Mercruiser

MerCruiser Stern Drive Units R MR Alpha One Alpha One SS #6 Service Repair Manual-Improved

Name: MerCruiser Stern Drive Units R MR Alpha One Alpha One SS #6 Service Repair Manual-Improved
Brand: Mercruiser
SKU: 298498
Price: 16.99 USD
Availability: InStock

$16.99

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Vehicle data plateRef 298498

Brand: Mercruiser
Vehicle: Tractors
Models covered: 2 65, Agriculture, Alpha, Alpha One, Alpha One SS, MR, R, White
Format: PDF, searchable, print-ready
Delivery: Instant download after checkout
Language: English

What happens after you pay

Download link opens on the order page immediately
The same link is emailed to you — re-download any time
Open on phone, tablet or PC; print only the pages you need
Not sure it covers your model year? Ask us before you buy

🏷️ Basic Information

Identification

Manufacturer:

MerCruiser

Product Category:

Stern Drive Units and Transom Assemblies

📋 Manual Details

Document Properties

Manual Type:

Service Repair Manual

Language:

English

Page Count:

566

Format:

PDF

Features:

• Bookmarks

• Searchable Text

• Improved Quality

• Indexed

• Table of Contents

Compatibility

Compatible Os:

• Windows

• Mac

Content Sections

Sections Included:

• Important Information (Information, Maintenance, Troubleshooting)

• Removal, Installation and Adjustments (All Models)

• Stern Drive Unit (Drive Shaft Housing, Gear Housing - MR / Alpha One / Alpha One SS, Gear Housing - I-R, Gear Housing - Alpha One Counter Rotation)

• Transom Assembly (Service Procedures Requiring Minor Disassembly, Service Procedures Requiring Major Disassembly)

• Power Trim (Oildyne Power Trim Pump (Plastic Reservoir), Oildyne Power Trim Pump (Aluminum Reservoir), Prestolite Power Trim Pump, Trim Cylinders, Dual Power Trim Control, Auto Trim II)

• Steering Systems (Power Steering, Manual Steering)

• Corrosion Protection (All Models)

🔧 Maintenance

Maintenance Tasks

Covered Maintenance Areas:

• Tune-ups

• Regular Maintenance

• Repairs

📄 Specifications

Device Type

Device Type:

Marine Stern Drive and Transom Assembly

Intended Use

Intended Use:

Maintenance and Service

Coverage

Models Covered:

• MerCruiser R

• MerCruiser MR

• MerCruiser Alpha One

• MerCruiser Alpha One SS

• MerCruiser #6 (06)

Transom Assembly Models:

• 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 Number 0A471375 and Above)

Sterndrive Ratios Mc 120R 260R

Sterndrive Ratios:

• {'model': 'MC 120R-260R', 'original_ratio': '1.98:1', 'ratio_if_serviced_with_13:21': '1.94:1', 'gears_serial_number_range': '6237861-6854392'}

• {'model': 'MC 120R-260R', 'original_ratio': '1.84:1', 'ratio_if_serviced_with_13:21': '1.81:1', 'gears_serial_number_range': '6225577-6862701'}

• {'model': 'MC 120R-260R', 'original_ratio': '1.65:1', 'ratio_if_serviced_with_13:21': '1.62:1', 'gears_serial_number_range': '6268065-6810537'}

• {'model': 'MC 120R-260R', 'original_ratio': '1.50:1', 'ratio_if_serviced_with_13:21': '1.47:1', 'gears_serial_number_range': '6229158-6847029'}

• {'model': 'MC 120R-260R', 'original_ratio': '1.32:1', 'ratio_if_serviced_with_13:21': '1.29:1', 'gears_serial_number_range': '6231571-6663947'}

Sterndrive Ratios Mc 120Mr 300 Tempest Mr

Sterndrive Ratios:

• {'model': 'MC 120 MR - 300 TEMPEST MR', 'original_ratio': '1.98:1', 'ratio_if_serviced_with_13:28': '1.94:1', 'gears_serial_number_range': '6854393-0A476746'}

• {'model': 'MC 120 MR - 300 TEMPEST MR', 'original_ratio': '1.84:1', 'ratio_if_serviced_with_13:28': '1.81:1', 'gears_serial_number_range': '6862702-0A470164'}

• {'model': 'MC 120 MR - 300 TEMPEST MR', 'original_ratio': '1.65:1', 'ratio_if_serviced_with_13:28': '1.62:1', 'gears_serial_number_range': '6810538-0A475786'}

• {'model': 'MC 120 MR - 300 TEMPEST MR', 'original_ratio': '1.50:1', 'ratio_if_serviced_with_13:28': '1.47:1', 'gears_serial_number_range': '6847030-0A479506'}

Sterndrive Ratios Mc Alpha One Alpha One Ss

Sterndrive Ratios:

• {'model': 'MC ALPHA ONE / ALPHA ONE SS', 'original_ratio': '1.98:1', 'ratio_if_serviced_with_13:28': '1.98:1', 'gears_serial_number_rh': '0A476747 and Above', 'gears_serial_number_lh': '0C881740 and Above'}

• {'model': 'MC ALPHA ONE / ALPHA ONE SS', 'original_ratio': '1.84:1', 'ratio_if_serviced_with_13:28': '1.84:1', 'gears_serial_number_rh': '0A470165 and Above', 'gears_serial_number_lh': '0C884040 and Above'}

• {'model': 'MC ALPHA ONE / ALPHA ONE SS', 'original_ratio': '1.65:1', 'ratio_if_serviced_with_13:28': '1.65:1', 'gears_serial_number_rh': '0A475787 and Above', 'gears_serial_number_lh': '0C881790 and Above'}

• {'model': 'MC ALPHA ONE / ALPHA ONE SS', 'original_ratio': '1.50:1', 'ratio_if_serviced_with_13:28': '1.50:1', 'gears_serial_number_rh': '0A479507 and Above', 'gears_serial_number_lh': '0C852908 and Above'}

• {'model': 'MC ALPHA ONE / ALPHA ONE SS', 'original_ratio': '1.32:1', 'ratio_if_serviced_with_13:28': '1.32:1', 'gears_serial_number_rh': '0A613927 and Above', 'gears_serial_number_lh': None}

• {'model': 'Alpha One SS', 'original_ratio': '1.50:1', 'ratio_if_serviced_with_13:28': '1.50:1', 'gears_serial_number_rh': '0A545004 and Above', 'gears_serial_number_lh': None}

• {'model': 'Alpha One SS', 'original_ratio': '1.32:1', 'ratio_if_serviced_with_13:28': '1.32:1', 'gears_serial_number_rh': '0A545004 and Above', 'gears_serial_number_lh': None}

Sea Ray Sterndrive Units Transom Assembly Oyster White

Sea Ray Sterndrive Ratios:

• {'model': 'Sea Ray (Oyster White) Sterndrive', 'original_ratio': '1.98:1', 'ratio_if_serviced_with_13:21': None, 'gears_serial_number_range': '0B803866-0C348031'}

• {'model': 'Sea Ray (Oyster White) Sterndrive', 'original_ratio': '1.84:1', 'ratio_if_serviced_with_13:21': None, 'gears_serial_number_range': '0B800854-0C343526'}

• {'model': 'Sea Ray (Oyster White) Sterndrive', 'original_ratio': '1.50:1', 'ratio_if_serviced_with_13:21': None, 'gears_serial_number_range': '0B796473-0C340666'}

• {'model': 'Sea Ray (Oyster White) Sterndrive', 'original_ratio': '1.32:1', 'ratio_if_serviced_with_13:21': None, 'gears_serial_number_range': '0B804807-0C340030'}

• {'model': 'Sea Ray (Oyster White) Transom Assembly', 'serial_number_range': '0B815811-0C340333'}

Sea Ray Mercruiser Cross Reference

Sea Ray To Mercruiser Cross Reference:

• {'sea_ray_model': '3.0L', 'mercruiser_equivalent': '3.0L Alpha One'}

• {'sea_ray_model': '4.3L2', 'mercruiser_equivalent': '4.3L Alpha One'}

• {'sea_ray_model': '4.3L4', 'mercruiser_equivalent': '4.3LX Alpha One'}

• {'sea_ray_model': '5.7L', 'mercruiser_equivalent': '5.7L Alpha One'}

• {'sea_ray_model': 'SRX 5.7L', 'mercruiser_equivalent': '350 Magnum Alpha One'}

• {'sea_ray_model': 'SRX 7.4L', 'mercruiser_equivalent': '454 Magnum Alpha One'}

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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MerCruiser Stern Drive Units R MR Alpha One Alpha One SS #6 Service Repair Manual-Improved