Engine BRIGGS STRATTON 500 4-stroke vertical shaft, heavy flywheel without engine brake Series 500 Heavy flywheel Displacement 140 cc Power 4 Hp Shaft 22x60mm Weight 9 Kg Tank capacity 0,8L The warranty is valid ONLY when using SAE 30 lubricating oil preferably BRIGGS STRATTON that you can find in our store by clicking HERE Briggs Stratton