A transaxle includes a continuously variable transmission including a speed control arm and a neutral return spring allowing a biasing force to act on the speed control arm toward a neutral position, the speed control arm configured to operate from the neutral position to a forward position or a backward position to perform a continuous speed variation. The biasing force does not act on the speed control arm when the neutral return spring ranges from the neutral position to a predetermined speed position on a forward movement side, and the biasing force acts on the speed control arm when the neutral return spring ranges from the predetermined speed position to a maximum speed position on the forward movement side.

A transaxle includes a continuously variable transmission including a speed control arm and a neutral return spring allowing a biasing force to act on the speed control arm toward a neutral position, the speed control arm configured to operate from the neutral position to a forward position or a backward position to perform a continuous speed variation. The biasing force does not act on the speed control arm when the neutral return spring ranges from the neutral position to a predetermined speed position on a forward movement side, and the biasing force acts on the speed control arm when the neutral return spring ranges from the predetermined speed position to a maximum speed position on the forward movement side.

An example pump includes: (i) a swash block having (a) a first trunnion arm on a first side of the swash block, and (b) a second trunnion arm on a second side of the swash block; and (ii) a housing including (a) a through-hole disposed on a respective first side of the housing, (b) a blind hole disposed on a respective second side of the housing opposite the respective first side thereof, and (c) an internal chamber. The swash block is supported within the internal chamber of the housing by the first trunnion arm being positioned in the through-hole of the housing and the second trunnion arm being positioned in the blind hole of the housing.

An example pump includes: (i) a swash block having (a) a first trunnion arm on a first side of the swash block, and (b) a second trunnion arm on a second side of the swash block; and (ii) a housing including (a) a through-hole disposed on a respective first side of the housing, (b) a blind hole disposed on a respective second side of the housing opposite the respective first side thereof, and (c) an internal chamber. The swash block is supported within the internal chamber of the housing by the first trunnion arm being positioned in the through-hole of the housing and the second trunnion arm being positioned in the blind hole of the housing.

An automatic throttle for a hydrostatic transmission having a forward pedal and a reverse pedal. Each pedal actuates a swash plate on a hydraulic pump for forward and reverse travel. A first bell crank and a second bell crank are connected to the forward pedal and the reverse pedal respectively. Each bell crank may pull a Bowden cable connected to an engine throttle to increase engine speed when either of the pedals is depressed.

An automatic throttle for a hydrostatic transmission having a forward pedal and a reverse pedal. Each pedal actuates a swash plate on a hydraulic pump for forward and reverse travel. A first bell crank and a second bell crank are connected to the forward pedal and the reverse pedal respectively. Each bell crank may pull a Bowden cable connected to an engine throttle to increase engine speed when either of the pedals is depressed.

A hydrostatic transmission assembly includes a first housing member and a housing cap sealed to the first housing member to form a sump wherein a pump and motor are rotatably disposed. A pump mount is located in the sump and engaged to the housing cap. The housing cap also includes a motor mount for an axial piston motor, and hydraulic fluid passages for connecting the pump to the motor. A pocket is located in the housing cap to rotationally support a swash plate for the pump.

A speed change control apparatus for a work vehicle includes a hydraulic continuously variable speed transmission that performs speed change on power input from an engine by changing a trunnion shaft angle based on a depressing amount of a speed change pedal and outputs the power, a pedal position detector that detects a pedal position responsive to the depressing amount of the speed change pedal, and a control unit that controls a number of revolutions of the engine and the trunnion shaft angle of the hydraulic continuously variable speed transmission based on a detection value of the pedal position detector. The control unit performs control so that the trunnion shaft angle is maximized at a second pedal position set to a position shallower than a first pedal position at which the number of revolutions of the engine is maximized by a depressing operation of the speed change pedal.

A tractor has a base for supporting a motive power source, left and right driven wheels, and left and right transmissions for the respective left and right wheels; a handle structure coupled to the base for grasping by an operator from behind the tractor; a drive system for driving each of the left and right transmissions with motive power from the motive power source; wherein the left and right transmissions are hydrostatic transmissions, further having a speed regulator control lever on each transmission that allows seamless control of the transmission from reverse speed through neutral into forward speed; and a transmission control coupled to each speed regulator control lever; further wherein there is a longitudinally disposed space between the left and right transmissions, and a power take off shaft is disposed in the space extending anteriorly and driven by the motive power source for powering a powered attachment arranged to be attached at the anterior of the tractor, further including a shaft extension of said power take off shaft extending posteriorly for driving a rear power take off for powering a rear mounted powered attachment.

A tractor has a base for supporting a motive power source, left and right driven wheels, and left and right transmissions for the respective left and right wheels; a handle structure coupled to the base for grasping by an operator from behind the tractor; a drive system for driving each of the left and right transmissions with motive power from the motive power source; wherein the left and right transmissions are hydrostatic transmissions, further having a speed regulator control lever on each transmission that allows seamless control of the transmission from reverse speed through neutral into forward speed; and a transmission control coupled to each speed regulator control lever; further wherein there is a longitudinally disposed space between the left and right transmissions, and a power take off shaft is disposed in the space extending anteriorly and driven by the motive power source for powering a powered attachment arranged to be attached at the anterior of the tractor, further including a shaft extension of said power take off shaft extending posteriorly for driving a rear power take off for powering a rear mounted powered attachment.