Why won’t the cord on my mower pull?

When a push lawnmower’s pull string, or starter rope, locks up, it could mean the engine has a problem, but that usually isn’t the case when oil is added to the engine regularly. … The problem also could be with the recoil starter. Unless the engine has seized, you should be mowing after a few minutes.

What causes a pull cord to lock up?

One way the starter cord can get stuck is due to hydraulic lock, which is caused by oil getting trapped in the combustion chamber. You’ll need to release the compression and the oil, so remove the spark plug and then give the cord a tug.

Why does a lawn mower lock up?

If it’s full of oil, the piston cylinder may be full of oil, causing hydro-lock. This can happen when you tilt the mower forward and hold it that way for a few minutes. … But when the cylinder is full of oil, the piston has to work against the oil and can lock.

How do you unlock the pull cord on a lawnmower?

Put on leather work gloves, and gently push the mower blade until it turns, or push the blade from a safe distance by using a stick. After you can spin the blade freely, you should be able to pull the starter rope to start the engine.

IT IS IMPORTANT:  Frequent question: In what time period did best and Holt introduce their first steam traction engine tractors?

How do I know if my lawnmower is locked up?

Following are the signs that your lawn mower engine is seized.

  1. Engine sounds rough.
  2. Engine does not start.
  3. Blades do not move and are stuck.
  4. The cylinder and piston are fixed.
  5. Low oil level.
  6. Deteriorated fuel quality.

How do you know if your lawnmower is blown?

Here are a few signs that your lawn mower’s engine or head gasket is blown:

  1. There’s an oil leak.
  2. There’s smoke coming from the exhaust.
  3. The mower has low power and pressure.
  4. Your mower fails a compression test, or there’s diminished compression.