1983-1990 Mercury Mercruiser #6 Sterndrive Units R MR Alpha One Alpha One SS Workshop Service Repair Manual Download PDF

This manual can be used by anyone from a first time owner/amateur to a professional technician.Easy to read type,And give you all the information needed to do the procedure correctly. MODELS COVERED: TRANSOM ASSEMBLIES Model - Serial Number -- MC 120R / 140B / 185R / 488R / 898R / 228R / 260R 6216687 - 6849289 -- MC 120MR / 140MR / 170MR / 185MR / 190MR / 200MR / 230MR / 260MR / 300 Tempest MR - 6849290 - 0A471374 -- MC Alpha One / Alpha One SS - 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 / 1.32:1 - 1.50 / 1.32:1 - 0A545004 and Above 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 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 TABLE OF CONTENTS: 1 - IMPORTANT INFORMATION A - Important Information B - Maintenance C - Troubleshooting 2 - REMOVAL, INSTALLATION AND ADJUSTMENTS A - All Models 3 - STERN DRIVE 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 4 - TRANSOM ASSEMBLY A - Service Procedures Requiring Minor Disassembly B - Service Procedures Requiring Major Disassembly 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 6 - STEERING SYSTEMS A - Power Steering B - Manual Steering 7 - CORROSION PROTECTION A - All Models Keep this shop manual handy and use it often. Performing routine,preventive maintenance will save you time & money by helping to prevent premature failure and unnecessary repairs. File Format: PDF Compatible: All Versions of Windows & Mac Language: English Requirements: Adobe PDF Reader