How does a mower pull starter work?
In the center of the pulley, a recoil spring connects to the pulley through a hook. When the starter rope gets pulled off the pulley and out of the engine, the recoil spring stretches out. … This allows the operator to continuously pull the rope to get the engine moving faster and faster toward combustion.
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.
How do you prime a lawn mower?
How to Prime a Lawnmower Carburetor
- Remove the cap from the lawnmower fuel tank. Fill the tank with gasoline and replace the cap.
- Locate the primer bulb on the side of the lawnmower engine. …
- Press and release the primer bulb three times with your finger to prime the lawnmower carburetor.