🏷️ Basic Information Identification Make: Mercury Mariner Model: Outboard Year: 1990-2000 Generation: N/A 📋 Manual Details Availability Manual Type: Workshop Service Repair Manual Delivery Method: Instant Download Language Language: English Format Format: PDF Compatibility Operating Systems: All Versions of Windows & Mac Requirements Software Requirement: Adobe PDF Reader Features Printability: All pages are printable Content Glossary Included: Yes Master Index Included: Yes ⚙️ Engine Specifications General Engine Type: 2-Stroke Power Range Min Horsepower: 2.5hp Max Horsepower: 275hp Cylinder Configuration Configurations: 1-cylinder, 2-cylinder, 3-cylinder, 4-cylinder, V6 Displacement Range Minimum Displacement Indicated: N/A (Specific displacement not provided for all models) Maximum Displacement Indicated: N/A (Specific displacement not provided for all models) Model Variations Specific Models Covered: 2.5hp, 3hp, 3.3hp, 4hp, 5hp, 6hp, 8hp, 9.9hp, 15hp, 20hp, 25hp, 30hp, 40hp (multiple variants), 50hp, 60hp, 75hp, 90hp, 100hp, 115hp, 125hp, 135hp (including Optimax), 150hp (including EFI and Optimax), 175hp (including EFI), 200hp (including EFI and Optimax), 225hp (including EFI and Optimax), 250hp EFI, 275hp, XR6 Classic (150) Fuel And Ignition Fuel System Coverage: Yes Ignition System Coverage: Yes Cooling System Cooling System Coverage: Yes Lubrication System Lubrication System Coverage: Yes Performance Enhancements Optimax Coverage: Yes (for specific models) Efi Coverage: Yes (for specific models) 🔧 Transmission Type Transmission Type: N/A (Outboard lower unit operation) Gears Gear Ratios: N/A (Covered in manual, but not listed as a general attribute) 📐 Dimensions Overall Length: N/A (Varies by model) Width: N/A (Varies by model) Height: N/A (Varies by model) Weight: N/A (Varies by model) 🔧 Maintenance Routine Covered Maintenance: General Information and Boating Safety, Tools and Equipment, Maintenance, Fuel System, Ignition and Electrical Systems, Lubrication and Cooling, Powerhead, Lower Unit, Trim and Tilt, Remote Control, Hand Rewind Starter Service Information Type: High-quality diagrams and instructions Target Audience: Do-It-Yourselfers