🏷️ Basic Information Identification Make: Mercury Mercruiser Model: TR/TRS Stern Drive Units Year: 1978-1993 Generation: Number 5 Stern Drive Units 📋 Manual Details Manual Information Manual Type: Service Repair Workshop Manual Language: English File Format Format: PDF Compatibility Compatibility: All Versions of Windows & Mac Requirements Software Requirements: Adobe PDF Reader, WinZip Features Printable: All pages are printable Download Type: Instant Download Content Quality Completeness: 100% complete and intact Detail Level: Detailed illustrations, step-by-step instructions, hundreds of photos ⚙️ Engine Specifications General Engine Type: Marine Stern Drive (Internal Combustion Engine not specified in manual) Manufacturer Recommendation: Designed for do-it-yourself-er and experienced mechanic 🔧 Transmission Drive Unit Drive Type: Stern Drive Rotation Options: Left Hand Rotation, Right Hand Rotation Components Gear Housing: Covered in manual Drive Shaft Housing: Covered in manual 🔧 Maintenance General Maintenance Section Coverage: Yes Cleaning Inspection Cleaning Inspection Coverage: Basic Cleaning and Inspection Layup Recommissioning Layup Recommissioning Coverage: Power Package Layup and Recommissioning Propellers Propeller Coverage: Propellers 📄 Troubleshooting General Troubleshooting Coverage: Yes 📄 Steering Systems Power Steering Power Steering Coverage: Yes 📄 Power Trim General Power Trim Coverage: Yes Pump Types Oildyne Pump Coverage: Oildyne Power Trim Pump Prestolite Low Pressure Pump Coverage: Prestolite Low Pressure Power Trim Pump Prestolite High Pressure Pump Coverage: Prestolite High Pressure Power Trim Pump Components Trim Cylinders Coverage: Trim Cylinders Control Dual Power Trim Control Coverage: Dual Power Trim Control 📄 Models Covered Transom Assembly Transom Assembly Power Steering: MCM TR/TRS TRANSOM ASSEMBLY WITH POWER STEERING (Serial Number 4922510 and above) Transom Assembly No Power Steering: MCM TR/TRS TRANSOM ASSEMBLY WITHOUT POWER STEERING (Serial Number 4922285 and above) Stern Drive Stern Drive Tr Lh Rotation: MCM TR STERN DRIVE - Left Hand Rotation (Serial Number 5009867 and above) Stern Drive Tr Rh Rotation: MCM TR STERN DRIVE - Right Hand Rotation (Serial Number 5010092 and above) Stern Drive Trs Lh Rotation: MCM TRS STERN DRIVE - Left Hand Rotation (Serial Number 4895290 and above) Stern Drive Trs Rh Rotation: MCM TRS STERN DRIVE - Right Hand Rotation (Serial Number 4895730 and above)