When your lawn mower’s rip cord snaps, the repair typically involves accessing the starter assembly. Learning how to fix rip cord on lawn mower is a common and manageable task for most homeowners. A broken pull cord can stop your mowing plans in their tracks, but you don’t need to be a mechanic to solve this problem. With some basic tools and patience, you can have your mower starting smoothly again.
This guide will walk you through the entire process, from diagnosis to the final pull. We’ll cover the tools you need, safety precautions, and detailed steps for the most common types of starter assemblies. You’ll save money on a service call and gain the satisfaction of a DIY fix.
How To Fix Rip Cord On Lawn Mower
The core process for fixing a rip cord is consistent across many mower brands like Toro, Honda, and Craftsman. You will need to remove the starter assembly, rewind or replace the spring, and install a new cord. Always start by disconnecting the spark plug wire to prevent any accidental engine starts. Safety first is the most important rule.
Tools And Parts You Will Need
Gathering the right items before you start makes the job smoother. You likely have most of these tools already in your garage.
- A new pull cord (lawn mower starter rope). Match the thickness and length to your old cord.
- Socket set and screwdrivers (flathead and Phillips).
- Needle-nose pliers and a pair of scissors or a sharp knife.
- A sturdy workbench or table to organize the parts.
- Safety glasses to protect your eyes from springs and debris.
- Light machine oil or grease for the spring coil.
Safety Precautions Before You Begin
Never skip these critical safety steps. A lawn mower blade is sharp and the engine can start unexpectedly if the spark plug is connected.
- Disconnect the spark plug wire. Pull the boot off the plug and secure it away from the terminal.
- Tip the mower on its side with the air filter and carburetor facing UP. This prevents oil and fuel from leaking where they shouldn’t.
- Allow the engine to cool completely if you have just been using the mower.
- Work in a well-lit area and keep your tools organized to avoid losing small parts.
Step-By-Step Repair Guide
Follow these steps carefully. Taking pictures with your phone before disassembly can help you remember how parts fit together.
Step 1: Access The Starter Assembly
Locate the starter housing on the top of your mower engine. It’s the plastic or metal cover with the pull handle on it. Use your socket set or screwdriver to remove the bolts or screws holding the cover in place. Some models have a central bolt under the pull handle itself that needs to be unscrewed. Gently lift the cover off to reveal the recoil spring and pulley inside.
Step 2: Remove The Old Broken Cord
You will see a pulley with the remaining piece of cord wrapped around it. Carefully lift the pulley out of the housing. Be extremely cautious, as a powerful recoil spring sits beneath it. The spring is pre-wound with tension. Use needle-nose pliers to unwind the knot or release the cord from its anchor point on the pulley. Take out the old cord completely.
Step 3: Wind The Recoil Spring (If Needed)
Sometimes when the cord snaps, the recoil spring loses its tension. To rewind it, place the spring and pulley back into the housing. Turn the pulley in the direction opposite of the cord pull (usually clockwise) until you feel resistance and hear a few clicks. This rewinds the spring. It’s a delicate process, so go slow to avoid the spring popping out.
Step 4: Install The New Pull Cord
Cut your new cord to the same length as the old one. Tie a secure knot at one end, like a figure-eight or double overhand knot. Feed the unknotted end through the hole in the pulley from the underside. Pull it through until the knot seats firmly. Then, wind the cord around the pulley groove in the direction opposite the spring’s tension. Leave about 6 inches of cord hanging out.
Step 5: Reassemble The Starter Housing
Place the pulley back into the housing, making sure it engages with the spring. Feed the free end of the cord through the hole in the starter cover. Reattach the pull handle using a secure knot. Before tightening the cover bolts, pull the cord slowly to ensure it retracts smoothly. If it does, secure the cover with all screws or bolts. Give the cord a few test pulls to check for smooth operation.
Troubleshooting Common Issues
Sometimes, things don’t go perfectly on the first try. Here are solutions to frequent problems.
Cord Does Not Retract
If the cord pulls out but doesn’t retract, the recoil spring likely isn’t engaged or has lost its tension. You will need to open the housing again and rewind the spring. Ensure the spring is properly seated in its track and that the pulley is correctly aligned.
Cord Retracts Too Quickly Or Jerkily
This usually indicates the spring is overwound or has too much tension. Disassemble and let the spring unwind slightly before reassembling. A small amount of light oil on the spring coil can also help smooth the action.
Starter Assembly Is Stuck Or Hard To Pull
This may not be a cord issue. Check that the engine itself isn’t seized. Try turning the mower blade by hand (with the spark plug disconnected). If the blade won’t turn, you have a bigger engine problem. Also, clean any debris or old, tangled cord from the pulley mechanism.
When To Call A Professional
While this repair is very doable, there are times when seeking help is the best choice.
- If the recoil spring is broken or has jumped out of its housing. These springs are under high tension and can be dangerous.
- If the starter housing or pulley itself is cracked or damaged and needs replacement.
- If after your repair, the cord still doesn’t work and you suspect a deeper engine issue.
- If you simply don’t feel comfortable working with mechanical assemblies.
Preventive Maintenance Tips
A little care can prevent future cord breaks and extend the life of your starter.
- Pull the cord straight out smoothly. Do not yank it at an angle.
- Occasionally clean the starter assembly to remove grass clippings and dirt.
- Lubricate the recoil spring pivot point with a drop of oil once a season.
- Store your mower in a dry place to prevent the cord from degrading due to moisture.
- Replace the cord at the first signs of fraying, don’t wait for it to snap.
Frequently Asked Questions
Can I Fix A Lawn Mower Pull Cord Without Replacing It?
If the cord has snapped, you must replace it. Temporary fixes like knotting it together are unsafe and unreliable. The knot will catch and likely break again immediately. If the cord is just frayed but intact, you can monitor it, but replacement is the safest long-term solution.
What Size Cord Do I Need For My Lawn Mower?
Pull cord size is determined by thickness (diameter) and length. Common diameters are 3/32″ or 1/8″. To find the length, measure your old cord or pull the new one all the way out on a working mower and add a few inches for knots. Your mower’s manual or a parts website will list the correct specifications.
Why Does My Rip Cord Keep Breaking?
Frequent breaks are often caused by pulling the cord at a sharp angle, which causes excessive wear on the housing edge. A damaged or dirty pulley can also fray the cord quickly. Check for rough spots on the cord exit hole and smooth them with a file. Also, ensure you are using a cord rated for lawn mower starters.
How Much Does It Cost To Fix A Lawn Mower Pull Cord?
Doing it yourself costs very little, usually between $5 and $15 for a new cord and handle kit. If you take the mower to a small engine repair shop, the cost can range from $50 to $100 for labor and parts, depending on your location and the mower model.
Is It Hard To Replace A Recoil Starter Spring?
Replacing the recoil spring is more challenging than just replacing the cord. The spring is under high tension and can be difficult to handle. If you are not confident, it is a part where calling a professional is often recommended to avoid injury or frustration. Many people choose to replace the entire starter assembly as a unit instead.
Fixing a broken rip cord on your lawn mower is a straightforward repair that restores your equipment’s functionality. By following these clear steps, you can complete the job in under an hour. Remember to always prioritize safety by disconnecting the spark plug. With your mower fixed, you’ll be ready to tackle your lawn care tasks without delay. Regular checks and proper pulling technique will help ensure your cord lasts for many seasons to come.