The Hondamatic transmission utilizes variable hydraulic pressure and mechanical torque amplification to provide seamless job-handling power and excellent acceleration. Engine power drives a hydraulic pump. The pump, in turn, drives a hydraulic motor with variable fluid capacity. Utilizing pump and motor pistons and a variable-pitch motor-side swash plate, hydraulic capacity and pressure are varied, producing continuously variable output speed. In addition, torque is increased as output-shaft speed is reduced. Dash-mounted knob switches to one of three electronic shifting programs: D1 for maximum performance, D2 for maximum torque, and ESP®, Honda`s exclusive Electric Shift Program. D1 and D2 modes provide continuously variable transmission output; ESP allows the rider to 'shift' the Hondamatic with the touch of a thumb using two push-buttons mounted on the left handlebar. The Hondamatic is extremely efficient, with operating efficiencies ranging from 75-81 percent in full-reduction mode and from 87-92 percent when input and output speeds are the same (1:1 ratio). The Hondamatic is fully sealed, compact and maintenance-free, with no belts to wear out and replace. The Hondamatic features true engine braking, unlike conventional belt-drive designs. Versatile rider controls provide a shift lever to select Drive, Low, Neutral and Reverse. The Hondamatic uses multi-filtered (one large-capacity filter and three strainers) engine oil as hydraulic fluid, simplifying maintenance and ensuring an adequate oil supply in all operating conditions.