3YM30 Engine SpecificationsSpecification 3YM30Marine Gear Model KM2P-1 SD-20Use Pleasure useType Vertical water cooled 4-cycle diesel engineCombustion System Swirl pre-combustion chamberAir Charging Natural aspirationNumber Of Cylinders 3Bore X Stroke 76 mm x 82 mm (2.99 in. x 3.23 in.)Displacement 1.115 L (68.04 cu in.)ContinuousRated OutputOutput AtCrankshaft / EngineSpeed20.1 kW (27.3 hp metric) / 3489 rpm*MaximumRated OutputOutput AtCrankshaft / EngineSpeed22.1 kW (30.0 hp metric) / 3600 rpm*21.3 kW (29.0 hp metric) / 3600 rpm**Output AtPropeller / EngineSpeed21.4 kW (29.1 hp metric) / 3600 rpm*20.7 kW (28.1 hp metric) / 3600 rpm**-Installation Flexible mountingFuel Injection Timing FID 16 ± 1˚ BTDCFuel Injection Opening Pressure 12.3 - 13.28 MPa (125 - 135 kgf/cm2)Main Power Take Off At flywheel endDirection OfRotationCrankshaft Counterclockwise viewed from sternPropeller Shaft(Ahead)Clockwise viewed from stern -Cooling System Closed coolant system with heat exchangerLubrication System Complete enclosed forced lubrication systemCoolant Capacity Engine 4.9 L (5.2 qt), Coolant recovery tank: 0.8 L (0.85 qt)LubricatingOil Capacity(Engine)Rake Angle at rake angle 8˚ at rake angle 0˚Total*** 2.8 L (2.96 qt) 2.5 L (2.64 qt)Effective**** 1.4 L (1.48 qt) 1.5 L (1.59 qt)StartingSystemType ElectricStarting Motor DC 12 V - 1.4 kWAC Alternator 12 V - 60 A (12 V - 80 A optional)SPECIFICATIONSYM Series Operation Manual 79© 2007 Yanmar Marine International