Push, or walk-behind, mowers commonly feature a pulling mechanism that is designed to turn the crank shaft and start the lawn mower engine. Also known as a recoil start, the pulling mechanism consists of a few different parts that work together to allow a user to start the mower engine.
The operator pulls the rope’s handle or grip. This causes the rope to unwind around the crankshaft and spin it. The spinning motion of the crankshaft cranks the engine. The crankshaft’s motion engages the flywheel, enabling the engine to start.
Subsequently, question is, why is the pull cord stuck on the lawn mower? The crankshaft is connected to the blade shaft on your recoil start walk behind lawn mower, so if the pull cord is stuck, it could be because something is blocking the movement of the blade. Disconnect the spark plug for safety, then take a look under the deck.
Correspondingly, how do you fix a pull start on a lawn mower?
Remove the old starter rope Remove the screws that hold the rewind to the engine and lift it off. Use a nut driver to remove hex head screws. You tug one last time to get the lawn mower started, and suddenly the rope breaks and the end goes spinning into the hole. Don’t blow a gasket.
Can you start a lawn mower without a pull cord?
This work is pretty easy to do, but you might also have a bent crankshaft, which will need to be fixed by an experienced small-engine repair guy. Or you might consider buying a new mower without a cord. You can take your pick of electric or battery-powered models, as well as gas mowers with electric starting.
How do you fix a recoil pull starter?
A small tab on the pulley can cut your hand if you accidentally let go of the recoil starter when it is tensioned. Remove the recoil housing cap. Unscrew the cap that holds the pulley to the recoil starter housing. Untie the rope. Re-tension the spring. Attach the cap. Reinstall the rope. Coil the cord.
How do you assemble a pull start?
Re-assemble a Pull-Starter Re-coil the spring. You need to hook the end of the coil into a notch on the back of the pulley. Wrap the starter rope on the pulley. Wrap it counter clockwise until there is a full turn of rope remaining. Place the pulley in the cover. Remove the slack from the rope.
What is recoil start?
Recoil start (also called manual start, pull start or rewind start) is a method of starting an internal combustion engine, usually on small machines, such as lawn mowers, chainsaws, ultralight aircraft, small outboard motors and portable engine-generators.
How do you fix a pull cord spring on a lawn mower?
Without a properly working starter spring, your lawn mower has no chance of starting. Remove the screws from the top of the engine cover. Unscrew the screws from the recoil assembly. Remove the pulley and the broken starter spring beneath it. Wind the pulley counterclockwise to put tension on the starter spring.
Why do lawnmowers smoke?
A lawn mower engine will puff out black smoke when the fuel and air mixture is too rich. Because there isn’t enough air, combustion is incomplete, and the unburnt fuel in the combustion chamber turns to smoke. You see the same phenomenon when you burn leaves and pack them too tightly to allow air to circulate.