Working machine

A working machine comprising:

• an output shaft;
• a rotary blade attached to the output shaft;
• a prime mover configured to rotate the output shaft;
• a housing that houses the prime mover and rotatably supports the output shaft;
• and
• a blade cover attached to the housing such that the blade cover is pivotable with respect to the housing about a pivot axis substantially coincident with a rotation axis of the output shaft,
• wherein the blade cover comprises a sidewall covering at least a part of a side surface of the rotary blade,
• the housing comprises a facing portion that faces a side surface of the sidewall that is opposite to a side surface of the sidewall that faces the side surface of the rotary blade,
• the sidewall comprises a first stopper and a second stopper,
• the facing portion comprises a first stopper receiver and a second stopper receiver,
• when the blade cover is pivoted in a first pivot direction of the blade cover, the first stopper contacts the first stopper receiver at a first contact position from an upstream side of the first pivot direction, and
• when the blade cover is further pivoted in the first pivot direction from a state where the first stopper is in contact with the first stopper receiver, the second stopper contacts the second stopper receiver at a second contact position from the upstream side of the first pivot direction.