Main Engine 4-Stroke · Main Engines (4-Stroke)
This marine propulsion engine operates on a 4-stroke compression ignition cycle, utilizing direct injection for efficient fuel combustion. The Yanmar Power Technology Co., Ltd. model KYDXN2.76E4C, manufactured in 2019, delivers a consistent 147 kW of power at 3500 RPM with a torque of 496 Nm, suitable for variable speed propulsion systems with fixed pitch propellers. The engine is designed with a turbocharged system and features a total displacement of 2.8 liters across four cylinders, each with a 0.6 liter displacement. The EPA-certified engine falls under IMO Category 1, ensuring compliance with international marine emissions standards. Common operational issues include fuel-injection contamination, lubricating oil deterioration, cooling system fouling, charge air restriction, and valve train wear. Regular maintenance should focus on monitoring oil pressure, coolant temperature, exhaust temperatures, and overall machinery condition. Critical spare parts, such as fuel and oil filters, valve train consumables, and turbocharger components, should be selected based on the specific engine serial number and installed configuration, as detailed in the manufacturer's documentation.
What our service work and the manufacturer documentation say about keeping this model running.
Review operating trends for lubricating-oil pressure, coolant temperature, exhaust temperatures, load balance, crankcase condition and abnormal vibration or noise. Inspect filters, coolers, fuel equipment, valve gear, turbocharging equipment, mounts, flexible connections and safety shutdown devices in accordance with the installed configuration. Check for fuel, oil, coolant and exhaust leakage and verify that protective alarms and shutdowns are functional. A surveyor will normally look for evidence of disciplined maintenance, clean machinery spaces, leak control, intact guards and reliable safety functions. Use the engine serial number and manufacturer documentation for all exact wear limits, adjustment values and overhaul criteria.
Useful onboard spares typically include fuel-system service items, lubricating-oil and fuel filters, cooling-system seals, belts where fitted, valve-train consumables, injector-related service parts, sensors and common gaskets or O-rings. Critical spares should be selected against the exact engine serial number, installed emissions package and vessel redundancy; refer to the manufacturer parts documentation before ordering.
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