This is the Briggs & Stratton Vanguard 16 HP 479cc Horizontal Shaft Engine 305442-0613-F1.

This engine is designed for commercial applications and features an overhead valve (OHV) design and full pressure lubrication with a spin-on oil filter for extended component life.

Features:

• Dura-Bore Cast Iron Sleeve: Ensures extended engine life, especially in demanding applications.
  
• Dual-Clean Air Cleaner: Features a pleated paper filter with a foam pre-cleaner to provide maximum protection against dirt ingestion.
  
• Float Carburetor: Designed for consistent and easy starting.
  
• Warranty: Comes with a 3-year limited commercial warranty.

Product Specifications:

• Power Rating 16 HP (horsepower)
  
• Engine Displacement 479 cc
  
• Cylinders 1, with Dura-Bore cast iron sleeve
  
• Mounting Horizontal
  
• Starter Type Electric start with 16 Amp alternator
  
• Shaft Type/Size Tapered shaft; 1 inch diameter
  
• Oil Capacity 1.5 qt (48 fl. oz., or 1.4 L)
  
• Fuel Tank Capacity None (pulse fuel pump included)
  
• Muffler Not included