This is the Briggs & Stratton Vanguard 23 HP 627cc Vertical Shaft Engine 386777-0011-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:

• Horsepower: 23.0 HP (Gross)
  
• Engine Displacement: 627 cc
  
• Engine Type: Small Block V-Twin, Overhead Valve (OHV), Vertical Shaft
  
• Fuel Type: Gasoline
  
• Cylinders: 2, V-Twin arrangement with Dura-Bore cast iron sleeves
  
• Oil Capacity: 48 fl oz
  
• Lubrication: Full pressure lubrication with spin-on oil filter
  
• Cooling System: Air-cooled
  
• Starting System: Electric start
  
• Shaft Diameter: 1-1/8 inches