that snaps and retracts completely into the housing needs a full replacement. If the cord is just frayed but still attached, you might be able to re-knot it. A cord that pulls out but doesn’t retract usually indicates a broken recoil spring.
Sometimes, the problem isn’t the cord at all. If the engine is seized, the cord won’t pull. Try turning the mower blade by hand (with the spark plug disconnected) to check. If it won’t budge, you have a bigger engine issue.
Common Pull Cord Failures
- Complete Break: The cord snaps, and the handle flies off.
- Fraying at the Handle: The cord is worn but still functional for now.
- Broken Recoil Spring: The cord pulls out but does not wind back in.
- Jammed Pulley: The cord is stuck and will not pull at all.
Tools And Parts You Will Need
Having the right materials ready makes the job faster. You can find a universal replacement pull cord at any hardware or lawn care store. Make sure to check the thickness and length against your old cord.
- Replacement pull cord (measure old cord or consult manual)
- Socket wrench set or combination wrenches
- Phillips and flat-head screwdrivers
- Needle-nose pliers
- Safety gloves (to protect your hands from sharp edges)
- A pair of scissors or a knife
Step-By-Step Repair Guide
This section provides detailed instructions for the most common repair: replacing a completely broken pull cord. Work on a clean, flat surface and keep track of all screws and parts.
Step 1: Safety First And Access The Recoil Assembly
Always disconnect the spark plug wire. This prevents the engine from accidentally starting. Next, remove the plastic shroud or cover that houses the pull starter. This usually involves removing three to six screws around the top of the engine. Carefully lift the shroud off.
Step 2: Remove The Starter Assembly
With the shroud off, you’ll see the recoil starter assembly. It is typically held to the engine by three bolts. Use your socket wrench to remove these bolts. Gently lift the entire assembly away from the engine. You may need to wiggle it slightly to free it.
Step 3: Release Tension And Remove The Old Cord
This step requires caution. The recoil spring inside is under tension. Place the assembly on your work surface. Slowly let the pulley rotate, allowing the spring’s tension to release completely. You may hear a clicking sound as it unwinds. Once all tension is gone, you can remove the knot holding the old cord from the pulley’s anchor hole. Pull the cord out of the housing.
Step 4: Prepare And Install The New Cord
Cut your new cord to the same length as the old one, leaving a little extra for the knots. Tie a secure knot at one end of the cord. A figure-eight or double overhand knot works well. Feed the un-knotted end through the exit hole in the starter housing and then through the hole in the pulley. Pull it through until the knot seats against the pulley.
Step 5: Wind The Spring And Pulley
This is the trickiest part. You need to wind the pulley in the direction that tensions the spring. This is usually clockwise. Turn the pulley by hand the number of turns specified in your manual (often 3-4 full turns). You’ll feel the spring getting tighter. Stop when the pulley’s cord hole aligns with the exit hole in the housing.
Step 6: Thread The Cord And Reassemble
While holding the pulley to prevent it from spinning back, thread the free end of the cord out through the housing’s exit hole. Pull several inches of cord out. Reattach the pull handle using a secure knot. Slowly release the pulley, allowing it to wind the cord onto the spool. Test the retraction a few times. Finally, rebolt the starter assembly to the engine and replace the shroud.
What To Do If The Recoil Spring Is Broken
If your cord pulls out but doesn’t retract, the recoil spring is likely broken. Fixing this is more involved. You must open the recoil assembly casing, often held together by small screws or a central clip. Carefully remove the old spring and replace it with an identical new one. Wear gloves, as the spring can snap. Many people find it easier and safer to replace the entire recoil starter assembly as a unit if the spring is broken.
Preventive Maintenance Tips
Regular care can prevent many pull cord issues. A little attention goes a long way in extending the life of your starter system.
- Clean around the pull cord housing regularly to prevent grass and dirt buildup.
- Lubricate the recoil spring and pulley pivot point once a season with a light machine oil.
- Inspect the cord for fraying every few months and replace it at the first sign of wear.
- Always pull the cord straight out, not at an angle, to reduce stress on the cord and handle.
- Store your mower in a dry place to prevent rust and corrosion on the spring.
Troubleshooting Common Issues
Even after a repair, you might encounter some problems. Here are solutions to frequent issues.
Cord Retracts Too Slowly Or Gets Stuck
This usually means the recoil spring was not wound enough or is getting weak. The cord may also be getting pinched in the housing. Disassemble and check the spring tension and the cord’s path. Ensure the cord is winding evenly onto the spool.
Handle Hits The Housing Before Full Pull
The cord is too long. You need to shorten it. Untie the knot at the handle, cut the cord to a proper length, and re-tie the knot. Leave enough cord for a full, comfortable pull.
Starter Assembly Makes A Grinding Noise
Dirt or debris inside the housing can cause grinding. A damaged or misaligned pulley can also be the culprit. Disassemble, clean all parts throughly, and inspect the plastic pulley for cracks or worn teeth.
FAQ Section
Here are answers to some common questions about lawn mower pull cord repairs.
How Much Does It Cost To Fix A Lawn Mower Pull Cord?
Doing it yourself costs very little. A universal replacement pull cord kit is typically between $5 and $15. If you take it to a small engine repair shop, the cost might range from $50 to $100 for labor and parts.
Can You Repair A Frayed Pull Cord Without Replacing It?
You can temporarily fix a frayed cord by tying a new knot below the frayed section, but this shortens the cord. It’s a short-term fix. For safety and reliability, replacing the entire cord is the best option.
Why Does My Pull Cord Keep Breaking?
Frequent breakage can be caused by a misaligned or damaged pulley that cuts the cord, a weak or overtightened recoil spring, or simply using a cord that is too thin for your mower’s engine. Check the pulley for sharp edges and ensure you’re using the correct replacement part.
Is It Difficult To Replace A Recoil Spring?
Replacing just the spring is more challenging than replacing the cord. The spring is under tension and can be difficult to handle. For many DIYers, replacing the entire recoil starter assembly is a simpler and safer solution, though slightly more expensive.
How Do I Find The Right Replacement Pull Cord?
You can take the old cord to a hardware store to match its diameter and length. Alternatively, find your mower’s model number (usually on a decal on the engine or deck) and search for a compatible part online or ask at a dealership. Universal kits often work for many models.
Fixing a lawn mower pull cord is a straightforward DIY task. By following these steps, you can avoid a costly service call and get back to mowing quickly. Remember to work safely, take your time with the spring tension, and use the correct parts. With a little patience, you’ll have a smoothly retracting cord ready for the next season.