Mercury Mercruiser Marine Engines GM V6 262 CID (4.3L) 1998- Factory Service Repair Manual + Wirings
Loaded with illustrations, instructions, photos, and diagrams, complete to service and repair your Mercury.
790 Pages
MODEL YEAR:
1998-
MODELS COVER:
GM V6 –
262 CID (4.3L) SN: 0L125850 –
262 CID (4.3H) SN: 0L110850 –
262 CID (4.3L EFI) SN 0L110850 – 0M299999
MANUAL COVERS:
Section 1 – Important Information
A – General Information
B – Maintenance
C – Troubleshooting
Section 2 – Removal and Installation
A – MCM Models
Section 3 – Engine
A – 262 CID 4.3L Engines
Section 4 – Electrical Systems
A – Starting System
B – Ignition System
C – Charging System
D – Instrumentation
E – Wiring Diagrams
Section 5 – Fuel Systems
A – Fuel Delivery System For Carbureted Engines
B – Mercarb 2 Barrel Carburetor
C – Weber 4 Barrel Carburetor
D – SAV1 Emission Fuel System With Weber Carburetor
E – Fuel Delivery System For Electronic Fuel Injection
F – Fuel Injection Descriptions And System Operation
G – Fuel Injection Disassembly And Reassembly
H – Fuel Injection System Troubleshooting
I – Diagnostics
Section 6 – Cooling System
A – Seawater Cooled Models
B – Closed Cooled Models
Section 7 – Exhaust System
A – General
B – Manifold, Elbows, Risers
C – Collectors
Section 8 – Drives
A – Drive Shaft Models
Section 9 – Power Steering
A – 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
- 1998–2015: MerCruiser used the GM 4.3L Vortec V6 engine, which featured an 8-bolt intake manifold, a roller camshaft and lifters, and a one-piece rear main seal.
- Horsepower: Horsepower ratings varied with the fuel system and year, but models from this era produced around 190–225 hp.
- Fuel system: Multiple options were available:
- Carbureted (2 BBL): Found on earlier models, using a standard two-barrel carburetor.
- MPI (Multi-Port Injection): Offered from 1998 onwards, MPI provided more precise fuel delivery, leading to better performance and efficiency.
- TKS (Turn Key Start): This carbureted system simplified starting by eliminating the need for a choke, especially on earlier models.
- 2016 onward: The 4.3L MPI engine was updated to offer higher performance and improved efficiency.
- Horsepower: Later MPI models were rated at up to 250 hp.
- Features: In 2016, MerCruiser introduced a more modern, compact 4.5L V6 engine, but the 4.3L MPI continued to be offered for some time.
- Alpha One Gen II: This drive is the standard pairing for the 4.3L engine, especially on runabouts and small cruisers. It is rated for gas engines up to 300 hp.
- Bravo: For heavier vessels like larger runabouts or cruisers, a heavier-duty Bravo sterndrive (typically a Bravo Two or Bravo Three) is used. The Bravo drive offers a larger gearcase and counter-rotating dual propellers (on the Bravo Three) for better thrust and handling.
- Sport boats and runabouts: Small and mid-sized boats like a Bayliner 195 or Sea Ray 210 Sundeck are often powered by a 4.3L engine with an Alpha drive.
- Cruisers: Larger cruisers and houseboats typically use a 4.3L with a Bravo Two or Bravo Three drive for the added thrust and strength needed to move the heavier hull.
- Twin-engine setups: Twin 4.3L MPI engines can be used in larger vessels, providing excellent power and a relatively lighter engine package compared to bigger V8s



