The MerCruiser Service Repair Manual #06-R·MR·Alpha One·Alpha One SS provides comprehensive service information, detailed step-by-step repair instructions, and maintenance specifications for your MerCruiser R·MR·Alpha One· Alpha One SS Sterndrive Units. This factory service manual is designed as a "Service Guide" for the specified MerCruiser models. It offers detailed instructions, including disassembly, assembly, inspection, and adjustment procedures, enabling dealers and service mechanics to maintain the MerCruiser in optimal operating condition. The procedures are enhanced with clear photos and illustrations. This manual includes procedures for complete dismantling, repair, and assembly of boat motors, covering everything from simple repairs to complex procedures. It provides the information you need to perform repairs with confidence. The manual covers the following models: **Transom Assemblies** * MC 120R/140B/185R/488R/898R/228R/260R - Serial Numbers 6216687 - 6849289 * MC 120MR/140MR/170MR/185MR/190MR/200MR/230MR/260MR/300 Tempest MR - Serial Numbers 6849290 - 0A471374 * MC Alpha One/Alpha One SS - Serial Numbers 0A471375 and Above **Sterndrive Units** * **MC 120R-260R** * Original Ratio - Ratio If Serviced With 13:21 - Gears Serial Number * 1.98:1 - 1.94:1 - 6237861-6854392 * 1.84:1 - 1.81:1 - 6225577-6862701 * 1.65:1 - 1.62:1 - 6268065-6810537 * 1.50:1 - 1.47:1 - 6229158-6847029 * 1.32:1 - 1.29:1 - 6231571-6663947 * **MC 120 MR - 300 TEMPEST MR** * Original - Ratio Ratio - If Serviced With 13:28 - Gears Serial Number * 1.98:1 - 1.94:1 - 6854393-0A476746 * 1.84:1 - 1.81:1 - 6862702-0A470164 * 1.65:1 - 1.62:1 - 6810538-0A475786 * 1.50:1 - 1.47:1 - 6847030-0A479506 * **MC ALPHA ONE / ALPHA ONE SS** * Original Ratio - Ratio If Serviced With 13:28 - Gears R.H. Serial Number - L.H. Serial Number * 1.98:1 - 1.98:1 - 0A476747 and Above - 0C881740 and Above * 1.84:1 - 1.84:1 - 0A470165 and Above - 0C884040 and Above * 1.65:1 - 1.65:1 - 0A475787 and Above - 0C881790 and Above * 1.50:1 - 1.50:1 - 0A479507 and Above - 0C852908 and Above * 1.32:1 - 1.32:1 - 0A613927 and Above * Alpha One SS - 1.50/1.32:1 - 0A545004 and Above * 1.50:1/1.32:1 * **Sea Ray Sterndrive Units and Transom Assembly (Oyster White)** * Original Ratio - Ratio If Serviced With 13:21 - Gears Serial Number * 1.98:1 - 0B803866-0C348031 * 1.84:1 - 0B800854-0C343526 * 1.50:1 - 0B796473-0C340666 * 1.32:1 - 0B804807-0C340030 * Transom Assembly - 0B815811-0C340333 **Cross-Reference Chart for Sea Ray (Oyster White) Sterndrives:** * Sea Ray - MerCruiser * 3.0L - 3.0L Alpha One * 4.3L2 - 4.3L Alpha One * 4.3L4 - 4.3LX Alpha One * 5.7L - 5.7L Alpha One * SRX 5.7L - 350 Magnum Alpha One * SRX 7.4L - 454 Magnum Alpha One **Manual Outline:** * **Section 1 - Important Information** * A - Important Information * B - Maintenance * C - Troubleshooting * **Section 2 - Removal, Installation, and Adjustments** * A - All Models * **Section 3 - Sterndrive Unit** * A - Drive Shaft Housing * B - Gear Housing - MR/Alpha One/Alpha One SS * C - Gear Housing - I-R * D - Gear Housing - Alpha One Counter Rotation * **Section 4 - Transom Assembly** * A - Service Procedures Requiring Minor Disassembly * B - Service Procedures Requiring Major Disassembly * **Section 5 - Power Trim** * A - Oildyne Power Trim Pump (Plastic Reservoir) * B - Oildyne Power Trim Pump (Aluminum Reservoir) * C - Prestolite Power Trim Pump * D - Trim Cylinders * E - Dual Power Trim Control * F - Auto Trim II * **Section 6 - Steering Systems** * A - Power Steering * B - Manual Steering * **Section 7 - Corrosion Protection** * A - All Models

The MerCruiser Service Repair Manual #06-R·MR·Alpha One·Alpha One SS is a comprehensive guide for technicians and boat owners alike who are responsible for maintaining and repairing MerCruiser Alpha One and Alpha One SS sterndrive units. These sterndrive assemblies are integral components of recreational boats, offering a compact and efficient means of propulsion. The Alpha One and Alpha One SS sterndrive units are renowned for their durability and reliable performance, making them a popular choice for a wide range of boat applications. However, like any mechanical system, they require regular maintenance and occasional repairs to ensure optimal functionality and longevity. The MerCruiser Service Repair Manual provides the detailed technical information and step-by-step instructions necessary to perform these tasks effectively. This manual serves as a vital resource for troubleshooting and resolving common issues that may arise in Alpha One and Alpha One SS sterndrive units. It covers a broad spectrum of components, including the outdrive, transom assembly, engine interface, and related systems. The manual contains detailed diagrams, illustrations, and technical specifications, allowing users to identify components, understand their functions, and diagnose problems accurately. It also features comprehensive instructions for performing various maintenance procedures, such as oil changes, gear lubricant replacement, and impeller inspections. Moreover, the manual provides detailed guidance on executing repairs, including procedures for replacing worn-out parts, rebuilding components, and resolving complex mechanical issues. With its comprehensive coverage and practical approach, the MerCruiser Service Repair Manual #06-R·MR·Alpha One·Alpha One SS empowers technicians and boat owners to confidently address maintenance and repair needs, ensuring the smooth operation and extended lifespan of these essential sterndrive units.