Abstract: A transmission for a self-propelled working vehicle (100) including an engine (2), and a load source (5, 21) adapted to be driven with drive power from the engine (2), in which the transmission (6) is interposed between the engine (2) and the load source (5, 21) and adapted to transmit the drive power to the load source (5, 21) while shifting same into one of at least two speed modes.The transmission comprises at least two input gear members (37, 38) to which the drive power of the engine (2) is transmitted, at least two output gear members (48, 49) each respectively meshed with one of the input gear members (37, 38), a changeover mechanism (52, 11, 48a, 49a, 10) for selectively bringing any one of the output gear members (48, 49) into operative connection to the load source (5, 21), and a friction type power transmitting mechanism (9) interposed between the engine (2) and the input gear members (37, 38).

Abstract: A self-propelled working vehicle including an engine, a working implement and a running mechanism driven both by the engine, and a friction disc type main transmission for transmitting the driving power of the engine to the running mechanism. The working vehicle has a sub-transmission interposed between the engine and the main transmission.