Solution. If the engine dies when the cutting deck is engaged, there is likely one of the following three possible scenarios: The riding mower is in a reverse gear. If the mowing deck is engaged and the unit is in reverse, the mower will shut down as part of a safety feature. An object or obstruction (such as an ant hill, clump of matted grass. Husqvarna 122C 5 HP Briggs & Stratton single cylinder with a Fast CVT Transmission, a 42-inch stamped metal deck, a 16-inch turning radius and a cutting height that can be adjusted from 1 The R322T is equipped with halogen headlights, perfect when mowing in the late evening The Husqvarna 7021P push mower is an excellent residential lawn mower.