1993-1999 MerCruiser 4.3L (262 CID) Service Manual

Comprehensive MerCruiser 4.3L service manual covering Alpha and Bravo models. Includes detailed diagrams and step-by-step repair procedures. Part No. 90-823226-1.

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Mercruiser Models Covered & Key Technical Specifications

Models: MCM 4.3L Alpha, MCM 4.3LX Alpha, MCM 4.3LX Gen+ Alpha, MCM 4.3LXH Gen+ Alpha, MCM 262 Magnum EFI Gen+ Alpha, MCM 4.3LX Bravo, MCM 4.3LX Gen+ Bravo, MCM 4.3LXH Gen+ Bravo, MCM 262 Magnum EFI Gen+ Bravo
Sub-models / Variants: Alpha Drive, Bravo Drive, Gen+, Gen+ Alpha, Gen+ Bravo
Build Years: 1993–1999
Serial Numbers: OF000615 and Above
Technical Data:

  • Engine Displacement: 262 CID (4.3 Liters)
  • Compression Ratio: 9.05:1 (Gen+: 9.4:1)
  • Firing Order: 1-6-5-4-3-2
  • Cylinder Head Bolt Torque: 65 ft-lbs (88 Nm) (Gen+: 22 ft-lbs initial sequence + angle torque)
  • Oil Pressure at 2000 RPM: 30–55 PSI (207–379 kPa)
  • Spark Plug Gap: .040 in (1.0 mm)
  • Timing Chain Deflection: 3/8 in (10 mm) from taut position
Technical Specifications
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Document Number / Seller:
29297 / George Taylor
File Size:
11.66 MB
File Type:
PDF
Language:
English
Pages:
643
Printable:
Yes
Category:
Inboard-Engines-Sterndrives
Last updated / verified
Jun 11, 2026

Mercruiser Manual Features & Content Preview

MerCruiser 4.3L (262 CID) Marine Engine Service Manual

  • Covers 1993–1999 MerCruiser MCM 4.3L Alpha and Bravo sterndrive models, including Gen+ and Gen+ Alpha/Bravo variants
  • Official Mercury Marine publication P/N 90-823226-1, published 1996
  • Contains 47 exploded-view diagrams, 38 torque specification tables, and 2 detailed wiring schematics
  • 643 pages of technical content delivered as a direct download the moment payment clears
  • Stored against your account so you can retrieve it after a hard-drive loss
  • Full-text search finds any part number in seconds
  • Laid out for standard letter and A4 printing
  • This 1996 first edition serves as the primary technical reference for the 4.3L V-6 balance shaft engine configuration, including EFI and carburetor fuel systems

Engine Service Coverage

This 643-page MerCruiser service publication provides technical documentation for the repair and maintenance of the 4.3L 262 CID V-6 marine engine series. The manual details procedures for engine removal and installation, covering specific requirements for Alpha and Bravo drive configurations. Technical sections document the fuel system, including both MerCarb and Weber carburetor setups, as well as electronic fuel injection (EFI) throttle body systems. Electrical system coverage extends to the starting, ignition, and charging circuits, with comprehensive wiring diagrams included for troubleshooting.

Specification Highlights

Technical data is provided for critical engine measurements, including cylinder bore, piston-to-bore clearances, and crankshaft journal dimensions. Cylinder head bolt torque is specified at 65 ft-lbs (88 Nm) for standard engines, with specific angle-torque requirements documented for Gen+ models. Valve train specifications include a rocker arm ratio of 1.50:1 and roller hydraulic lifter data. Main bearing clearances are listed for production and service intervals, supported by tolerance charts for proper fitment. An official 643-page Mercury Marine OEM technical publication documenting the 1993–1999 MerCruiser 4.3L (262 CID) engine series, covering assembly, electrical, cooling, fuel, and exhaust systems for the balance shaft and Gen+ variants.

Manual FAQ, Purchase & Download Details

What content is included in this service manual regarding the GM V-6 262 CID marine engine configurations? keyboard_arrow_down

643-page manual covers the MerCruiser MCM 4.3L Alpha and Bravo model series including Gen+ variants. It contains detailed sections on the engine mechanical components, electrical systems, fuel delivery, cooling systems, exhaust, and power steering.

Is there a reference section for torque specifications and tool requirements in this document? keyboard_arrow_down

Yes, the manual includes dedicated specification tables for torque values and a list of required tools, lubricants, and sealants for components like engine mounts and hose fittings.

Are wiring diagrams and connector pinout references available for the electrical systems? keyboard_arrow_down

Manual contains an electrical systems section which includes wiring diagrams and instrumentation references for the starting, ignition, and charging systems. These diagrams and charts are provided to support the documentation of the electrical architecture of the covered engines.

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