🏷️ Basic Information Identification Make: Mercury Mariner Model: Outboard 250 EFI 3.0 Marathon Year: Unknown Generation: Marathon 📋 Manual Details Document Properties Manual Type: Service Repair Manual Language: English Format: PDF / WINRAR Delivery Method: Instant Download Features: Completely bookmarked, searchable Source: Factory Service Manual ⚙️ Engine Specifications General Engine Type: V6 Outboard Displacement: 3.0 Liters Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Lubrication Oil System: Oil Injection Performance Power: 250 HP Emissions Emissions Control: Covered in manual Assembly Powerhead Description: Covered in manual Mid Section Description: Covered in manual Drive Shaft Housing Description: Covered in manual Trim System Power Trim Description: Covered in manual 🔧 Transmission Drive System Gear Housing Type: Right Hand Ratcheting / Left Hand Ratcheting 🔧 Maintenance Scheduled Maintenance Maintenance Topics: Specifications, Maintenance, General Information, Outboard Installation, Electrical, Ignition, Charging & Starting System, Timing, Synchronizing & Adjusting, Wiring Diagrams, Fuel System, Fuel Pump, Fuel Injection, Oil Injection, Emissions, Powerhead, Mid-Section, Clamp/Swivel Brackets & Drive Shaft Housing, Power Trim, Gear Housing, Right Hand Ratcheting, Left Hand Ratcheting, Attachments/Control Linkage 📄 Compatibility Software Operating Systems: Win95/98/ME/XP/vista/7/Linux/MAC 📄 Document Features Printing Printable: Yes Searchability Searchable: Yes 📄 Support Assistance Customer Support: Email support available 📄 Payment Accepted Methods Payment Options: Major Credit/Debit Cards, PayPal