PROBLEM TO BE SOLVED: To provide a mower unit allowing smooth mulching work by facilitating falling of cut grass in a rear guide.SOLUTION: A mower unit 2 includes: first to third rotary cutting blades 21-23 for cutting grass while rotating a box-shaped mower deck 20 in which the rotary cutting blades are rotatably stored and the bottom side is opened and first to third front guides 31-33 provided on a top surface 20t of the mower deck 20 while being outside first to third rotation loci 21b-23b of the outer end parts of the respective rotary cutting blades, in the front side part of the mower deck 20. When first to third rear guides 41-43 are mounted on a top surface 20ta of the mower deck 20 while being outside the rotation loci of the rotary cutting blades, in the rear side part of the mower deck 20, intervals between the rotation loci of the respective rotary cutting blades and the first to third rear guides, using as references the respective radial directions extending radially from the first to third centers of rotation of the respective rotary cutting blades, are partially different from each other.COPYRIGHT: (C)2014,JPO&INPIT【課題】刈草が後ガイドで落下し易くし円滑なマルチング作業を行えるモーアユニットの提供。【解決手段】回転しながら草を刈る第1回転刈り刃21~第3回転刈り刃23と、これら回転刈り刃が回転可能に収納された、底面側が開放された箱状体のモーアデッキ20と、モーアデッキ20の前側部において、各回転刈り刃の外端部の第1回転軌跡21b~第3回転軌跡23bの外側であってモーアデッキ20の天面20tに設けられた第1前ガイド31~第3前ガイド33とを備えたモーアユニット2であって、モーアデッキ20の後側部において、各回転刈り刃の回転軌跡の外側であってモーアデッキ20の天面20taに第1後ガイド41~第3後ガイド43が取り付けられたとき、各回転刈り刃の第1回転中心~第3回転中心からの放射状に延びるそれぞれの半径方向を基準とする、各回転刈り刃の回転軌跡と第1後ガイド~第3後ガイドとの間隔が少なくとも一部で異なる。【選択図】図4
