🏷️ Basic Information Identification Make: MerCruiser Product Name: MerCruiser Manual Stern Drive Units MCM 120 to 260 Model Years: 1978-1982 Generation: N/A (specific to the listed models and years) 📋 Manual Details Publication Manual Type: Service and Repair Manual Language: English Format: PDF (Instant Download) Coverage Covered Transom Assemblies: • MCM 120 • MCM 140 • MCM 165 • MCM 470 • MCM 485 • MCM 898 • MCM 228 • MCM 260 Covered Stern Drive Units: MC 120 to 260 Features Content Focus: Inspection, service, overhaul of main components, step-by-step procedures, illustrations, diagrams, troubleshooting, specifications ⚙️ Engine Specifications General Engine Type: Inboard (used in conjunction with stern drive) Power Output Power Range Hp: 120 to 260 Engine Family Example Engine Block: Likely Ford-based for MCM 140/165/228/260, and potentially inline-4 for MCM 470 🔧 Transmission Gear Ratio Available Ratios: • 1.98:1 • 1.84:1 • 1.65:1 • 1.50:1 Stern Drive Unit Drive Type: Stern Drive 🔧 Maintenance Service Information Target Audience: Technicians with basic knowledge and skills in marine engines and stern drives, apprentice mechanics, DIY mechanics Guidance Safety Precaution Emphasis: Strong emphasis on safety, use of manual for all work, potential for injury with improper repair Information Scope Of Information: Specific to covered models and years, general knowledge not included, refer to other sections for basic info Updates Modification Disclaimer: Manual reflects information at time of publication; modifications may cause discrepancies Tools Equipment Tool Requirement Note: Proper tools and equipment may be necessary for successful service by DIY mechanics 📄 Sales Info Availability Delivery Method: Instant Download Access Long Term Access: Permanent access after download Compatibility Software Requirements: None (standard PDF reader) Safety Download Safety: 100% safe