A snow thrower comprising: a chute for discharging a snow stream from the snow thrower, the chute being pivotable about a pivot axis for varying the direction of the snow stream; characterized in that the snow thrower further comprises: a torsion member which is flexible and elongate having first and second longitudinally opposing ends, the first and second ends having respective first and second longitudinal axes (34, 35); a support member which is flexible and elongate, the support member receiving, or being received within the torsion member for supporting the torsion member to rotate; an actuator (31; 131) remote from the chute for applying torque to the first end of the torsion member about the first longitudinal axis, the actuator comprising: a shaft mounted to rotate about the first longitudinal axis, the shaft being connected to the first end of the torsion member; a first formation of helical shape extending longitudinally on the shaft; a hand grip (41, 141) at least partially surrounding the shaft and restrained to slide over the shaft a second formation on the hand grip (41, 141), the second formation being complementary with the first formation such that with the first and second formations (40, 46) engaged, linear reciprocating movement of the hand grip (41, 141) turns the shaft and the attached torsion member; and a coupling for transmitting torque between the second end of the torsion member and the chute such that the linear reciprocating movement of the hand grip (41, 141) produces bidirectional pivoting of the chute. a chute for discharging a snow stream from the snow thrower, the chute being pivotable about a pivot axis for varying the direction of the snow stream; characterized in that the snow thrower further comprises: a torsion member which is flexible and elongate having first and second longitudinally opposing ends, the first and second ends having respective first and second longitudinal axes (34, 35); a support member which is flexible and elongate, the support member receiving, or being received within the torsion member for supporting the torsion member to rotate; an actuator (31; 131) remote from the chute for applying torque to the first end of the torsion member about the first longitudinal axis, the actuator comprising: a shaft mounted to rotate about the first longitudinal axis, the shaft being connected to the first end of the torsion member; a first formation of helical shape extending longitudinally on the shaft; a hand grip (41, 141) at least partially surrounding the shaft and restrained to slide over the shaft a second formation on the hand grip (41, 141), the second formation being complementary with the first formation such that with the first and second formations (40, 46) engaged, linear reciprocating movement of the hand grip (41, 141) turns the shaft and the attached torsion member; and a coupling for transmitting torque between the second end of the torsion member and the chute such that the linear reciprocating movement of the hand grip (41, 141) produces bidirectional pivoting of the chute. a torsion member which is flexible and elongate having first and second longitudinally opposing ends, the first and second ends having respective first and second longitudinal axes (34, 35); a support member which is flexible and elongate, the support member receiving, or being received within the torsion member for supporting the torsion member to rotate; an actuator (31; 131) remote from the chute for applying torque to the first end of the torsion member about the first longitudinal axis, the actuator comprising: a shaft mounted to rotate about the first longitudinal axis, the shaft being connected to the first end of the torsion member; a first formation of helical shape extending longitudinally on the shaft; a hand grip (41, 141) at least partially surrounding the shaft and restrained to slide over the shaft a second formation on the hand grip (41, 141), the second formation being complementary with the first formation such that with the first and second formations (40, 46) engaged, linear reciprocating movement of the hand grip (41, 141) turns the shaft and the attached torsion member; and a shaft mounted to rotate about the first longitudinal axis, the shaft being connected to the first end of the torsion member; a first formation of helical shape extending longitudinally on the shaft; a hand grip (41, 141) at least partially surrounding the shaft and restrained to slide over the shaft a second formation on the hand grip (41, 141), the second formation being complementary with the first formation such that with the first and second formations (40, 46) engaged, linear reciprocating movement of the hand grip (41, 141) turns the shaft and the attached torsion member; and a coupling for transmitting torque between the second end of the torsion member and the chute such that the linear reciprocating movement of the hand grip (41, 141) produces bidirectional pivoting of the chute.