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Crankshaft Parts




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More Information about Crankshaft

Lawn mower blades can move at a speed of 200+ mph while rotating at 51+ revolutions per second. When a blade moving at that speed comes in contact with an immovable object, such as a rock, stump, sprinkler, or curb, the impact forces it to stop suddenly. The energy is dispersed through the blades and up to the crankshaft. This puts pressure on the area between the bottom of the engine and the lower end of the crankshaft, forcing it to bend.

Crankshafts are usually designed to be able to withstand the impact without breaking or bending, however, depending on the blade speed and force of the impact, damage will occur. It is suggested that you mark any immovable object in the lawn and be careful around curbs, stumps, and wall edges. It is also recommended to push the mower around these objects instead of using a drive control setting.