Craftsman 917 Lawn Mower 6.5 HP Briggs and Stratton starting Craftsman 6.5 HP Lawn Mower Craftsman Model 917.387580 Mower. PHOTO Below: Location of the valve on the Craftsman 917 Model Mower. Water in gas? Craftsman YT 4000 46 inch 24 hp Riding Lawn the same mower with a manual transmission...