Bolens Mtd Lawn Mower Manual - From push to riding mowers to zero turns and even tractors, Briggs & Stratton engines power the highest quality lawn care equipment on the market.. The John Deere self propelled Lawn Mower JS46 comes with a 190 cc Briggs and Stratton engine, the work horse of the small engine industry. The engine is equipped with zone start recoil rope starting system which is one of the many safety features on this self propelled lawn mower. Operators must stand behind the lawn mower with the zone lever depressed to start the engine.. Go here to see the complete list of manufactures currently producing riding mowers, tractors and zero turns: Riding Mower Brands – The Complete list There is still a lot of confusion and mis-information about who makes the current lawn and garden tractors so I am going to list the information again differently so more of you can find the right info..