To solve a problem in which the biasing and movement of the weight and gravity center position are large to a mowing machine vehicle body, in a configuration for laterally inclining and turning an engine mounting posture to the vehicle body, and inclining and turning the engine mounting posture by a proper angle according to a slope of the mowing ground, and therefore the mowing traveling is easy to become unstable.SOLUTION: A mowing deck 3 is configured in a lifting/lowering manner by front/rear two pairs of forward-climbing parallel links 8, 9 pivoting a link front end in the vehicle body 5 side and a rear end in the mowing deck 3 side. An engine base 15 is provided in the left/right tilt turning manner. It is arranged in the order of a drive shaft 11, a blade shaft 2 and a counter shaft 14 from the front in a plan view, and in the order of a V-belt 58, a driving belt 10 and a reaping belt 19 from the top. Also, a virtual centerline L between front/rear supporting members 16, 16 for tilting and turning the engine base 15 is substantially aligned with a beltline A1 of driving belt 10 in the uppermost position of the mowing deck 3, in side view.SELECTED DRAWING: Figure 1【課題】車体に対してエンジン搭載姿勢を左右に傾斜回動して、エンジンの搭載姿勢を、草刈り地面の傾斜面に応じて適宜角度傾斜回動させる形態にあっては、草刈機車体に対する重量、重心位置の偏倚、移動が大きく、草刈走行が不安定になり易い。【解決手段】リンク前端部を車体５側に、後端部を草刈デッキ３側に枢支した前後二対の前方登り傾斜の平行リンク８，９によって草刈デッキ３を昇降可能に構成し、エンジンベース１５を左右傾斜回動可能に設け、平面視、前から駆動軸１１、ブレード軸２、カウンタ軸１４の順に、上からＶベルト５８、駆動ベルト１０、刈取ベルト１９の順に配置すると共に、エンジンベース１５を傾斜回動させる前後支持部材１６，１６間に亘る仮想のセンタラインＬと、草刈デッキ３最上位置での駆動ベルト１０のベルトラインＡ１とを側面視で略一致させて構成する。【選択図】図１
