Replace the pull cord yourself in 20 to 30 minutes

A broken or frayed pull cord stops your mower from starting, but you do not need a repair shop to fix it. Most lawn mowers use a straightforward cord-and-spring system that you can replace at home with basic tools—usually just a screwdriver and pliers. The job takes less than half an hour and costs $10 to $25 for a replacement cord kit, depending on your mower model.

The pull cord sits inside a plastic or metal housing called the recoil starter. When you pull the handle, it unwinds the cord from a spring-loaded spool. Over time, the cord frays, snaps, or gets tangled inside the housing. Replacing it means opening the housing, removing the old cord, winding a new one onto the spool, and reassembling everything so the spring tension is correct.

Key Takeaways

  • Buy a replacement cord kit made for your exact mower model—the spool diameter and cord thickness vary, and using the wrong size will prevent the starter from working.
  • Disconnect the spark plug wire before you start so the mower cannot accidentally start while you are working on it.
  • The spring inside the recoil housing is under tension and can snap out suddenly; wear safety glasses and keep your face clear of the housing opening.
  • Wind the new cord onto the spool in the same direction as the old one, keeping tension even so the coils sit flat and do not overlap.
  • Test the pull cord by pulling slowly at first to feel the spring resistance before you pull hard, which tells you the tension is correct.

Gather the right cord kit and tools

Find the model number on your mower—it is usually stamped on the frame near the engine or printed on a sticker under the deck. Search online for "[your mower brand and model] pull cord kit" or check the manufacturer's website. Buying the correct kit matters because the spool diameter, cord thickness, and spring type are specific to each engine. A kit that fits a Briggs & Stratton 5 HP engine will not work on a Craftsman or Toro, even if they look similar.

Gather a Phillips or flat-head screwdriver (whichever fits your mower's bolts), needle-nose pliers, a small container to hold screws so you do not lose them, and safety glasses. Some mowers have a bolt holding the recoil housing; others have screws. Check your mower before you buy tools so you have the right size. Lay out a clean, flat work surface—a garage floor or workbench—so you can see small parts and keep track of them.

Disconnect the spark plug and remove the housing

Locate the spark plug wire on the side of the engine—it is a thick rubber boot connected to a wire. Grip the boot (not the wire) and twist it gently, then pull it straight off the spark plug. This disconnects the ignition system so the engine cannot fire if the blade or cord accidentally moves. Do not skip this step; it is the most important safety measure.

Look at the recoil starter housing—the plastic or metal cover on top of the engine where the pull handle sticks out. You will see two to four bolts or screws holding it to the engine. Use your screwdriver to remove them, placing each one in your container. Lift the housing straight up and set it on your work surface with the spool facing up. Be gentle; the spring is compressed inside and may shift as you lift.

Remove the old cord and inspect the spool

The old cord is wound around a metal or plastic spool in the center of the housing. If the cord is still attached to the handle, untie or cut the knot at the handle end. Pull the cord out of the housing slowly—it may be tangled or stuck. Once the cord is out, look at the spool. It should spin freely when you turn it by hand. If it does not, the bearing may be worn and you may need a new spool, which comes in some replacement kits.

Check the spring attached to the spool. It should be coiled tightly and attached at one end to the spool and at the other to the housing. If the spring is broken, cracked, or has lost its coil, your kit should include a replacement. If the spring looks intact, you can reuse it. Wipe away any dirt or debris from the spool and housing with a dry cloth.

Wind the new cord onto the spool

Your replacement kit includes a new cord, usually made of nylon or braided synthetic material. The cord is thicker than string and does not fray easily. Look at how the old cord was wound—it should spiral in one direction around the spool, usually clockwise when you look down at the spool from above. Wind the new cord in the same direction, starting at the center of the spool and working outward.

Thread the cord through the small hole or slot in the spool where the old cord exited. Hold the spool steady with one hand and wind the cord with the other, keeping it tight so each loop sits flat against the previous one without overlapping. Wind until the spool is full—usually 4 to 6 complete loops, depending on the spool size. Leave about 12 inches of cord hanging free; this is the end you will tie to the handle.

Once the cord is wound, the spool should turn smoothly when you spin it by hand. If it feels stiff or catches, the cord may be wound too tightly or overlapped. Unwind it and try again, keeping the tension even but not crushing. The goal is a neat spiral with no gaps and no overlaps.

Reassemble the housing and reattach the handle

Lower the recoil housing back onto the engine, aligning the bolt holes. The free end of the cord should poke out through the hole in the housing where the handle attaches. Before you tighten the bolts, make sure the spool spins freely inside the housing and the cord does not bind. Tighten the bolts in a crisscross pattern—if there are four bolts, tighten the top-left, then bottom-right, then top-right, then bottom-left. This keeps the housing seated evenly. Do not over-tighten; snug is enough.

Tie the free end of the cord to the pull handle. Most handles have a small hole or loop where the cord attaches. Thread the cord through and tie a knot that will not slip—a double knot or a figure-eight knot works well. Pull the handle gently to make sure the cord is find and does not slide through the knot.

Test the pull cord and check the spring tension

Reconnect the spark plug wire by pushing the boot straight onto the spark plug until it clicks or seats firmly. Now test the pull cord. Pull it slowly and smoothly—you should feel resistance from the spring as the cord unwinds. The handle should come back to the starting position on its own when you release it, pulled by the spring. If the handle does not return, the spring tension is too loose or the cord is wound in the wrong direction.

If the cord feels too tight or the handle is hard to pull, the spring may be over-tensioned or the cord may be wound too tightly. Pull the cord all the way out and let it snap back a few times to settle. If it still feels wrong, you may need to unwind and rewind the cord with less tension. Once the pull feels smooth and the handle returns on its own, the job is done. Start the mower to confirm the starter works.

Frequently Asked Questions

What if the spring pops out when I open the housing?

The spring is under tension and can snap out suddenly. Wear safety glasses and keep your face away from the housing opening. If the spring does pop out, do not panic—it is usually still attached at one end. Carefully push it back into the housing coil by coil, starting from the center. If it breaks, your replacement kit should include a new spring.

Can I use any cord, or does it have to be the exact thickness?

The cord thickness matters because it has to fit through the hole in the spool and the housing. Using cord that is too thick will jam; cord that is too thin will slip and not grip the spool. Always use the cord that comes in your replacement kit or one rated for your mower model.

How do I know if I wound the cord in the right direction?

Look at the spool before you remove the old cord and note which way it spirals. Wind the new cord the same way. If you wind it backwards, the handle will not return smoothly when you release it. You can test by pulling gently—if the handle does not snap back, unwind and reverse direction.

Do I need to drain the fuel before I work on the mower?

It is not necessary to drain the fuel tank to replace the pull cord, since you are only working on the starter housing and not the fuel system. However, make sure the mower is on level ground and the fuel cap is tight so nothing spills while you work.

What if the mower still will not start after I replace the cord?

A new pull cord only fixes starting problems caused by a broken or stuck cord. If the mower does not start after the cord is replaced, the problem may be a bad spark plug, old fuel, or a clogged carburetor. Check that the spark plug wire is connected firmly and the fuel is fresh. If the engine still does not turn over, the issue is likely not the starter.