Quick Answer: When Should I Use Choke On My Lawn Mower?

Is it bad to run an engine with the choke on?

Leaving the choke on while operating will result in excessive fuel consumption, irregular engine power performance and eventually may even damage the engine.

Some engines utilize a manual fuel primer bulb to enrich the ratio of fuel in the fuel air mixture for initial engine starting..

How long should I leave the choke on?

30 secondsThe choke usually “chokes” the air supply into the engine so it gets more petrol than usual. Hence it’s name. You should start the bike from cold with half or full choke depending on how cold it is. After 30 seconds is usually enough for most bikes.

Why does my lawn mower only run for a few seconds then dies?

A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. … This sticky fuel can clog up the carburetor and cause the engine to stall. If the carburetor is clogged, try cleaning it with carburetor cleaner.

Do you have to run lawnmower with choke on?

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. … The carburetor brings air and fuel together and mixes them in the perfect ratio for combustion before they enter the engine.

Which position is choke on?

A rich mixture is needed to start your bike when it is cold… colder than a cup of coffee. Typically the “choke” is on when the choke lever is in the up position or when the choke lever is inline with the handle bars on your bike. Choke on means that the choke plate is covering the carb throat.

Should Choke be open or closed when starting?

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. This increases the amount of fuel in the cylinder and helps to keep the engine running, while it is trying to warm up.

What happens if choke is left on?

What happens if you leave the choke on too long? 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.

What is the choke position on a lawn mower?

Put the throttle lever in a mid-to-high position. If you skip this step, the engine won’t be able to keep going once you’ve started it. If the mower is cold, set the choke. The choke helps provide a richer fuel-air mixture to the engine, which helps it stay running until it warms up.

Why does engine only run with 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.

Why do I have to choke a warm engine?

The choke ‘chokes’ air going into the engine through the carburetor, effectively increasing the amount of fuel in the cylinder. In cold weather, this increases the chances of ignition. … In warm weather, a richer mix (more fuel in mix) is simply wastage of fuel as unburnt fuel is simply expelled.

When should you choke your engine?

The choke allows for a richer fuel mixture to be sent to the engine, increasing the rpm’s on a cold engine. Without a choke, cold starts could cause very low idles on some cars, resulting in rough vibrations.