A utility vehicle drive and cooling system having a combined generator and coolant circulating pump assembly and at least one combined hydraulic pump and circulating pump is disclosed herein, for use in powering and cooling a utility vehicle, such as a ride-on or stand-on mower. The generator and coolant circulating pump assembly may also include a pulley driven by the prime mover to provide output to other components of the vehicle. A plurality of coolant reservoirs may be provided on the vehicle.