This is the Briggs & Stratton Professional Series 25 HP 724cc Vertical Shaft Engine 44S977-0036-G1.
Our PXi2500 Series 25.0 Gross HP engines offer an excellent power to weight ratio. This ensures that you get maximum performance without sacrificing comfort and useability.
The model 44S977-0036-G1 boasts 724 CC, a 3.12 in. (79.25 mm) bore, and 2.89 in. (73.41 mm) stroke sending power to a robust 1-1/8 in. by 4-19/64 shaft.
Your new Briggs and Stratton engine is backed by a history of excellence as well as a very competitive warranty.