Replace the pull cord yourself in 20 to 30 minutes with basic tools

A broken pull cord stops your mower from starting, but you do not need a repair shop to fix it. Most lawn mowers use the same cord-and-spring system, and replacement takes only a screwdriver, pliers, and a new cord kit — usually under $15. The job involves removing the recoil housing, unwinding the old cord, installing the new one, and reassembling. If your mower is a push model with a horizontal engine, you can do this yourself. If it is a riding mower, the process is similar but the housing sits in a different location.

The hardest part is not the replacement itself but managing the recoil spring, which is under tension and can snap back suddenly. Work slowly, keep your hands clear of the spring, and do not force anything. If the spring breaks during removal, you will need to order a replacement spring assembly, which costs more and takes longer.

Key Takeaways

  • A pull cord replacement kit costs $10 to $20 and includes the cord, handle, and sometimes a new spring.
  • You will need a screwdriver, pliers, and a work surface where you can set the recoil housing without losing small parts.
  • The recoil spring is under tension — release it slowly and keep your hands away from the housing edges.
  • Most pull cords are 40 to 50 inches long; measure your old cord or check your mower manual to order the right length.
  • If the spring is broken or the housing is cracked, replacement costs more and may be worth taking to a shop instead.

What you need before you start

Gather a screwdriver (usually Phillips head, sometimes flathead), pliers, and a replacement cord kit. The kit should match your mower brand and engine size — check your mower manual or the model number on the engine housing. Kits are sold at hardware stores, online retailers, and mower dealers. Some kits include the handle and spring; others are cord only. If your cord is frayed but the handle is intact, you can buy cord alone and reuse the handle.

Measure the old cord if you still have it, or check your manual for the correct length. Most push mower cords are 40 to 50 inches. A cord that is too short will not reach the handle; one that is too long will bunch inside the housing and jam. Write down your mower brand and engine model before you order, because different engines use different housing sizes.

Remove the recoil housing from the mower

Locate the recoil housing on top of the engine — it is the plastic or metal cover with the pull handle attached. On push mowers, it sits directly above the crankshaft. On riding mowers, it is usually on the side of the engine. Unscrew the bolts or screws holding the housing to the engine block. Most housings have two to four fasteners. Set the screws in a small container so you do not lose them.

Lift the housing straight up and away from the engine. Do not tilt it or twist it, because the recoil spring inside is still under tension. Place the housing on a clean, flat work surface with the spring side facing up. You should see the spring coiled inside the housing and the old cord wound around a pulley in the center.

Release the spring tension safely

The recoil spring is compressed and will try to unwind when you remove the cord. To prevent it from snapping back and pinching your fingers, you need to release the tension slowly. Locate the spring anchor — a small hook or slot where the spring's inner end is attached to the housing. Using pliers, gently pull the spring's inner end out of the anchor just enough to loosen it slightly. Do not pull hard or all at once.

Once the spring is loose, the pulley in the center should turn freely. Rotate the pulley slowly by hand to unwind any remaining tension. If the pulley does not turn, stop and check that the spring is fully released. Never force the pulley, because a stuck spring can break. Once the pulley spins freely with no resistance, the spring is safe to work with.

Remove the old cord and wind the new one

Untie or cut the old cord from the handle and pull it out of the housing. You may need to unscrew the handle from the cord if it is knotted. Once the old cord is out, check the pulley for damage — if it is cracked or the groove is worn smooth, the new cord will slip and you will need a new pulley assembly.

Thread the new cord through the hole in the pulley, leaving about 6 inches of cord on the inside of the housing. Tie a knot on the inside end so it cannot pull back through the hole. Wind the cord around the pulley in the same direction the old cord was wound — usually clockwise when viewed from above. Wind it tightly and evenly, with each loop sitting next to the one before it. Leave about 2 to 3 inches of cord unwound on the pulley so you have room to tie the handle.

Tie the handle to the outer end of the cord using a knot that will not slip — a double overhand knot or a figure-eight knot works well. Pull the handle to test the knot; it should not move. Trim any excess cord beyond the handle.

Reattach the spring and reassemble the housing

Before you close the housing, the spring must be re-engaged. Rotate the pulley by hand until the spring's inner end lines up with the anchor hook again. Using pliers, guide the spring's end back into the anchor. Do this slowly and carefully — if the spring slips, it will snap back and can pinch your hand. Once the spring is anchored, the pulley should still turn freely.

Pull the cord handle all the way out to its full length. This winds the cord around the pulley and pre-tensions the spring. The handle should snap back into the housing on its own when you release it. If it does not snap back, the spring is not properly engaged — stop and re-anchor it.

Place the housing back on the engine, aligning the bolt holes. Screw the fasteners back in by hand first, then tighten them with a screwdriver. Do not over-tighten, because you can crack the plastic housing. The housing should sit flush against the engine with no gaps.

Test the pull cord before you use the mower

Pull the cord handle several times to make sure it moves smoothly and snaps back every time. The cord should not stick, jam, or feel loose. If it jams, stop when ready and check that the cord is wound evenly on the pulley and that the spring is properly anchored. If the handle does not snap back, the spring may be too loose or not engaged.

Once the cord pulls smoothly, try starting the mower. The engine should turn over normally. If the cord is too tight and the engine will not turn, the spring may be over-tensioned — you may need to loosen the spring slightly by rotating the pulley a quarter turn counterclockwise. If the cord is too loose and the engine does not turn, the spring needs more tension.

When to take the mower to a shop instead

If the recoil spring is broken, cracked, or will not stay in the anchor, a replacement spring assembly costs $30 to $60 and requires more disassembly than a cord replacement. If the recoil housing is cracked or the pulley is damaged, replacement may cost $50 to $100. In these cases, a repair shop can often do the work faster than you can order parts and learn the process.

If you are uncomfortable working with the spring tension or if the mower is still under warranty, a shop repair is the safer choice. Most shops charge $40 to $80 for a pull cord replacement, which is reasonable if you value your time and want a warranty on the work.

Frequently Asked Questions

Can I replace the pull cord without removing the housing?

No. The cord is wound around a pulley inside the housing, and you cannot access it without removing the housing from the engine. Trying to pull the cord out without opening the housing will break it or jam it further.

What if the spring breaks while I am working on it?

Stop when ready and do not try to reassemble the housing. A broken spring cannot be rewound or repaired. Order a replacement spring assembly for your mower model and install it following the same steps, or take the mower to a repair shop. A new spring assembly usually costs $30 to $60.

How do I know if my cord is wound the right direction?

Look at the old cord before you remove it — note which way it wraps around the pulley. Wind the new cord the same way. If you forget, wind it clockwise when looking down at the pulley from above; this is the standard direction for most push mowers. If the cord jams when you test it, unwind it and try the opposite direction.

Why does my new cord keep getting loose?

The knot at the handle may be slipping, or the cord may not be wound tightly enough on the pulley. Retie the handle knot using a figure-eight or double overhand knot and pull it tight. If the cord still loosens, unwind it, rewind it more tightly with each loop touching the next, and retie the handle.

Do I need to replace the handle too?

Only if it is cracked, broken, or uncomfortable to grip. Most replacement kits include a new handle, but you can reuse an old one if it is in good condition. straightforward untie the old cord from the handle and tie the new cord to it using the same knot.