[Problem] A technique capable of improving the operability of an expansion-type operation device is provided. [0002] [Solution] An exemplary operation device includes: a lever stand that is disposed on a side of a seat and has an operation lever; a lever s...

A working machine includes a machine body; an operator's seat mounted on the machine body; a console disposed beside the operator's seat; and a communication device disposed inside the console. Furthermore, the console includes a first side wall portion lo...

A power source control circuit for a working machine includes an electric circuit connecting a key cylinder (3), controller (6) and accessories (2). The electric circuit is provided with a first self-holding relay (8) drivable directly by a relay drive sig...