As a comparison, Honda uses their GSV160 and GXV160 engines on their commercial mowers. The GSV160 (160cc) on the push version is rated at 4.4 HP and 6.9 lbf ft torque, and the GXV160 (163cc) on their hydrostatic transmission commercial is rated at 4.3 HP and 7.1 lbf ft torque.