The Yard Force 21" Side Discharge Push Gas Mower uses the Briggs & Stratton 450E 125cc Professional Series engine with Prime N Pull Start. It is designed for grass cutting needs that are large and small, with a 21" steel deck for durability season after season. The mower features a side discharge with a high-impact deflector shield, allowing for easy grass disposal. The 3-position threaded wheel height adjustment allows you to customize the cutting height from 1.25" to 3.75". The handle can be folded in the center for more compact storage, making it convenient to store in small spaces. The Yard Force 21"" Side Discharge Push Gas Mower comes fully assembled and includes engine oil in the box. It also comes with a 2-year warranty on the engine and chassis, ensuring peace of mind. Whether you need to mow on various terrains or store the mower in tight spaces, this Yard Force mower is the perfect choice.