When the choke is on, the carburetor gets blocked by a plate-like obstacle.Īt this point, you can say that the system is “choked” and when the lever is pulled down (or backward) to a vertical line, the choke goes off. When the lever is pushed up or forward to a diagonal or horizontal line, the choke comes on. In most cases, the choke is a small lever or switch on one side of the lawn equipment. Here RustySkull Productions shows the ‘Choke’ or ‘Choke On’ position symbol here also labeled ‘Start’. How Do You Know If The Choke Is On Or Off? Now that we have an idea of how the choke functions, it is ideal to know how to identify the “on” and “off” position of the choke on your lawn equipment. This concentrated fuel environment helps with starting and warming up the engine. I will get into this in more depth later on, but essentially turning on the choke keeps more of the fuel fumes in the engine and restricts most of the airflow that would dilute the fuel vapors. This means that the status of the choke on your lawn equipment can determine how well it functions when in use. In clearer terms, when the choke is on, the airflow is restricted and when it is off, air can enter freely. Understanding the simple operation of a choke can help to know what the position of the choke lever does.įirst of all, why is it even called a choke? The choke function on your lawn equipment (or any other electrical equipment) is used to control the air that enters the cylinders and mixes with the fuel. It can be confusing for those not very familiar with mower or trimmer engines to know what the use of a choke is for and what the positions mean.
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