This highly detailed repair manual covers all repairs and servicing. All technical details taken directly from the manufacturer can be found in this manual, It is the factory manual from the manufacturer. 1983-1990 Mercury Mercruiser Marine Engines Number 6 Stern Drive Units R, MR, Alpha One, Alpha One SS service repair manual is the same manual used by professional technicians, mechanics and workshops around the world.
1983-1990 Mercury Mercruiser Marine Engines Number 6 Stern Drive Units R, MR, Alpha One, Alpha One SS service repair manual has easy to read text sections with top quality diagrams and instructions, will guide you through fundamentals of maintaining and repairing, step-by-step, to teach you what the factory trained technicians already know by heart. For that reason, you will not find it difficult to repair or to maintain some of the innovative features loaded on the vehicle when you have the manual. Using this repair manual is the true way to keep your vehicle working properly.
Model And Serial Number:
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
Service Repair Manual Covers:
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
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
More Theres——–
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** Total Pages: 566
** File Format: PDF
** Language: English
** Requirements: Adobe PDF Reader & WinZip
** Compatible: All Versions of Windows & Mac, Linux OS, Iphone, Ipad, Android etc…
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