Push mowers require the manual force that propels them forward, whereas walking behind mowers has a transmission that moves the wheels forward and only requires steering. This feature, however, comes at an additional cost, weight and use more gas. The right choice depends upon the size of the yard, budget, terrain and fitness level. We carry Self Propelled Lawn Mowers with engines by top manufacturers including Briggs and Stratton Engine and more. Check out our most reviewed product, the 22 in. Recycler Briggs & Stratton High Wheel FWD Gas Walk Behind Self Propelled Lawn Mower with Super Bagger.