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

This manual can be used by anyone from a first time owner/amateur to a professional https://www.tradebit.comy 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

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