The will usually be a lever on the handle of the lawnmower or on the body of the engine. Put the throttle lever in a mid-to-high position. 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.Click to see full answer. In this regard, is it bad to run mower with choke on?If you have a choke lever separate from the throttle and the engine only stays running when choked, then your carburetor has a fuel blockage causing it to be too lean(not enough fuel). The only way to balance the fuel air mixture is to restrict the air by choking it. That’s why it runs better on choke.Similarly, why is it called a choke? The name comes from blocking—”choking”—high frequencies while passing low frequencies. It is a functional name; the name “choke” is used if an inductor is used for blocking or decoupling higher frequencies, but the component is simply called an “inductor” if used in electronic filters or tuned circuits. Herein, should Choke be open or closed? 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).What happens if the choke is left on?3 Answers. It will not damage the engine at all. All that will happen is that it will run richer, thus using more fuel. If you did it for thousands of miles you’d probably end up with more deposits in the engine/exhaust, but even that is easy to sort.

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