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1983-1990 Mercruiser No. 6 Sterndrive Units R, MR, Alpha One, Alpha One SS service manual Preview image 1
1983-1990 Mercruiser No. 6 Sterndrive Units R, MR, Alpha One, Alpha One SS service manual Preview image 2
1983-1990 Mercruiser No. 6 Sterndrive Units R, MR, Alpha One, Alpha One SS service manual Preview image 3
1983-1990 Mercruiser No. 6 Sterndrive Units R, MR, Alpha One, Alpha One SS service manual Preview image 4
1983-1990 Mercruiser No. 6 Sterndrive Units R, MR, Alpha One, Alpha One SS service manual Preview image 5
1983-1990 Mercruiser No. 6 Sterndrive Units R, MR, Alpha One, Alpha One SS service manual Preview image 6

1983-1990 Mercruiser No. 6 Sterndrive Units R, MR, Alpha One, Alpha One SS service manual

Models covered in this manual:

1983

  • R
  • MR
  • Alpha One
  • Alpha One SS

1984

  • R
  • MR
  • Alpha One
  • Alpha One SS

1985

  • R
  • MR
  • Alpha One
  • Alpha One SS

1986

  • R
  • MR
  • Alpha One
  • Alpha One SS

1987

  • R
  • MR
  • Alpha One
  • Alpha One SS

1988

  • R
  • MR
  • Alpha One
  • Alpha One SS

1989

  • R
  • MR
  • Alpha One
  • Alpha One SS

1990

  • R
  • MR
  • Alpha One
  • Alpha One SS
  • 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 MC 120R-260R
  • 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
  • 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
  • 1.98:1 - 0B803866-0C348031
  • 1.84:1 - 0B800854-0C343526
  • 1.50:1 - 0B796473-0C340666
  • 1.32:1 - 0B804807-0C340030
  • 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

Production/model years: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990.

File specifications

File size: 18.35 MB
File type: PDF
Language: English
Pages: 566

Printable: Yes
Estimated download time: 0.38 Minutes
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Product Information

Table of Contents

General Information

  • Specifications
  • Torque Specifications
  • Unit Conversion Table
  • List of Abbreviations

Removal and Installation

  • Safety Precautions
  • Required Tools
  • Removal Procedure
  • Installation Procedure

Transom Assemblies

  • Transom Assembly Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Drive Shaft Housing

  • Drive Shaft Housing Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Lower Unit

  • Lower Unit Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Gear Housing

  • Gear Housing Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Water Pump

  • Water Pump Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

U-Joint and Input Shaft

  • U-Joint Components
  • Input Shaft Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Propeller Shaft

  • Propeller Shaft Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Hydraulic Systems

  • Hydraulic System Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Electrical Systems

  • Electrical System Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Steering Systems

  • Steering System Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Trim and Tilt Systems

  • Trim and Tilt System Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Cooling Systems

  • Cooling System Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Fuel Systems

  • Fuel System Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Lubrication Systems

  • Lubrication System Components
  • Inspection and Repair
  • Assembly and Disassembly Procedures

Specifications and Troubleshooting

  • General Specifications
  • Troubleshooting Guide
  • Common Issues and Solutions
  • Special Tools

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