🏷️ Basic Information Identification Make: Mercury MerCruiser Model: GM V8 7.4L / 8.2L Engine Family: GM V8 454 cid (7.4L) / 502 cid (8.2L) Generation: Gen. VI and L-29 Engines 📋 Manual Details Documentation Manual Type: Service Manual Format: PDF Download Language Language: English ⚙️ Engine Specifications General Engine Type: V8 Displacement Displacement Cubic Inches: 454, 502 Displacement Liters: 7.4, 8.2 Fuel System Fuel System Type: Multi-Port Fuel Injection (MPI) Ignition Ignition System Type: Electronic Ignition Cooling System Cooling System Options: Seawater Cooled, Closed Cooled (Fresh Water) Power Power Output Note: Specific power ratings not provided in the product description, but typically in the 300-400+ HP range depending on configuration. 🔧 Transmission Sterndrive Models Sterndrive Options: Bravo and Blackhawk Drives Inboard Models Inboard Transmission Options: Velvet Drive (In-line, 5000A Down Angle, 5000V V-Drive), Hurth (V-Drive), Walter V-Drive Gears Gear Ratio Note: Gear ratios are specific to the transmission model and drive type, not detailed in the product description. 🔧 Maintenance Troubleshooting Troubleshooting Sections: General, Engine, Electrical System, Fuel System, Cooling System, Exhaust System, Drives, Power Steering Diagnostics Trouble Code Diagnostics: 454/502 Mag MPI & 8.2L MPI, 7.4L MPI 📄 Vehicle Fitment Sterndrive Mcm Model Mcm 454 Mag Mpi: 0L010029 & Up Model Mcm 502 Mag Mpi: 0L017000 & Up Model Mcm 7.4L Mpi: 0L010003 & Up Inboard Mie Model Mie 454 Mag Mpi Horizon: 0L002200 & Up Model Mie 8.2L Mpi: 0L002450 & Up Model Mie 7.4L Mpi: 0L002006 & Up