223CC R225 EPA3. Air Cooled, 4-stroke, Our Head Valve (OHV). 3/4" Keyed Shaft ENGINE SPECIFICATIONS Model: Powerease 225 Type: Air-Cooled, 4-Stroke OHV Displacement: 223 cc Net Power: 6.03 HP @ 3,600 RPM Net Torque: 9.1 ft-lb @ 2,500 RPM Fuel Type: Unleaded Gasoline Minimum Octane: 86 or higher Maximum Ethanol: 10% Fuel Tank Capacity: 3.6 L (0.95 US gal) Oil Type: SAE 10W-30 Oil Capacity: 0.6 L (0.63 US qt) Lubrication: Forced Splash Compression Ratio: 8.4:1 Starting System: Recoil Shaft Type: Keyed 3/4" Horizontal Shaft Rotation: Counterclockwise (viewed from PTO side) Valve Clearances: 0.06" Intake / 0.08" Exhaust