PROBLEM TO BE SOLVED: To provide a grass mower capable of promptly stopping rotation of a cutting blade when power transmission to the cutting blade is cut off. A mower includes a prime mover, a cutting blade that rotates by the power of the prime mover to mow grass, a first state in which the power of the prime mover is transmitted to the cutting blade, and the power of the prime mover is the cutting blade. A cutting blade clutch mechanism that can switch to a second state in which the cutting blade clutch mechanism is switched to the second state, and a brake mechanism that stops rotation of the cutting blade when the cutting blade clutch mechanism is switched to the second state. .. [Selection diagram] Fig. 13【課題】刈刃への動力伝達を遮断したときに刈刃の回転を速やかに停止させることができる草刈機を提供すること。【解決手段】草刈機は、原動機と、前記原動機の動力により回転して草を刈る刈刃と、前記原動機の動力を前記刈刃に伝達する第１状態と、前記原動機の動力を前記刈刃に伝達しない第２状態とに切り換え可能な刈刃クラッチ機構と、前記刈刃クラッチ機構が前記第２状態に切り換えられたときに、前記刈刃の回転を停止させるブレーキ機構と、を備えている。【選択図】図１３
