It has an 18.5hp Briggs Stratton twin opposed cylinder engine. I have owned it for approx.. 10 years and it was serviced annually by the Lawn Doctor but I have no idea of its model year! Heavy Duty 12 Gauge Deck. Briggs & Stratton InTek 18.5 OHV. Gears : 6 Forward and 1 Reverse. The item “Craftsman Briggs & Stratton 18.5 HP 42 Deck Riding Lawn Mower Tractor” is in sale since Thursday, November 03, 2016. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Lawnmowers\Riding Mowers”. The seller is “lawboss” and is located in Glenn Dale, Maryland. This item can’t be shipped, the buyer must pick up the item.