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M3-20A

Cylinders: 3
Bore: 2.60 in.
Stroke: 2.45 in.
Displacement: 39.00 cu. in.
Aspiration: Natural

Length: 26.13 in.
Width: 18.56 in.
Height: 20.00 in.
Weight: 235.00 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 8/1/1995
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  Universal Superseded Parts Listing August 2015 8/1/2015
Guides (Troubleshooting)
No matching records found
Diagnostic Software
No matching records found
Diagrams (Wiring, Installation)
Document Name Publication Date
  039144 Revision M 3/2/2009
  Wiring Diagram 039144 Revision J 12/12/2008
  Wiring Diagram 039144 Revision K 12/12/2008
  Wiring Diagram 039144 Revision L 12/12/2008
  Wiring Diagram 039144 Revision N 8/7/2008
Bulletins (Service, Parts, Product Recalls)
Document Name Publication Date
  Service Bulletin #242: Manufacture Date Code

8/20/2004
  Service Bulletin #238: Fuel Pump Inlet Filter Part Number 048076

2/28/2003
  Service Bulletin #213: No Starter Motor Activation

4/13/1994
  Service Bulletin #155: Keyswitch

6/21/1985
  Service Bulletin #136: Shift Lever

2/9/1984
  Service Bulletin #125: Oil Pressure Switches

8/14/1983

 

 

 

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
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Superseded Parts List
Document Name Publication Date
  Universal Superseded Parts Listing August 2015 8/1/2015