PROBLEM TO BE SOLVED: To provide a riding-type lawn mower equipped with a front mower for sure stopping of the drive of the mower, at rising of the mower.SOLUTION: The riding type lawn mower is equipped with a lever lock cam 62, furnished with two latching valley parts 62c and 62d for latching the roller 63 of a PTO lever 61 to be retained at positions corresponding to the disengaging and engaging positions of a mower drive clutch 30a, by the operation of the clutch 30a for transmitting engine power to the mower 6 and the PTO lever 61, which has the roller 63 arranged in the vicinity of a rotary fulcrum 61a attached to the base side, and a connection mechanism, such as, a wire 66 for moving the roller 63 of the PTO lever 61, located at the latching valley part 62d, corresponding to the engagement position of the clutch 30a of the lever lock cam 62, when the mower 6 is raised to the latching valley part 62c, which corresponds to the disengagement position of the clutch 30a. When the mower 6 is raised by a fixed amount with a simple constitution, the PTO lever 61 is moved, the power is shut off, and the drive of the mower 6 is stopped.COPYRIGHT: (C)2009,JPO&INPIT【課題】モーア上昇時に確実にモーアの駆動を停止させることができるフロントモーアを備えた乗用芝刈機を提供すること。【解決手段】モーア6にエンジン動力を伝達するモーア駆動用クラッチ30aと基部側に設けた回動支点61aの近傍に設けたローラ63を有するPTOレバー61を操作してクラッチ30aの切り位置と入り位置にそれぞれ対応した位置に保持するPTOレバー61のローラ63を係止する2つの係止谷部62c、62dをレバーロックカム62に設け、モーア6を上昇させるとレバーロックカム62のクラッチ30aの入り位置に対応した係止谷部62dにあるPTOレバー61のローラ63をクラッチ30aの切り位置に対応した係止谷部62cに移動させるワイヤ66などの連携機構を備えた乗用芝刈機であり、簡単な構成でモーア6を所定量上昇させるとPTOレバー61が動いて動力を遮断し、モーア6の駆動を絶つことができる。【選択図】図7