A turf aerator has a chassis and a motor mounted on the chassis between a front end and a rear end of the chassis and between a first side and a second side of the chassis. A first shaft is rotatably driven by the motor, a first inner tine assembly mounted to a first portion of the first shaft, a second inner tine assembly mounted on the first shaft, and a first outer tine assembly mounted to a second portion of the first shaft. A tine cover is removably secured to the chassis over at least one of the first inner tine assembly and the first outer tine assembly.