This is the Briggs & Stratton Intek Series 17.5 HP 500cc Vertical Shaft Engine 31R907-0022-G1.

This engine is primarily designed for riding mowers.

These engines are built with high-quality materials and advanced engineering to ensure long-lasting performance, dependability, and durability.

Features:

• Durable Construction: The engine includes a Dura-Bore cast iron cylinder sleeve, which is a feature highlighted by manufacturers and experts as key to its extended life.
  
• Reliable Starting: It is equipped with both a 12V electric starter and a manual recoil start backup, providing dependable ignition options. The maintenance-free Magnetron electronic ignition system also contributes to consistent starts.
  
• Cooler Operation: The Overhead Valve (OHV) design allows the engine to run cooler and cleaner, which improves fuel economy and extends engine life.
  
• Performance: The engine is described as providing dependable power for lawn tractors and mowers. It has a mechanical governor system to help maintain consistent performance.

Product Specifications:

• Engine Series Briggs & Stratton Intek Series
  
• Horsepower 17.5 HP (Gross)
  
• Displacement 500cc
  
• Cylinders Single
  
• Shaft Type Vertical
  
• Crankshaft Size 1" diameter x 3-5/32" length
  
• Starting System Electric start with recoil backup
  
• Ignition System Maintenance-free Magnetron electronic ignition
  
• Oil Capacity 48 fl. oz. (1.4 L)
  
• Fuel Delivery Carbureted, pulse fuel pump
  
• Air Filtration Premium pleated paper filter with foam pre-cleaner (Dual-Clean air cleaner)
  
• Charging System 9 Amp alternator
  
• Features Overhead Valve (OHV) design, Dura-Bore cast iron cylinder sleeve for extended life
  
• Warranty 2-year consumer use / 1-year commercial use limited warranty