Manufacturer's Part Number: #121Q02-2025-F1Engine Buying Guide
Briggs & Stratton builds the engines most of America’s best leading power equipment brands depend on. We’re also the engine most preferred by consumers nearly 60 million households trust their yard care to Briggs & Stratton power. America’s most-trusted brands count on Briggs & Stratton power to stand behind their promise of performance. We know what it’s like to have your name on the line. For more than 100 years, we’ve been living up to ours. Vertical engine. Dura-bore cast iron cylinder sleeve for extended life. Large-tube muffler reduces noise levels. Overhead valve design (OHV) for cooler operation. Mechanical torque control for additional power. Large rewind starter reduces pulling effort for easy starting. Commercial-grade air cleaner with dual seals for longer engine life. Ready start provides easy no prime, no choke starting. Maintenance-free magnetron electronic ignition for quick, dependable starts. Crankshaft: 25 mm Dia x 3-5/32 in. L, 2 WK and keyway.
Product Depth (in.): 17
Product Width (in.): 16
Product Height (in.): 15
Engine Part Type: Engine
Starter Type: Recoil
Crankshaft Orientation: Vertical
Crankshaft: 25 mm Dia x 3-5/32 in. L, 2 WK and keyway.
Tapped: 3/8 - 24
Gross Torque: 8.5 ft/lbs*
Fuel Type: Gasoline
Crankshaft Dimensions: 25mm x 3-5/32"
Crankshaft Diameter: 25mm
Crankshaft Length: 3-5/32"
Crankshaft End Tapped Size: 3/8 - 24
Crankshaft Rotation Direction: Counterclockwise
Cylinder Bore Type: Cast Iron Sleeve
Air Cleaner Type: Dual Element
Oil Capacity (oz): 20
Choke Control: Ready Start
Max RPM: 3100
*All power levels are stated gross torque at 2600 RPM per SAE J1940 as rated by Briggs & Stratton.
Limited 2 year consumer use warranty. Limited 1 year commercial use warranty.