2002 Yamaha 250 HPDI 25" Outboard Boat Motor Engine

• Engine Type: V6, 2-stroke
• Displacement: 4.2L
• Horsepower: 250 HP
• Maximum RPM: 5500 rpm
• Shaft Length: 25"
• Fuel System: High-Pressure Direct Injection (HPDI)
• High-Pressure Fuel Pump: 

  The HPDI system uses a high-pressure fuel pump to inject fuel directly into the combustion chamber at extremely high pressures (up to 1,000 PSI on larger blocks).
• Superior Atomization: 

  This high pressure results in finer fuel atomization, leading to a more complete and efficient combustion process.
• Power & Efficiency: 

  The goal of the HPDI system was to combine the raw power and lightweight nature of a 2-stroke with the superior fuel efficiency, cleaner emissions, and reduced fuel waste of advanced direct injection.