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20.0 BEG - 50Hz

Cylinders: 4
Bore: 3.38 in.
Stroke: 3.70 in.
Displacement: 133.30 cu. in.
Aspiration: Natural

Length: 42.00 in.
Width: 22.40 in.
Height: 28.20 in.
Weight: 968.00 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
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Manuals (Operators, Parts, Technical, Installation)
Document Name Publication Date
  Technical Manual 048088 4/1/2018
  Installation Manual - Marine Engines & Generators 6/1/2016
  Operator's Manual 041302 3/1/2016
  Westerbeke Superseded Parts Listing August 2015 8/1/2015
  Parts Manual 048000 12/1/2002
Guides (Troubleshooting)
Document Name Publication Date
Diagnostic Software
No matching records found
Diagrams (Wiring, Installation)
Document Name Publication Date
  Wiring Diagram 040620 Revision C 12/12/2008
  Wiring Diagram 040620 Revision C 12/12/2008
  Wiring Diagram 044580 Revision B 12/12/2008
  Installation Drawing 43328 12/8/1998
Bulletins (Service, Parts, Product Recalls)
Document Name Publication Date
  Service Bulletin #265: Ethanol Blended Gasoline

  Parts Bulletin 2009-7 REVISED

Applies To: 20.0 BEG/A, 25.0 BEG/A

  Parts Bulletin 2008-4: Paint Storage

Applies To: All Models

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