🏷️ Basic Information Identification Make: Mercury Mercruiser Model: GM V-6 Cylinder Marine Engines Year: 1983-1993 Generation: Service Manual Download PDF 📋 Manual Details Documentation Manual Type: Service Repair Workshop Manual Language: English Format: PDF Download Compatibility: All PC based Windows operating system and Mac Printable: All pages are printable Requirements Software Requirements: Adobe PDF Reader, WinZip ⚙️ Engine Specifications Engine Variations Engine Type: GM V-6 Cylinder Displacement 1: 229 CID (3.8L) Displacement 2: 262 CID (4.3L) Power Output 1: 175 HP (MCM 175) Power Output 2: 185 HP (MCM 185) Power Output 3: 205 HP (MCM 205) Carburetion Carburetor Types: 2 BBL Mercarb, 4 BBL Rochester, 4 BBL Weber Cooling System Cooling Systems Covered: Standard Cooling, Closed Cooling Electrical System Electrical Systems Covered: Starting System, Ignition System, Charging Systems, Instrumentation, Wiring Diagrams Fuel System Fuel Systems Covered: Fuel Delivery, Fuel Pump Engine Mechanical Mechanical Sections Covered: Engine Mechanical (229 CID 3.8 Liter), Engine Mechanical (262 CID 4.3 Liter) 🔧 Maintenance General Servicing Maintenance Topics: Maintenance & Servicing Troubleshooting Troubleshooting Coverage: Troubleshooting 📄 Models And Serial Numbers Model List Mcm 185R: 229 CID (3.8L) | Serial Numbers: 6289593 to 6919655 Mcm 185Mr: 262 CID (4.3L) | Serial Numbers: 6919656 to 0A483580 Mcm 185 Alpha I: Serial Numbers: 0A483581 to 0B455459 Mcm 175 Alpha I: Serial Numbers: 0B455460 to 0B773242 Mcm 4.3 Litre Alpha I: Serial Numbers: 0B773243 to 0F000000 Sea Ray (Note 1) 4.3L-2 Alpha I: Serial Numbers: 0B785483 to B921276 Mcm 205Mr: Serial Numbers: 6919687 to 0A483776 Mcm 205 Alpha I: Serial Numbers: 0A48377 to 0B775129 Mcm 4.3 Litre Lx Alpha I: Serial Numbers: 0B775130 to 0F000000 Sea Ray (Note 1) 4.3L-4 Alpha I: Serial Numbers: 0B785981 to B922330 Notes Note 1: Sea Ray to MerCruiser cross references: 4.3L-2 same as MCM 4.3 Litre, 4.3L-4 same as MCM 4.3 Litre LX