A lawnmower includes a chassis a seat supported on the chassis for permitting an operator to sit or stand on the chassis a pair of drive wheels for supporting the chassis above a ground surface an engine and a pair of transmissions for driving the drive wheels and a pair of manually-moveable handle assemblies for controlling the transmissions. Each handle assembly includes a substantially vertically-extending control handle, wherein the control handles are mounted outboard of opposite sides of the seat so as not to block the operators ingress or egress from the seat.