Swivel work machine

A swivel work machine comprising:

• a travel device;
• a swivel base provided on the travel device;
• an implement provided to a front portion of the swivel base, the implement being capable of being pivoted to the right or left;
• a dozer provided to the travel device, the dozer being supported so as to be capable of being pivoted vertically, of being pivoted about an angle pivot shaft extending vertically, and of being pivoted about a tilt pivot shaft extending in a fore-and-aft direction;
• a swing control, an actuation of which causes the implement to be pivoted to the right or left;
• a dozer control, an actuation of which causes the dozer to be pivoted vertically;
• a tilt control member provided to the dozer control, an actuation of the tilt control member causing the dozer to be pivoted about the tilt pivot shaft;
• a controller having a swing control mode in which an actuation of the swing control causes the implement to be pivoted vertically, and an angle control mode in which an actuation of the swing control causes the dozer to be pivoted about the angle pivot shaft;
• and
• a mode change-over portion for switching a control mode of the controller between the swing control mode and the angle control mode.