... riding mower, lawn tractor, rider , ride on mower 12.5 B&S engine, electric starting,side discharge ride on mower 30 ... riding mower, lawn tractor, rider, ride on mower 12.5 B&S engine, electric starting,side discharge ride on mower1. Rotary ... Total Displacement: 346CC7. Controlling System: Mechanical system8. Changable gears: 5 for advancing,1 for countermarching, 1 for braking9. Discharging method ...