🏷️ Basic Information Identification Make: Mercury MerCruiser Model: V-8 Diesel D7.3L D-Tronic / D7.3L D-Tronic LD Year: 1998 Generation: 1998 Production Model Years 📋 Manual Details Publication Manual Type: Service Repair Manual Download (Supplement to #27) Language: English Page Count: 271 Format: PDF Access Downloadable: Yes Compatibility: All Versions of Windows & Mac Software Requirements: Adobe PDF Reader Features Zoom Functionality: Yes ⚙️ Engine Specifications General Engine Type: V-8 Diesel Engine Family: D7.3L D-Tronic Displacement Displacement: 7.3 Liters Performance Turbocharged: Tronic (implies turbocharging) Fuel System Fuel Type: Diesel Cooling System Cooling Method: Marine Cooling System (details in manual) Maintenance Oil Type Specification: Refer to Manual Section 1 for specific oil specifications Coolant Type Specification: Refer to Manual Section 7 for corrosion protection and coolant details Performance Tuning Tuning Guidance: Service guide for disassembly, assembly, inspection, and adjustment 🔧 Transmission Type Marine Drive Type: Sterndrive (indicated by 'Sterndrive Unit' in ToC) Components Steering System Integration: Covered in Section 6 Power Trim System: Covered in Section 5 🔧 Maintenance General Maintenance Maintenance Guidance: Maintain and service equipment using detailed diagrams and manufacturer specifications Corrosion Protection Corrosion Prevention: Covered in Section 7 Troubleshooting Repair Instructions: Step-by-step repair instruction and maintenance specifications Parts Replacement Component Removal Installation: Covered in Section 2 📄 Technical Features Documentation Diagrams Illustrations: Detailed diagrams and manufacturers specifications, photos and illustrations Manual Purpose: Service Guide for MerCruiser models to keep in top operating condition Assembly Disassembly: Procedures for disassembly, assembly, inspection, and adjustment Application Engine Serial Number Range: OLO50050 and Above