Patent ID: 7086227

Claim:
A hydrostatic transaxle applicable to a working vehicle having an engine, comprising: a housing; a variable displacement hydraulic pump disposed within said housing and driven by said engine; a variable displacement hydraulic motor, disposed within said housing, a capacity of which is switchable between a first capacity and a second capacity that is larger than said first capacity; a hydraulic circuit for fluidly connecting said hydraulic pump and said hydraulic motor with each other; a center section having said hydraulic circuit, disposed within said housing; an axle disposed within said housing driven by said hydraulic motor; a manual speed control member for changing a capacity of said hydraulic pump; and an actuator disposed on said center section for switching the capacity of said hydraulic motor between said first and second capacities, wherein the actuator is controlled so that the capacity of said hydraulic motor is set to said first capacity when load on said engine is less than a predetermined value, and set to said second capacity when load on said engine is not less than said predetermined value.