🏷️ Basic Information Identification Make: Mercury Mariner Model: 225 EFI 3.0 Marathon Year: Not Specified (Manual Covers Multiple Years) Generation: Not Specified 📋 Manual Details Content Manual Type: Service and Repair Manual Language: English Format: PDF / WINRAR Searchability: Fully Bookmarked and Searchable Authenticity: Factory Service Manual (dealer equivalent) Delivery Method: Instant Download Compatibility: Win95/98/ME/XP/vista/7/Linux/MAC Printable: All pages printable ⚙️ Engine Specifications General Engine Type: Outboard Engine Displacement: 3.0 Liters (Approx. 183 cubic inches) Fuel Delivery: Electronic Fuel Injection (EFI) Power Output: 225 Horsepower (approx.) Ignition System: Covered in detail Charging System: Covered in detail Starting System: Covered in detail Oil System: Oil Injection Rotation: Right Hand Rotation & Left Hand Rotation 🔧 Maintenance Scheduled Maintenance Service Intervals: Covered in detail (e.g., daily, weekly, monthly, seasonal) Lubrication Oil Capacity: Engine oil capacity: Specified within manual Gearcase Oil Capacity: Specified within manual Filters Fuel Filter Replacement: Procedures outlined Inspection Visual Inspections: Guidelines provided Adjustments Timing Synchronizing Adjustments: Detailed instructions provided 📄 Fuel System Components Fuel Pump: Service and repair procedures Carburetor: Service and repair procedures (if applicable to specific sub-models) Fuel Injection: Service and repair procedures 📄 Wiring Diagrams Electrical Systems Diagrams Included: Comprehensive wiring diagrams 📄 Powerhead Assembly Powerhead Overhaul: Detailed procedures for disassembly, inspection, and reassembly 📄 Mid Section Assembly Mid Section Service: Procedures for maintenance and repair 📄 Brackets Assembly Clamp Swivel Brackets: Service and repair information Drive Shaft Housing: Service and repair information 📄 Power Trim System Power Trim Service: Repair and maintenance procedures 📄 Lower Unit Assembly Lower Unit Overhaul: Detailed procedures for disassembly, inspection, and reassembly 📄 Emissions Compliance Emissions Control: Information related to emissions systems 📄 Controls Linkage Control Linkage Adjustment: Instructions for proper setup and adjustment