![]() If it is, you’ll need to replace it before the mower will start.įortunately, replacing a broken control cable is an easy job. If your lawn mower’s engine won’t start, check to see if that cable is damaged or broken. The safety bar of a dead man’s control is attached to a metal cable that connects to the engine’s ignition coil, which is responsible for sending current to the spark plug. While this mechanism cuts down on the likelihood of horrific lawn mower accidents, it also can be the reason the mower won’t start. When the bar is released, the engine stops. This colorfully named safety bar must be held in place by the operator for the engine to start or run. Your lawn mower’s reluctance to start may have nothing to do with the engine at all but rather with one of the mower’s safety features: the dead man’s control. Inspect the safety release mechanism cable. If the problem persists, consider changing the spark plug.ħ. Reinstall the spark plug, first by hand, and then with a socket wrench for a final tightening. ![]() If you see buildup, spray brake cleaner onto the plug, and let it soak for several minutes before wiping it with a clean cloth. ![]() Use a socket wrench to unscrew the spark plug and remove it.Ĭheck the electrode and insulator. Locate the spark plug, often found on the front of the mower, and disconnect the spark plug wire, revealing the plug beneath. If it’s loosened, disconnected, or coated in water or carbon residue, the spark plug may be the cause of your machine’s malfunction. Is your lawn mower still being stubborn? The culprit may be the spark plug, which is responsible for creating the spark that ignites the fuel in the engine. Allow it to dry completely, and then wipe fresh motor oil over the filter, replace it in its housing, and power up the mower-this time to the pleasant whirring of an engine in tip-top condition. If you’re cleaning a foam filter, wash it in a solution of hot water and detergent to loosen grime. The only choice for paper filters is replacement. For a riding mower, turn off the engine and engage the parking brake for a walk-behind mower, pull the spark plug wire from the plug.
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