Mercury MerCruiser MCM 4.3L ALPHA User Manual

1
B
MAINTENANCESERVICE MANUAL NUMBER 25
90-861328--1 NOVEMBER 1999 Page 1B-1
IMPORTANT INFORMATION
Section 1B - Maintenance
Table of Contents
Tools 1B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants / Sealants / Adhesives 1B-2. . . . .
Maintenance Schedules 1B-3. . . . . . . . . . . . . .
Maintenance Intervals 1B-3. . . . . . . . . . . . .
Gas Sterndrive 1B-3. . . . . . . . . . . . . . . . . . . . . .
Routine Maintenance * 1B-3. . . . . . . . . . . .
Scheduled Maintenance * 1B-4. . . . . . . . . .
Engine and Tune-Up Specifications 1B-5. . . .
MCM (Sterndrive) 1B-5. . . . . . . . . . . . . . . . .
Fluid Capacities 1B-6. . . . . . . . . . . . . . . . . . . . .
Sterndrive Engines 1B-6. . . . . . . . . . . . . . .
Sterndrives 1B-6. . . . . . . . . . . . . . . . . . . . . .
20-Hour Break-In Period 1B-7. . . . . . . . . . . . .
After Break-in Period 1B-7. . . . . . . . . . . . . . . .
End of First Season Checkup 1B-7. . . . . . . . .
Specifications 1B-8. . . . . . . . . . . . . . . . . . . . . . .
Fuel Recommendations 1B-8. . . . . . . . . . .
Test For Alcohol Content In Gasoline 1B-10
Power Steering Fluid 1B-10. . . . . . . . . . . . . . . .
Coolant for Closed Cooling System 1B-10. . . .
Crankcase Oil 1B-11. . . . . . . . . . . . . . . . . . . . . .
Overfilled Crankcase Oil 1B-11. . . . . . . . . . .
Checking Engine Oil Level / Filling 1B-12. .
Changing Oil and Filter 1B-12. . . . . . . . . . . . . . .
Changing Water Separating Fuel Filter 1B-13.
Power Steering System 1B-15. . . . . . . . . . . . . .
Checking Fluid Level 1B-15. . . . . . . . . . . . . .
Engine Cold 1B-15. . . . . . . . . . . . . . . . . . . . .
Filling and Bleeding 1B-16. . . . . . . . . . . . . . .
Closed Cooling System 1B-17. . . . . . . . . . . . . .
Checking Coolant Level 1B-17. . . . . . . . . . .
Flushing System 1B-18. . . . . . . . . . . . . . . . . .
Lubrication 1B-20. . . . . . . . . . . . . . . . . . . . . . . . .
Throttle Cable 1B-20. . . . . . . . . . . . . . . . . . . .
Shift Cable 1B-20. . . . . . . . . . . . . . . . . . . . . . .
Engine Coupler /
U-Joint Shaft Splines 1B-21. . . . . . . . . . . . .
Sterndrive Drive
Shaft Extension Models 1B-22. . . . . . . . . . .
Cleaning Flame Arrestor 1B-22. . . . . . . . . . . . .
Top Mounted Flame Arrestor 1B-23. . . . . . .
Serpentine Drive Belt 1B-23. . . . . . . . . . . . . . . .
Component Location 1B-23. . . . . . . . . . . . . .
Serpentine Belt Routing 1B-24. . . . . . . . . . . . . .
S/N 0L619083 and Below 1B-24. . . . . . . . . .
S/N 0L619084 and Above 1B-25. . . . . . . . .
Inspection 1B-26. . . . . . . . . . . . . . . . . . . . . . .
Replacing and/or Adjusting Tension 1B-26.
Ignition Timing 1B-27. . . . . . . . . . . . . . . . . . . . . .
Thunderbolt V Models 1B-27. . . . . . . . . . . . .
EFI 1B-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cold Weather or Extended Storage 1B-29. . . .
Precautions 1B-29. . . . . . . . . . . . . . . . . . . . . .
Power Package Layup 1B-31. . . . . . . . . . . .
Draining Instructions 1B-33. . . . . . . . . . . . . .
Draining Sterndrive 1B-38. . . . . . . . . . . . . . .
Recommissioning 1B-39. . . . . . . . . . . . . . . . .

Mercury MerCruiser MCM 4.3L ALPHA Specifications

General

Brand	Mercury
Model	MerCruiser MCM 4.3L ALPHA
Category	Engine
Language	English

Summary

Maintenance Schedules

Gas Sterndrive Routine Maintenance

Details routine maintenance tasks for gas sterndrives, categorized by frequency.

Gas Sterndrive Scheduled Maintenance

Outlines scheduled maintenance tasks for gas sterndrives based on time or hours.

Engine and Tune-Up Specifications

MCM (Sterndrive) Specifications

Provides detailed technical specifications for MCM sterndrive models.

Engine Operation and Break-In

20-Hour Break-In Period

Outlines critical rules for the initial 20-hour engine break-in period for optimal performance.

Fuel System Information

Fuel Recommendations

Details acceptable gasoline types, octane ratings, and warnings about alcohol content.

Gasolines Containing Alcohol Effects

Crankcase Oil Service

Crankcase Oil Selection and Viscosity

Recommends specific oil types and viscosity grades for engine lubrication.

Checking Engine Oil Level / Filling

Changing Oil and Filter

Fuel Filter Maintenance

Changing Water Separating Fuel Filter

Power Steering System Service

Checking Fluid Level

Filling and Bleeding Power Steering System

Serpentine Drive Belt Service

Component Location and Belt Routing

Inspecting and Adjusting Drive Belt Tension

Ignition Timing Adjustment

Ignition Timing - Thunderbolt V Models

Step-by-step guide for checking and adjusting ignition timing on Thunderbolt V models.

Ignition Timing - EFI Models

Procedures for checking and adjusting ignition timing on EFI models.

Storage and Winterization Procedures

Cold Weather and Storage Precautions

Safety precautions and warnings related to cold weather and extended storage.

Power Package Layup Procedure

Comprehensive steps for preparing the power package for storage.

Cooling System Draining

Draining Seawater (Raw-Water) Cooled Models

Instructions for draining the raw-water cooling system to prevent freeze damage.

Draining Seawater Section of Closed Cooled Models

Procedures for draining the seawater section of closed-cooled systems.

Sterndrive Draining

Draining Sterndrive Components

Recommissioning Engine

Recommissioning Steps