Working machine

A working machine comprising:

• a machine body;
• a working device connected to the machine body and including a function portion to perform a function corresponding to a content of work while in contact with a work target object;
• a hydraulic actuator to switch between a first state in which the function portion is in contact with the work target object and a second state in which the function portion is not in contact with the work target object;
• a manual operator to be operated by a user in relation to actuation of the hydraulic actuator;
• and
• a controller configured or programmed to control the actuation of the hydraulic actuator;
• wherein
• the controller is configured or programmed to:
• derive a degree of contact of the function portion with the work target object based on a pressure of hydraulic fluid supplied to the hydraulic actuator;
• and
• if the derived degree of contact matches or substantially matches a preset optimal degree of contact, change an actuation state of the hydraulic actuator in action.