This is the Briggs & Stratton Vanguard 18 HP 570cc Vertical Shaft Engine 356777-0154-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:

• 570cc 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 Series: Briggs & Stratton Vanguard Series
  
• Horsepower: 18 HP
  
• Engine Displacement: 570 cc
  
• Mounting: Vertical shaft
  
• Crankshaft Extension: 1" diameter x 3-5/32" length, tapped 7/16"-20 with a 1/4" keyway
  
• Valve Type: Overhead Valve (OHV)
  
• Cylinder Sleeve: Dura-Bore cast iron sleeve for extended life
  
• Lubrication: Full pressure lubrication with spin-on oil filter
  
• Starter Type: Electric start with 16 amp alternator
  
• Fuel System: Has a fuel pump (less a fuel tank) and a float feed type carburetor
  
• Air Cleaner: Dual-Clean pleated paper air filter with a foam pre-cleaner
  
• Choke/Throttle Type: Remote choke and remote throttle control
  
• Oil Capacity: 1.5 quarts (1.4 L)
  
• Recommended Oil: Synthetic 5W-30 or 10W-30

Note: Due to the nature of engines and the inability to verify installation, handling, or operating conditions once delivered, this product is not eligible for return.