• for life boat only.
  • Clears requirements set forth by the SOLAS Convention and conforms to the Marine Equipmwnt Directive (MED:Council Directive 96/98EC on Marine Equipment).


  • Conform to IMO NOx Tier2 emissions regulations
  • 4-cylinder, direct injection, heat exchanger cooling.
  • Natural aspiration.
  • Yanmar YX marine gear is standard.

Main Data


Model 4JHYE
Number of cylinders 4 in-line
Bore × stroke [mm] 78 × 86
Displacement [lit.] 1.644
Rated output [kW(mhp)/rpm] M : 25.7(35)/3400
L : 29.4 (38)/3600
Combustion system Direct injection
Aspiration Natural aspirated
Starting system Electric motor (12V 1.8kW)
Cooling system Heat exchanger
Marine gear Hydraulic
Dry mass [kg] 243 with YX-10
Dimensions (L×W×H) [mm] 916×545×659 with YX-10

Power Chart

Power Range