PATH: Home » Contents > Boat Building » Boat Equipment > Propulsion > Engines > Universal >
^ Kabota, Westerbeke >
PAGE CONTENTS:
^ Universal Marine Power: Introduction, History, Contact Information Link, etc.
^ Universal M-50: Overview, History, etc.
^ Universal M-50: Specifications w/Engine Duty Ratings, etc.
^ Documentation: Catologs, Brochures, SpecSheets, OpManuals, Parts Lists, Shop Manuals, etc.
^ Forum Posts, Tech Tips & Tech Notes.
^ Publications & Media: Books, Magazines, Articles, Websites & Videos.
^ Related AEABoats Webpages (including Main Topic Page Links).
^ Disclaimer: Use our website at your own risk. Report errors, omissions, dead links, additions, etc.
^ Visit our FEATURED ARTICLES Home Page!
^ Academy Members must SIGN IN to access the Comments Section! Renew!
^ Discover how to become an Academy Member and gain access to additional pages and programs!
NOTES:
With over 75 years experience with marine propulsion engines, it’s easy to see why Universal marine diesel engines by Westerbeke have led the way in auxiliary marine propulsion. See our Universal Marine Power webpage for company history and contact information, PLUS information about other Universal Marine Power products.
Universal M-50 Overview and History
_Model_Overview_And_History_
Specifications For Universal M-50
4-Stroke Cycle Diesel Marine Engines
Including Other Marinized Versions & Generators
TABLE KEY:
⊗ = Data Not Available from Data Source. ? = …? = ¿…? = Data Not Confirmed.
DS = Data Source: U = Universal Motor Co. (Westerbeke). BD = BoatDiesel.com = …B.
^ …f = Forum. …w = Webpage. …c = Catalog. …b = Brochure. …s = SpecSheet.
^ …o = Owner’s/Operator’s Manual. …m = Service/Repair/Technical/Workshop/Shop Manual.
^ …1,2,3,A,B,C,etc = Source #, Version, Revision.
CYL = Cylinder Configuration-Number−Liner Type:
^ Cylinder Configuration: u… = Vertical (Upright). I = In-Line.
^ Liner Type: P = Parent/Native Bore. b… = Borable Oversize.
^ ^ Liner type sometimes had to be determined from Shop Manual and/or Parts List.
BORE & STROKE: …mm = Millimeters. …” = …in = Inches.
DISPLACEMENT: …cc = Cubic Centimeters (cm³). …L = Liters (Litres). …ci = Cubic Inches (in³).
⇑ = Base Engine Manufacturer. ⇒ = Engine Marinizer (Mariniser).
MODEL: EC = Engine Code. Cylinder Block Capacity ID Code.
RATING: See the Engine Duty Ratings at the end of the table.
ASP: Aspiration-Fueling: N = Naturally Aspirated. T = Turbocharged.
^ Diesel: M = Mechanical Injection. I = Integral Injector. C = Common Rail. E = Electronic Injection.
POWER: kW = Kilowatts. HP = Horsepower. BHP = Brake Horsepower. MHP = Metric Horsepower.
@RPM = Power Ratings @ Revolutions Per Minute.
YEARS MFR’d: Beginning-Ending. Trailing “–” (Dash) without an Ending Date = Still in Production.
Click on Model Links below for other Model Pages. Click on Data Source Links for Catalogs, Brochures, SpecSheets, Operator’s Manuals, Shop Manuals, etc.
| BASE ENGINE | DS | CYL | BORE | STROKE | BORE | STROKE | DISPLACEMENT |
|---|---|---|---|---|---|---|---|
| Kubota Model | DS | uI-⊗−⊗ | ⊗mm | ⊗mm | ⊗in | ⊗in | ⊗cc / ⊗L / ⊗ci |
| ⇑ KUBOTA | |||||||
| MODEL − RATING | DS | ASP | kW | BHP | MHP | @RPM | YEARS MFR'd |
| Model − ⊗ | DS | N-M | ⊗ | ⊗ | ⊗ | ⊗ | 19??-19?? |
| ⇒ UNIVERSAL | |||||||
| MODEL − RATING | DS | ASP | kW | BHP | MHP | @RPM | YEARS MFR'd |
| M50 − ⊗ | DS | N-M | ⊗ | 42 | ⊗ | ⊗ | 1982-1997 |
NOTES: Replaced 5444. 520± sold.
| BASE ENGINE | DS | CYL | BORE | STROKE | BORE | STROKE | DISPLACEMENT |
|---|---|---|---|---|---|---|---|
| _Mfr_Model_ | DS | uI-⊗−⊗ | ⊗mm | ⊗mm | ⊗in | ⊗in | ⊗cc / ⊗L / ⊗ci |
| ⇑ _MFR_ | |||||||
| MODEL − RATING | DS | ASP | kW | BHP | MHP | @RPM | YEARS MFR'd |
| _Model_ − ⊗ | DS | N-M | ⊗ | ⊗ | ⊗ | ⊗ | 19??-19?? |
| ⇒ _MARINIZER_ | |||||||
| MODEL − RATING | DS | ASP | kW | BHP | MHP | @RPM | YEARS MFR'd |
| _Model_ − ⊗ | DS | N-M | ⊗ | ⊗ | ⊗ | ⊗ | 19??-19?? |
NOTES:
Engine Duty Ratings
Con = Continuous = Commercial
Int = Intermittent = Pleasure Craft
Gen = GenSet = Generator (Constant Speed)
Documentation
If you can help us add information, Catalogs, Brochures, Spec Sheets, Pictures, OpManuals, Parts Lists, Shop Manuals, etc. that we lack, please submit the info or link in the Comment Box below, or attach the PDF to an email to the Editor♥EverythingAboutBoats.org (Replace “♥” with “@”). Thanks!
Catalogs:
Westerbeke Product Catalog (English) from Westerbeke.
Westerbeke Product Catalog (Portuguese) from Westerbeke.
Westerbeke Product Catalog (Spanish) from Westerbeke.
Brochures:
+
SpecSheets/Data Sheets:
Universal SpecSheet for M3-20B Diesel Marine Engine (7/1/2015) From Westerbeke.
+
Charts and Graphs:
+
Pictures:
+
Press Releases (by Date = YYMMDD):
161209 Westerbeke Corporation Affiliate, WBIP LLC, Settles Patent Infringement Lawsuit Against Kohler Co from Westerbeke.
Model History:
Westerbeke Propulsion Model History (12/8/05) from Westerbeke.
Serial Number Guide – Manufacture Date Code Identification:
Westerbeke Serial Number Guide – Manufacture Date Code Identification (5/12) from Westerbeke.
Engine Replacement Guide
Engine Replacement Guide 11-11 from Westerbeke.
Installation Manuals/Instructions:
Universal Installation Manual – Marine Engines & Generators (Rev 4) for All (6/1/2016) From Westerbeke.
Installation Diagrams & Drawings with Dimensions:
Universal Installation Drawing 201088 for M3-20B (1/21/2015) From Westerbeke.
Owner’s/Operator’s Manuals:
Universal Operators Manual #200494 (Rev 2) for M3-20A, M3-20B, M-25XPA, M-25XPB, M-35A, M-35B (2/10) from L-36.
Universal Operator’s Manual 200550 (Rev 2) for M3-20B, M-25XPB, M-35B, M-40B, M-50B (2/1/2010) From Westerbeke.
Parts Schematics with Exploded Views & Parts Lists:
Universal Parts List #201009 (Ed 1) for M3-20B (6/01) from Westerbeke.
Universal Parts List #201009 (Ed 1) for M3-20B (6/01) from L-36.
+
Parts Supersession Listing:
Universal Superseded Parts Listing (8/1/2015) From Westerbeke.
Universal Parts Supersession Listing (8/14) from Westerbeke.
Parts Bulletins:
Universal Parts Bulletin 2007-1: Part Number Errors M3-20B (4/25/2007) From Westerbeke.
Repair/Service/Technical/Workshop/Shop Manuals:
Universal Service Manual #200562 (Ed 1) for M3-20B (7/01) From Westerbeke.
Universal Service Manual #200562 (Ed 1) for M3-20B (7/01) from L-36.
Wiring Diagrams:
Universal Wiring Diagram #039144 (Rev J) for All (12/12/2008) From Westerbeke.
Universal Wiring Diagram #039144 (Rev K) for All (12/12/2008) From Westerbeke.
Universal Wiring Diagram #039144 (Rev L) for All (12/12/2008) From Westerbeke.
Universal Wiring Diagram #039144 (Rev M) for All (3/2/2009) From Westerbeke.
Universal Wiring Diagram #039144 (Rev N) for All (8/7/2008) From Westerbeke.
Service Bulletins:
Westerbeke Service Bulletin #125: Oil Pressure Switches (8/14/83) from Westerbeke.
Westerbeke Service Bulletin #136: Shift Lever (2/9/84) from Westerbeke.
Westerbeke Service Bulletin #155: Keyswitch (6/21/85) from Westerbeke.
Westerbeke Service Bulletin #238: Fuel Pump Inlet Filter Part Number 048076 (2/28/03) from Westerbeke.
Westerbeke Service Bulletin #242: Manufacture Date Code (8/20/04) from Westerbeke.
+
Product Recalls:
+
Forum Posts, Tech Tips & Tech Notes
If you think we should add a Forum Post, Tech Tip or Tech Note to this webpage,
please submit the Link in the Comment Box below or via email to
the Editor♥EverythingAboutBoats.org (Replace “♥” with “@”). Thanks!
More Forum Posts, Tech Tips & Tech Notes may be found at Propulsion Machinery, Engines,
DIY: Propulsion Machinery, DIY: Engines, and the main AEABoats _Mfr_ webpage.
.
Forum Posts:
+
Tech Tips:
+
Tech Notes:
+
Publications & Media:
If you think we should add a Book, Magazine, Article, Website & Video to this webpage,
please submit the Link in the Comment Box below or via email to
the Editor♥EverythingAboutBoats.org (Replace “♥” with “@”). Thanks!
More Books, Magazines, Articles, Websites & Videos may be found at Propulsion Machinery, Engines,
DIY: Propulsion Machinery, DIY: Engines, and the main AEABoats _Mfr_ webpage.
Publications, etc. with BOLD Titles are part of our Academy eLibrary. To view the entire Publication, etc. as a PDF, etc., click on the Title Link and then scroll down that webpage to “Academy eLibrary“.
If you would like to donate a Book, Magazine or Video to our Academy eLibrary,
please email Donations#AnchorsAweighAcademy.org to arrange.
Books:
+
Magazines:
+
Articles:
Westerbeke by Bill Parlatore from PassageMaker ©2005
+
Websites:
www.OldMarineEngine.com: Discussion Board.
+
Videos:
+
Related AEABoats Webpages
+
Main Topic Page Links
BOAT PRODUCTION
^ Boat Designing Schools
^ Boat Designers (Naval Architects, Boat Plans, Kits,+)
^ Statutes & Standards
^ ^ Laws
^ ^ Classification Societies
^ ^ ABYC (American Boat and Yacht Council – US)
^ ^ NFPA (National Fire Protection Association – US)
^ ^ International Standards (IMO)
^ Boat Building & Refitting Tools‚+ (Manufacturers, Specs, Manuals, Recalls, Suppliers,+)
^ Boat Materials (Manufacturers, Specs, Manuals, Recalls, Suppliers,+)
^ Boat Equipment (Manufacturers, Specs, Manuals, Reviews, Recalls, Suppliers,+)
^ ^ Steering & Thrusters
^ ^ Galvanic Corrosion Protection
^ ^ Hull Penetrations & Openings (Thru-Hulls, Scuttles, Skylights, Hatches,+)
^ ^ Propulsion Machinery (Types, Control Systems,+)
^ ^ ^ ENGINES: 4-Stroke & 2-Cycle (Petrol/Gasoline, Diesel, CNG, A~Z,+)
^ ^ ^ Engine-to-Marine Gear Interfaces (SAE Specs, Damper Plates, Jackshafts,+)
^ ^ ^ Marine Gears (Inboards, V-Drives, IOs, OBs, Surface-Piercing,+)
^ ^ ^ Shafting (Propshafts, Couplings, Seals, Bearings, Struts, Keys, Nuts,+)
^ ^ ^ Propellers (Screws, Water Jets, Paddle wheels,+)
^ ^ Electrical Systems (Direct Current, Alternating Current,+)
^ ^ ^ Auxiliary Generators
^ Marine Suppliers: Countries by Regions
^ ^ Marine Suppliers: United States
^ Boat Building Schools
^ Boat Builders (Model Specs, Manuals, Reviews, Recalls,+)
^ ^ Boat Builders A~Z
^ ^ Boat Builders by MIC (Manufacturer’s Identification Code)
^ ^ Boat Builders: Countries by Regions
^ ^ ^ Boat Builders: United States
^ ^ Boat Builders by Vessel Types
^ Do-It-Yourself Boat Building
BOAT REFITTING & REPAIR
^ Refitters: Countries by Regions (Shipyards, Boatyards, Riggers, Repair Shops,+)
^ ^ Refitters: United States
^ Boat Repair Schools (Hull, Systems, On-Board Equipment, Propulsion Machinery,+)
^ Do-It-Yourself Refitting (Installation, Maintenance, Troubleshooting, Repair,+)
^ ^ DIY: Fundamentals
^ ^ ^ DIY: Tools, Usage, Safety, etc
^ ^ ^ DIY: Rot, Corrosion, Fatigue, etc
^ ^ ^ DIY: Troubleshooting, Failure Analysis, etc
^ ^ DIY: Vessel Structure
^ ^ ^ DIY: Galvanic Corrosion Protection
^ ^ ^ DIY: Hull Penetrations & Openings (Thru-Hulls, Scuttles, Skylights, Hatches,+)
^ ^ DIY: Propulsion Machinery (Control Systems,+)
^ ^ ^ DIY: Engines (Fuels, Troubleshooting, Repair, Rebuilding vs Repowering,+)
^ ^ ^ ^ DIY: Engine Mechanical (Pistons, Rods, Crankshafts, Blocks, Heads, Valves,+)
^ ^ ^ ^ DIY: Engine Lubrication (Splash, Forced, Oil, Filtration, Additives, Oil Analysis,+)
^ ^ ^ ^ DIY: Engine Fuel (Petrol/Gasoline, Diesel, CNG,+)
^ ^ ^ ^ DIY: Engine Electrical (Starting, Charging, Instrumentation,+)
^ ^ ^ ^ DIY: Engine Cooling (Air, Raw, Fresh,+)
^ ^ ^ ^ DIY: Engine Exhaust (Dry, Wet,+)
^ ^ ^ ^ DIY: Engine Mounting (Hard, Soft,+)
^ ^ ^ DIY: Engine-to-Marine Gear Interfaces (Adapter Plates, Damper Plates, Jackshafts,+)
^ ^ ^ DIY: Marine Gears (Inboards, Inboard-Outboards, Outboards, Sail Drives, Pods,+)
^ ^ ^ DIY: Shafting (Shafts, Couplings, CVC Joints, Thrust Bearings, Seals, Cutlass, Struts,+)
^ ^ ^ DIY: Propellers (Screws, Water Jets, Paddle wheels,+)
^ ^ DIY: Electrical Systems
^ ^ ^ DIY: Direct Current
^ ^ ^ DIY: Alternating Current
^ ^ ^ DIY: Auxiliary Generators
PUBLICATIONS & MEDIA + Academy eLibrary (w/Reviews)
^ Books
^ Magazines
^ Websites (w/Links)
^ Videos
^ Authors
DISCLAIMER:
Please remember that your use of our website is at your own risk. We strive to provide the most accurate information available. You can help us. If you find any errors, omissions, dead links, etc. on this webpage, please let us know along with any corrections, additions, updates, etc. in the Comment box below or via email to the Editor♥EverythingAboutBoats.org (Replace “♥” with “@”). Thank you!
to see examples of our website’s valuable contents!
MEMBER COMMENTS
Current Academy Members must SIGN IN to access the Member Comments Section including The Comment Submission Box! If your membership has expired, CLICK HERE to Sign In and Renew.