Mercury Mercruiser Sterndrive 4.3L MPI Alpha and Bravo Factory Service Repair Manual + Wirings

Mercury Mercruiser Sterndrive 4.3L MPI Alpha and Bravo Factory Service Repair Manual + Wirings

Loaded with illustrations, instructions, photos, and diagrams, complete to service and repair your Mercury. 

510  Pages

MODELS COVER:

STERNDRIVE (MCM)

4.3L MPI Alpha and Bravo      Serial.: 0M300000 and Above

MANUAL COVERS:

Section 1 – Important Information

A – General Information

B – Maintenance

C – Troubleshooting

Section 2 – Removal and Installation

A – MCM Models

Section 3 – Engine Mechanical

A – 4.3 liter (262 cid)

Section 4 – Electrical System

A – Starting System

B – Ignition System

C – Charging System

D – Wiring Diagrams

Section 5 – Fuel System

A – Fuel Delivery System

Section 6 – Cooling System

A – All Models

B – Seawater Cooled Models

C – Closed Cooled Models

Section 7 – Exhaust System

A – Manifolds and Elbows

Section 8 – Power Steering

A – Power Steering Pump

This manual is the same as the manual used by workshops. Service Manual contains detailed instructions and step by step diagrams for all workshop procedures.

 Language: English 
Format: PDF

COMPATIBLE WITH ALL WINDOWS & MAC COMPUTERS 
(WINDOWS 11, WINDOWS 10, WINDOWS 8 ETC.) 

Windows/Mac/Tablet/Phone Friendly

• Engine Type: V6.
• Displacement: 4.3L (262 cubic inches).
• Performance: The 4.3L MPI engine typically produces 220 hp (propshaft) and 225 hp (flywheel). This is a performance increase of about 15% over earlier carbureted models.
• Features:
  • Multi-Port Injection: This fuel system uses an injector for each cylinder, providing more precise fuel delivery than earlier Electronic Fuel Injection (EFI) or carbureted versions.
  • Engine Guardian System: An early diagnostic system that monitors critical engine parameters and can reduce power to prevent damage.
  • SmartCraft: Compatible with Mercury’s SmartCraft system, allowing for integrated engine diagnostics and information on newer models. 

• Ideal for: Lighter boats, such as small runabouts, sport boats, and pontoons.
• Drive Details: The
  Alpha One Gen I

  and Gen II drives are both suitable, with the Gen II having a few enhancements.

• Pros:
  • Lighter and more fuel-efficient.
  • Cost-effective for smaller vessels.
• Cons:
  • Less durable than a Bravo drive, making it unsuitable for heavier boats or twin-engine setups. 

• Ideal for: Larger cruisers, pontoons, and heavier vessels.
• Drive Details: The 4.3L MPI engine can be paired with 
  Bravo Two

   or Bravo Three drives. The Bravo Three, with its counter-rotating dual props, provides exceptional handling.

• Pros:
  • More durable and better suited for heavier loads.
  • The 
    Bravo Three

     provides superior handling and tracking.

• Cons:
  • Heavier and more expensive than an Alpha drive.
  • May not be necessary for smaller, lighter boats.