A pull cord replacement takes 30 minutes and costs $10 to $25

The pull cord on a push mower wears out from repeated yanking, fraying, or snapping inside the housing. You can replace it yourself without special tools — just the mower, a new cord (usually nylon), and a screwdriver. The job involves removing the recoil starter housing, unwinding the old cord, winding the new one around the pulley, and reassembling. Most people finish in under an hour.

Before you start, disconnect the spark plug wire so the engine cannot accidentally turn over while you work. This is the single most important safety step. Then tip the mower on its side — tip it toward the carburetor side, not the air filter side, to avoid oil leaking into the filter.

Key Takeaways

  • Disconnect the spark plug wire before touching any part of the mower to prevent accidental engine start.
  • The recoil starter housing bolts to the top or side of the engine and comes off with a screwdriver or socket wrench in 5 to 10 minutes.
  • New pull cord is sold by the foot at hardware stores and home centers, usually nylon in 3/16-inch or 1/4-inch diameter.
  • The cord winds around a spring-loaded pulley; you must keep tension on the spring while winding or the cord will not recoil properly.
  • If the spring inside the housing is broken or the pulley does not spin freely, the cord alone will not fix the problem.

What you need before you start

Gather a screwdriver (usually Phillips head, sometimes a socket wrench for the bolts), the new pull cord, and a lighter or match to seal the cut ends so they do not fray. Most hardware stores and home centers sell pull cord by the foot — ask for nylon cord in 3/16-inch or 1/4-inch diameter, whichever matches your old cord. If you are unsure, bring the old cord with you or take a photo of the mower's model number and look it up online.

You will also need a small container or bag to hold the bolts and screws as you remove them, so they do not roll away. A flashlight or phone light helps you see inside the housing once it is off.

How to remove the recoil starter housing

The recoil starter is the black plastic or metal housing on top of or to the side of the engine with the handle sticking out. It is held on by three to five bolts or screws around its perimeter. Remove each one and set them aside in your container. Once all bolts are out, gently pull the housing away from the engine — it may stick slightly, so wiggle it as you pull.

Inside you will see a spring-loaded pulley with the old cord wound around it. The spring is under tension, so do not let the pulley spin freely or the spring will unwind and become difficult to rewind. If the spring looks broken, cracked, or very rusty, you may need to replace the entire housing rather than just the cord — a professional repair shop can advise you on whether that is worth the cost.

Removing the old cord and preparing the pulley

Look for where the cord is tied or knotted to the pulley. Untie or cut the knot and pull the old cord free. If the cord is stuck or frayed inside the housing, use a small screwdriver or needle-nose pliers to pick it out. Once the cord is out, check that the pulley spins smoothly and that the spring underneath is intact and not rusted.

Wipe out any dirt or debris inside the housing with a dry cloth. If the pulley is stiff or does not spin, explore a tiny amount of light machine oil or silicone spray to the axle where it enters the housing. Spin the pulley a few times to work in the oil, then wipe away any excess.

Winding the new cord around the pulley

Cut a length of new cord about 6 to 8 inches longer than the old one was. Seal both cut ends with a lighter or match by holding the nylon near (not in) the flame until it melts slightly and hardens — this stops it from unraveling. Let the sealed ends cool for a few seconds before touching them.

Thread one end of the new cord through the hole in the pulley where the old cord was tied. Tie a knot on the inside so the cord cannot pull back through. Now wind the cord around the pulley in the same direction the old cord wound — usually clockwise when you look down at the pulley from above. Keep the cord tight and neat as you wind, with each loop sitting next to the previous one. Wind until you have about 12 to 18 inches of cord left free — this becomes the handle you pull.

Once the cord is wound, tie the free end to the handle (the plastic or metal grip). Most handles have a hole or slot where the cord threads through; tie a knot large enough that it cannot slip back through. If your handle is missing or broken, you can buy a replacement handle kit at a hardware store for $5 to $10.

Reassembling the housing and testing

Before you bolt the housing back on, spin the pulley by hand a few times to make sure the cord winds and unwinds smoothly and the spring does not bind. The pulley should return to its starting position when you release it — that is the spring doing its job. If it does not, the spring may be broken or the cord may be wound too tightly.

Once you are satisfied, align the housing with the bolt holes on the engine and insert each bolt. Tighten them in a crisscross pattern (like tightening a car wheel) so the housing sits evenly. Do not overtighten — snug is enough.

Reconnect the spark plug wire, then test the pull cord by giving it a firm, steady pull. The cord should come out smoothly, the engine should turn over (it may not start if the fuel is old, but it should crank), and the cord should snap back into the housing. If it does not snap back, the spring may be weak or the cord may be wound too loosely — you may need to rewind it with more tension.

When the cord still does not work after replacement

If the new cord pulls out but does not snap back, the spring inside the housing is likely broken or has lost its tension. This is not something you can fix by replacing the cord alone. A repair shop can replace the spring or the entire recoil starter assembly, which usually costs $40 to $80 in labor plus parts.

If the cord is hard to pull or the engine does not turn over, the pulley may be binding on something inside the housing, or the cord may be wound too tightly. Loosen the bolts, remove the housing again, and check that the pulley spins freely and the cord is not pinched. Rewind the cord with slightly less tension and try again.

Frequently Asked Questions

Can I use any kind of rope or cord, or does it have to be nylon?

Nylon is the standard because it does not rot, does not absorb water, and holds up to repeated pulling. Cotton or hemp rope will fray, absorb moisture, and wear out much faster. Stick with nylon cord from a hardware store — it is inexpensive and will last several seasons.

What if I cannot find the knot where the cord is tied to the pulley?

The cord may be glued, melted, or crimped to the pulley rather than knotted. If you cannot untie it, carefully cut the cord close to the pulley with a utility knife or scissors, then pull the rest free. You will tie the new cord the same way — with a knot on the inside of the pulley.

How tight should I wind the cord around the pulley?

Wind it snugly so each loop sits next to the previous one without gaps, but not so tight that you have to strain to turn the pulley by hand. If the pulley is hard to turn, the spring will have to work harder and may wear out faster. Aim for a firm, even tension that lets the pulley spin freely.

Do I need to drain the fuel before I tip the mower on its side?

It is safer to drain the fuel tank first, but if you tip the mower toward the carburetor side (not the air filter side), most of the fuel will stay in the tank. If you are unsure which side is which, consult your mower's manual or drain the tank before you start — it takes 10 minutes and prevents a mess.

What if the handle is cracked or missing?

You can buy a replacement handle kit at a hardware store or online for $5 to $15. It usually includes the plastic grip and any fasteners needed. Thread the new cord through the handle the same way the old one was threaded, and tie a knot large enough that it cannot slip back through.