Yamaha's 225-hp 4-stroke

Yamaha Marine Group has scored a breakthrough in outboard technology with a startling reduction in the size and weight problems inherent in four-stroke engines

A Yamaha 225-hp four-stroke that's barely larger than a comparably powered two-stroke made the Japanese builder a repeat winner in the engine category of this year's Boating Week Innovation Awards competition.

Yamaha did what few thought was possible - build a practical four-stroke outboard with more than 200hp.

• Dry weight of 584 Pounds.
   
• Displaces 204.5 cubic inches.
   
• Generates 225 hp using
  unleaded gasoline.
   
• Exceeds EPA requirements
  for the year 2006.