🏷️ Basic Information Identification Make: Mercury MerCruiser Product Type: Stern Drives & Inboards Years Covered: 1964-1991 Models Covered Models: 110, 120, 2.5L, 140, 3.0L, 150, 160, 165, 170, 3.7L, 470, 175, 180, 185, 190, 200, 205, 215, 225, 228, 230, 233, 250, 255, 260, 270, 280, 310, 320, 325, 330, 4.3L, 485, 488, 888, 898, 5.0L, 5.7L, 7.4L, ALPHA MR 📋 Manual Details Documentation Manual Type: Repair Manual / Workshop Manual / Owner's Manual / Parts Catalog Format: Electronic Downloadable PDF Availability Delivery Method: Instant Download Shipping Cost: None Support Policy: Lifetime Protection Policy (if lost or damaged) Content Covered Topics: General Information, Routine Maintenance, Engine Removal and Installation, Fuel System, Lubrication and Cooling System, Engine Specifications, Transmission, Drive Chain & Sprockets, Steering System, Shocks, Body Work, Intake & Exhaust, Electrical System, Advanced Troubleshooting ⚙️ Engine Specifications General Engine Displacement Common: Ranges from 2.5L to 7.4L Engine Configuration Common: Inline 4-cylinder, Inline 6-cylinder, V6, V8 (Specific configurations vary by model) Cooling Cooling System: Raw water cooling or freshwater cooling systems (details within manual) Fuel System Fuel Delivery: Carbureted (varies by model and year, some EFI may be present in later models) 🔧 Transmission Drive Type Drive System: Stern Drive / Inboard Gear Ratio Gear Ratios: Various ratios available depending on the specific drive unit and application (details within manual) Drive Chain Drive Chain And Sprockets: Covered in manual for relevant models 🔧 Maintenance Routine Maintenance Service Intervals: Details for oil changes, filter replacements, spark plug checks, impeller replacement, etc. (specific intervals vary by model and usage) Lubrication Engine Oil Capacity: Varies by engine size and configuration (e.g., 5 US quarts for a 3.0L, 6 US quarts for a 5.0L - check manual for specific models) Drive Oil Capacity: Varies by drive unit (e.g., approximately 1.5 US quarts for Alpha One - check manual for specific models) 📄 Electrical System Ignition Ignition System: Distributor-based ignition systems common throughout this period Charging Charging System: Alternator or generator systems depending on model and year Troubleshooting Wiring Diagrams: Included for various electrical components 📄 Fuel System Carburetor Carburetor Models: Various models from manufacturers like Rochester, Carter, Holley (specifics in manual) 📄 Steering System Operation Steering Mechanism: Cable steering or hydraulic steering systems (details within manual)