🏷️ Basic Information Identification Make: Mercury Model: Jet Outboard Power Range Hp: 100-140 HP (also covers 60, 65, 75, 80, 100, 125, 135, 140, 200, 225, 250 DFI) Generation: Multiple (specific serial number ranges indicated for certain sections) 📋 Manual Details Description Manual Type: Service Manual / Workshop Manual Language: English Format: PDF Download Indexing Total Sections: Numerous (as indicated by the detailed index) ⚙️ Engine Specifications General Engine Type: Outboard Jet Ignition Ignition Systems: Capacitor Discharge Ignition (CDI), Alternator Driven Ignition (Mechanical Advance and other variations), Digital Inductive Ignition (DI) Fuel System Fuel Systems: Carbureted, Electronic Fuel Injection (EFI), Direct Fuel Injection (DFI) Power Head Power Head Maintenance: Includes disassembly, assembly, cleaning, inspection, fasteners, torque, lubricants, sealants, and adhesives. 🔧 Transmission Lower Gearcase Jet Drive Component: Lower Gearcase and Jet Drive Units Maintenance: Includes bearing housing, corrosion control, gear ratio, cleaning, inspection, disassembly, assembly, lubrication, operation, pressure testing, shimming, and high-altitude operation. Jet Pump Component: Jet Pump Unit Maintenance: Includes maintenance and service procedures. 🛡️ Safety Features Precautions Context: General safety precautions for servicing and troubleshooting. 🔧 Maintenance Tune Up Procedures: Comprehensive tune-up procedures including lubrication, anti-corrosion maintenance, cooling system flushing, engine submersion, and off-season storage. Fuel System Maintenance Components: Carburetors (WME, WMH, WMV, WO/Mercarb series), fuel filters, fuel pump, fuel lines, primer bulbs, fuel tanks, and reed valve service. Lubrication Scope: Detailed lubrication guidelines for various components, including gearcases and powerheads. Anti Corrosion Procedures: Specific procedures for anti-corrosion maintenance. 📄 Electrical Systems Charging System Components: Alternator driven capacitor discharge ignition, battery charging systems. Ignition System Types: Capacitor Discharge Module (CDM), Digital Inductive (DI), Alternator Driven. 📄 Troubleshooting General Scope: Extensive troubleshooting sections covering various systems including fuel, ignition, electrical, engine, and starting systems. Specific Systems Systems Covered: DFI air/fuel, DI digital inductive, EFI, electrical accessories, engine temperature/overheating, engine, fuel primer/enrichment, fuel system, ignition system, starting system, operating requirements, test and repair equipment. 📄 Power Trim Tilt Steering Systems Components: Power Trim and Tilt Systems, Power Steering System. Maintenance Procedures: Service procedures for power trim and tilt systems. 📄 Oil Injection Systems Types: Variable-ratio electronically controlled oil injection, Variable-ratio oil injection. Models Covered Hp Ranges: 75-125hp, 135-200hp, 225 and 250hp, 200 DFI.