What does it mean to choke a lawn mower?

What Is A Choke? The Function of a choke or priming bulb is to enrich the fuel mixture, so a cold engine starts smoothly. Gas engines run best when the ratio of air to fuel is 14.7 to 1. Using the choke or priming bulb enriches the fuel mixture which counteracts the lean condition caused by the dense cold air.

How do you choke a lawn mower?

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.

What does the choke do on power tools?

All gas-powered handheld tools have a choke that lets you adjust how rich or lean the mixture of gasoline and air that goes to the engine, and for a cold start it needs to be in a closed position.

Why does lawn mower only run with choke on?

If your lawn mower only runs with the choke on, check the carburetor. The carburetor brings air and fuel together and mixes them in the perfect ratio for combustion before they enter the engine. There are several passages in the carburetor that allow fuel to enter the air stream depending how the throttle is set.

What happens if you leave choke on lawn mower?

The most common issue that shows up with the choke system is flooding. 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.

Do lawn mowers have a choke?

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.

Is it bad to leave gas in lawnmower over winter?

Unused gas left in a mower over the winter can get stale, gumming up the carburetor and inviting rust. Turn the mower off and allow the engine to cool, then siphon excess gas into a clean can. (You can put this gas in your car, provided it hasn’t been mixed with oil.)

What is choke position?

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 lawn mower?

Normally, the choke is closed when starting cold and gradually opened in the few seconds after the engine starts. It is left fully open once the engine is running and may not need to be closed when starting warm. A typical starting procedure for an engine with a choke might be: Close the choke (usually on carburetor).

Why won’t my mower run without the choke on?

A mower failing to run without having the choke fully engaged is often the result of a faulty carburetor that either needs to be replaced or cleaned.

Is there a choke on a lawn mower engine?

It doesn’t matter whether the engine is on a weed whacker, snow blower, chainsaw or lawn mower, or whether the engine is a two-cycle or four-cycle engine. They all have a choke on the carburetor. The choke is a valve on the engine’s air intake that reduces the volume of air flowing into the engine on a cold start.

What does a choke do on a car engine?

What Choke Does. The choke is a valve on the engine’s air intake that reduces the volume of air flowing into the engine on a cold start.

How many strokes does it take to start an auto choke?

With a choke system, auto or not, it takes a few stroke cycles to get that fuel in the combustion chamber in high enough amounts, this may require more than one pull or several depending on the engines attitude.

Are automatic chokes a thing of the past?

It’s about time that Honda started using that new “technology.” Automatic chokes were abandoned for the better Electronic Fuel injection (EFI) by the auto manufacturers in the late 80’s. Actually automatic chokes are almost a thing of the past.