Poulan Pro 960420181 15.5 hp 6-Speed Lever Riding Tractor Mower, 42" The 42 in. vented stamped deck draws air from the top of the deck, helping to keep the air flow moving under the deck in longer grass You can also mulch or bag with the optional attachments With the all steel gear 6 speed transmission, picking the speed you need to get the job done right is easy Durability and performance delivered by a 155 HP Briggs & Stratton single cylinder Overhead Valve Engine with an easy to service air filter Design to run cooler and cleaner, delivering more power when needed Oscillating Front Axle for level cutting is coupled with a floating deck to provide you level cut even in rough terrain 6 cutting positions provide you the flexibility to adjust the tractor's cutting deck to best match the current condition of your yard and the desired length of your grass