Equipped with Poulan Pro’s all-new 174cc Power Series high-performance engine with auto-choke, the PR174N21RH3 lawn mower is designed and engineered for easy, no-prime starting, excellent balance, and low vibration. With a durable, multi-function, 21″ steel cutting deck, it’s capable of side discharging, mulching, and rear bagging — with no tools required to change modes. High 11″ rear wheels provide excellent control and maneuverability on flat, hilly, and uneven terrain. Plus, heavy-duty engine components and steel construction provide exceptional durability and long life.