A walk-behind self-propelled snow-removing machine includes a snow-removing-unit posture control member disposed on an operating section at one side thereof, a travel ready lever comprised of a deadman's lever mounted on one operation handlebar at the other side of the operating section, and a mode selector switch disposed on the operating section and located forwardly of the travel ready lever for selecting one of plural alternative snow removing operation modes that are set in advance in a control unit on the basis of a travel speed of a machine body, a revolving speed of an engine, and an opening of a throttle valve.
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