This is the Briggs & Stratton Vanguard 23 HP 627cc Vertical Shaft Engine 386777-0143-G1.

The Small Block V-Twin Vanguard engine is designed-engineered to handle the most demanding commercial applications.

Energetic and quick starting, these powerhouse engines feature a number of advanced technologies and integrated components, while also being lighter and more compact than leading competitor's engines.

Features:

• 627cc Displacement: Balances power and efficiency effectively.
  
• Advanced Debris Management
  
• Dura-Bore Cast Iron Cylinder Sleeve
  
• Full Pressure Lubrication w/ Spin-On Oil Filter
  
• EPA compliant: Which means it meets all stringent environmental standards, ensuring reduced emissions and a cleaner running engine.

Product Specifications:

• Engine Type 4-stroke, OHV (Overhead Valve), V-Twin
  
• Horsepower (HP) 23 HP (Gross)
  
• Displacement 627 cc
  
• Cylinder Sleeve Dura-Bore Cast Iron
  
• Shaft Orientation Vertical Shaft
  
• Lubrication System Full pressure lubrication with spin-on oil filter
  
• Starting System 12 Volt Electric Start with 16 amp alternator
  
• Fuel Type Gasoline
  
• Oil Capacity 1.65 L (1.74 US qt) with filter
  
• Air Cleaner Dual-Clean (pleated paper filter with foam pre-cleaner)