Briggs & Stratton 44T977-0054-G1 Commercial Series 25 HP 724cc Vertical Shaft Engine

The Briggs & Stratton 44T977-0054-G1 is a professional-grade Commercial Series engine delivering 25 horsepower from a robust 724cc displacement. This vertical shaft engine is designed for demanding commercial applications including zero-turn mowers, riding mowers, and other heavy-duty outdoor power equipment.

Engine Design and Performance:

• 724cc V-Twin 4-stroke OHV (overhead valve) configuration delivers commercial-grade power and efficiency
• 25 gross horsepower rating for demanding commercial applications
• Bore and stroke: 3.12" x 2.89" for optimal torque characteristics
• 1" diameter vertical shaft with 3-5/32" usable length and 1/4" keyway
• Dura-Bore cast iron cylinder sleeve for extended engine life and improved oil control

Advanced Features:

• 5-stage integrated cyclonic air cleaner provides superior protection against airborne debris
• Full pressure lubrication system with spin-on oil filter and integrated oil cooler minimizes wear
• Mechanical governor for smooth, stable operation under varying loads
• Electric start system with 16 amp charging system and regulator
• Maintenance-free Magnetron electronic ignition for reliable starting
• Forced air cooling system maintains optimal operating temperatures

Commercial-Grade Construction:

Engineered for reliability and durability in commercial turf care applications, this engine features precision components designed to withstand the rigors of daily professional use. The balanced V-Twin design reduces vibration while the overhead valve technology ensures cooler operation and extended valve life.

This engine is factory-packed and ready for installation. Requires unleaded gasoline (86 octane or higher). Backed by Briggs & Stratton's 2-year limited warranty for both consumer and commercial use.