Transmission for Internal Combustion Engine

摘要

A compact transmission for an internal combustion engine in a saddle ride type vehicle for operating on wasteland that effectively utilizes space and enables members to be laid out freely. A transmission for internal combustion engine, includes a crankshaft disposed in parallel to the operating direction of a vehicle body. A forward-running/backward-running changeover mechanism is provided wherein the supply sources of a working oil and a lubricating oil for an automatic transmission are arranged concentratedly on the side of a front crankcase cover. The changeover mechanism is provided between a rear crankcase and a rear crankcase cover. A forward-running/backward-running changeover shift drum is disposed on the upper side of a plane containing the axis of a main shaft and the axis of a counter shaft of the transmission. One end portion of a shift spindle projects from the rear crankcase cover at a position on a lateral side of the shift drum.