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Cylinders: 3
Bore: 2.95 in.
Stroke: 2.76 in.
Displacement: 57.00 cu. in.
Aspiration: Natural

Length: 27.50 in.
Width: 20.90 in.
Height: 22.40 in.
Weight: 285.00 lbs.

This model is no longer in production. Please select from the menu for parts information and technical documents such as advanced specifications, diagrams, manuals and product bulletins.




Technical Documents

Important Note: Technical information is provided on our website for your reference and convenience. Westerbeke recommends that your engine, generator or climate control system is serviced and/or installed only by an authorized Westerbeke distributor or dealer. Click here to locate the Master Distributor or Dealer for your area.

Advanced Specifications
Document Name Publication Date
  Advanced Specifications - Old Model N/A
Manuals (Operators, Parts, Technical, Installation)
Document Name Publication Date
  Installation Manual - Marine Engines & Generators 6/1/2016
  Universal Superseded Parts Listing August 2015 8/1/2015
  Parts Manual 200142 10/1/1990
  Operator's Manual 200157 N/A
  Technical Manual 200155 N/A
Guides (Troubleshooting)
No matching records found
Diagnostic Software
No matching records found
Diagrams (Wiring, Installation)
Document Name Publication Date
  Wiring Diagram 039144 Revision J 12/12/2008
  Wiring Diagram 039144 Revision K 12/12/2008
  Wiring Diagram 039144 Revision N 8/7/2008
Bulletins (Service, Parts, Product Recalls)
Document Name Publication Date
  Service Bulletin #272: Universal M-25 and M-25XP Head Gasket and Shim

  Parts Bulletin 2009-3: Sea Water Pump P/N 301357

Applies To:

  Service Bulletin #242: Manufacture Date Code

  Service Bulletin #238: Fuel Pump Inlet Filter Part Number 048076

  Service Bulletin #214: Front Mounting Brackets #302969

  Service Bulletin #213: No Starter Motor Activation

  Service Bulletin #206: R.P.M. Ranges

  Service Bulletin #195: Model 5425 and 5432

  Service Bulletin #155: Keyswitch

  Service Bulletin #136: Shift Lever

  Service Bulletin #125: Oil Pressure Switches





Buy and View Parts Below : Click each image for a larger view and detailed list of the parts for that section. If images do not appear under a "Complete Parts Lists" heading, please scroll down to access the parts related information available for this model.


Download Parts Documentation
Document Name Publication Date
  Parts Manual 200142 10/1/1990
Superseded Parts List
Document Name Publication Date
  Universal Superseded Parts Listing August 2015 8/1/2015