A lawn mower choke reduces the airflow of the engine, allowing for more fuel to be used This process allows the engine to spark and ignite easier, starting up in an instant Choke valves should only be used when absolutely necessary, as they can damage the engine if they’re overused
What is the choke position on a lawn mower?
Choke plate – a control on the carburetor which partially closes off the air intake and forces additional suction to increase the amount of fuel drawn into the cylinder Normally, the choke is closed when starting cold and gradually opened in the few seconds after the engine starts
How do I start my lawn mower with a choke?
Open the choke all the way if you notice that it has been closed If it has been open, the carburetor may be flooded Close the choke, and pull the starting cord a few times When you get the engine to sputter, open the choke, and try starting the mower
Is it bad to run a lawn mower with the choke on?
When closed, the choke plate restricts most of the incoming air from entering the carburetor’s venturi This creates additional low pressure in the venturi and also forces air to If your lawnmower will start and run with the choke on but dies when the choke is turned off, it may have a problem with the carburetor
What happens if you leave choke on lawn mower?
If the engine is successfully started, leaving it at full choke for only a few seconds can cause too much fuel to enter into the combustion chamber This will then cause the the engine to lock up and stall A stuck choke can also prevent you from closing it fully to allow the engine to start properly
Should the choke be up or down?
We would say that the “choke” is on or closed This restriction of air flow reduces the amount of air available for combustion which means that the air fuel mixture is very rich The “choke” is off when the choke lever is down or when the choke lever is facing you if your choke is a handle bar mount
How does a choke work on a mower?
By restricting the flow of air into the throat of the carburetor, the choke valve reduces the pressure inside the throat, which causes a proportionally greater amount of fuel to be pushed from the main jet into the combustion chamber during cold-running operation
Is there a choke on a push mower?
The will usually be a lever on the handle of the lawnmower or on the body of the engine The choke helps provide a richer fuel-air mixture to the engine, which helps it stay running until it warms up Once the mower has been running for a few minutes turn off the choke
Why does my small engine only run with the choke on?
If a motorcycle or ATV only runs with the choke on, it’s because the richer “choke on” mixture is actually closer to the engine’s normal operating fuel mixture than the leaner “choke off” mixture So when the choke is turned off, the engine gets too little fuel and too much air for it to run and it stalls
What will leaving the choke on do?
Leaving the choke on for too long will cause unnecessary engine wear and waste fuel This is also bad for the environment One a cold day, the engine can need more fuel than usual to get running – this makes the mixture ‘rich’, and this is what the choke does
Why does my small engine only run on half choke?
If your engine only runs when it’s half choked, there’s a problem When a two-stroke only runs on half choke it is usually the result of a dirty fuel cap, a leaking gasket, a clogged carburetor, or a gunky passageway You can fix these problems by cleaning the carburetor, removing the fuel, and adding new gas
When should I use choke on my lawn mower?
A lawn mower choke reduces the airflow of the engine, allowing for more fuel to be used This process allows the engine to spark and ignite easier, starting up in an instant Choke valves should only be used when absolutely necessary, as they can damage the engine if they’re overused
How do you know if your lawnmower is flooded?
You pull the machine out onto the lawn and give the starting cord several tugs When nothing happens, you turn on the choke and continue pulling until you detect the familiar smell of gasoline, which means the engine is flooded
How do you tell if the choke is open or closed?
When the choke butterfly is allowing the most air flow, without restriction, it is open Like a door Open lets things through when the choke is restricting the flow of air, it is closed
What position should the choke be in?
The choke is located before the throttle, and manages the total amount of air going into the engine The choke is only used when starting a cold engine When doing a cold start, the choke should be closed to limit the amount of air going in
How long do you leave choke on?
After 30 seconds is usually enough for most bikes Especially a small thumper Just reduce the choke slowly If it wont idle smoothly (sounds like an asthmatic pensioner) then it probably wants the choke on a bit longer
Do you need a choke on a carburetor?
When an engine is cold, it requires a richer Air/Fuel Mixture to get started As the engine warms up, it is able to run on a leaner mixture The choke plate must be opened gradually to allow more air into the engine Carburetors are available with or without a choke
What does a choke cable do?
A choke valve/cable is designed to restrict the flow of air in the carburettor of an engine This helps enrich the fuel-air mixture, improving the ability to start an engine in low temperature conditions Each model and make of a motorcycle will utilise choke valves and cables slightly differently