Abstract: In order to minimize unwanted corotation, a gear support member is in the shape of a flat disk and has an outer diameter greater than the pitch circle of a ring gear. Further, a surface level of lubricating oil stored in a casing is set to be below the ring gear, but above the gear support member. Furthermore, a resilient clip is resiliently fitted on an output shaft and gear support member, and the resilient clip has at least one end supported by the casing. In addition, the casing has, on its bottom, a frictional surface for sliding contact with the lower surface of the gear support member.

Abstract: A tiller includes an engine, a transmission mechanism, and a rotor shaft having tillage tines mounted thereon. The transmission mechanism transmits a motive power of the engine to the rotor shaft to thereby cause the tillage tines to perform a tilling operation. The tiller also includes a tranmission case having the transmission mechanism housed therein, and a fender disposed to cover the tillage tines. The fender is mounted to the tranmission case by bolts. Each bolt has a portion projecting downwardly from the fender. The tiller further includes a guard member extending downwardly from the transmission case to a level lower than the downwardly projecting portion of each bolt. The guard member guards the bolts against a foreign object thrown upwardly by the tillage tines during the tilling operation.

Abstract: In order to minimize unwanted corotation, a gear support member is in the shape of a flat disk and has an outer diameter greater than the pitch circle of a ring gear. Further, a surface level of lubricating oil stored in a casing is set to be below the ring gear, but above the gear support member. Furthermore, a resilient clip is resiliently fitted on an output shaft and gear support member, and the resilient clip has at least one end supported by the casing. In addition, the casing has, on its bottom, a frictional surface for sliding contact with the lower surface of the gear support member.

Abstract: A tiller includes an engine, a transmission mechanism, and a rotor shaft having tillage tines mounted thereon. The transmission mechanism transmits a motive power of the engine to the rotor shaft to thereby cause the tillage tines to perform tilling operation. The tiller also includes a transmission case having the transmission mechanism housed therein, and a fender disposed to cover the tillage tines. The fender is mounted to the transmission case by means of bolts. Each bolt has a portion projecting downwardly from the fender. The tiller further includes a guard member extending downwardly from the transmission case to a level lower than the portion of each bolt. The guard member guards the bolts against a foreign object thrown upwardly by the tillage tines under the tilling operation.