🏷️ Basic Information Identification Make: YANMAR Model: 4JH2 Series (4JH2E, 4JH2-TE, 4JH2-HTE, 4JH2-DTE) Year: Not Specified (Service Manual applies to multiple model years within the series) Generation: Not Applicable (Specific engine series) 📋 Manual Details Publication Manual Type: Service Repair Manual Language: English Page Count: Not Specified (Download PDF) Format: PDF Download Content Covered Procedures: Service, Repair, Assembly, Disassembly, Wiring Diagrams ⚙️ Engine Specifications Engine Details Engine Type: Marine Diesel Engine Cylinders: 4 Displacement: 1.618 L (98.7 cu in) Bore X Stroke: 86 mm x 70 mm (3.39 in x 2.76 in) Compression Ratio: 21.5:1 Power Output Power 4Jh2E: 30.2 kW (40.5 HP) @ 3600 RPM Power 4Jh2-Te: 38.2 kW (51.2 HP) @ 3600 RPM (Turbocharged) Power 4Jh2-Hte: 44.1 kW (59.1 HP) @ 3600 RPM (Turbocharged, Intercooled) Power 4Jh2-Dte: 44.1 kW (59.1 HP) @ 3600 RPM (Turbocharged, Direct Injection) Cooling System Cooling Type: Water Cooled (Direct or Indirect) Fuel System Fuel Type: Diesel 🔧 Transmission Drive System Type: Marine Gearbox (various models available, e.g., KM3A1, KM3A2, KM4A1) Gears: Not Applicable (Marine Gearbox with reduction gears) 🔧 Maintenance Lubrication Recommended Oil Type: API CF or ACEA E2 grade diesel engine oil (specific viscosity depends on ambient temperature) Oil Capacity: Approx. 5.7 Liters (6.0 US Quarts) with filter change Service Schedule Initial Service: First 20 hours or 1 month Regular Service Interval: Every 100 hours or 6 months (whichever comes first) Filters Fuel Filter Replacement: Recommended at regular service intervals Oil Filter Replacement: Recommended at every service interval