Manuals for Westerbeke Diesel Engines

Westerbeke was founded in the United States in 1937 by John H. Westerbeke and from the start focused no developing diesel engines. In 1938, the company began investigating using Detroit Diesel 6-71 engines for marine use. 

In 1959, Westerbeke began marinizing the British Perkins engines. In 1990 Universal Diesel was bought by Westerbeke which now markets marine diesels under both Westerbeke and Universal brand names. 


 

Dennison Berwick portrait

(Message me via Live Chat if don't find what you are looking for, or have old manuals to share to help other sailors.

If these downloads are useful please make a donation to cover web-hosting costs and future development. Or buy a gift for yourself, for family or friends in the MDB eStore. Thank you for your continued support.

Thanks,

Dennison

Marine Diesel Basics eStore items for sale

3 simple steps to make your diesel system reliable and robust

STEP ONE  - Get the manuals for your equipment

Owner, Workshop and Parts Manuals are important documents that should be part of every vessel's library. They contain the detailed information necessary for safe operation, maintenance and correct servicing.  

The manuals on this page are provided for public information and education and can be downloaded for free.  All copyrights belong to copyright holders stated in the documents.

congratulations - by downloading these free manuals you are taking an important step towards making your engine more reliable and robust.


 

STEP TWO - regular maintenance

Simple, regular maintenance is the easiest, quickest and cheapest way to avoid problems and accelerated engine wear. Most expensive repairs start from a lack of basic maintenance or ignoring small warnings. The work is not difficult - it just needs to be done.

The purpose is so that we can enjoy our boat for all the reasons we bought her. Trust yourself. Do the work regularly and be methodical.

 

Download free checklists here

if you need clear, easy-to-understand help

300+ drawings

Seeing is Understanding

Marine Diesel Basics 1
Maintain, Winterize and Recommission

•  explains all parts of the marine diesel system - fuel,
lubrication, breathing, electrics, stern gland, propeller etc.
•  140+ tasks, 300+ drawings, 222 pages
•  tasks are fully explained with clear drawings and minimal text
•  all tools & supplies needed are illustrated for each task
•  paperback US$15.99 £10.99 €12.99
•  ebook (kindle, kobo, ibooks, google, epub) US$9.99


 

STEP THREE - keep a Maintenance Logbook

Keep a detailed and accurate record:

  1. all the work done on your diesel system - what, when  & by who
  2. inventory of serial numbers, component descriptions
  3. early warning of potential problems
  4. time and details of any changes in performance

Use a notebook or use your iPad, tablet or desktop and record the information in an editable PDF directly as you work.

click to enlarge

Maintenance eLogbook

If you've every struggled to keep a logbook, this editable eLogbook may be exactly the help you need.

- "fillable form" PDF
- clickable checklists
- write, edit  details of all tasks completed
- 40+ drawings to help inspections
- all common measurements with live calculators
- just $7.99 196 pages

"the Perfect Logbook" - verified purchaser

Service Bulletins

Westerbeke Marine diesel Tachometer Bulletin

Bulletin #148
Field Troubleshooting Tachometer/Hourmeter

 

3 pages
publ. January 1985

 

< 1 MB file

Westerbeke Marine Diesel Engine Serial Number Guide

Engine Serial Number Guide

 

1 page
publ. May 2012

< 1 MB file

Westerbeke Engine Model History

Engine Production Dates
Westerbeke propulsion & gensets
Universal propulsion

 

5 pages
publ. August 2005
(copyright unknown)

< 1 MB file

Westerbeke Raw Water Change of Design Drawing

Drawing

Change of Design of Raw Water Pump

 

1 page
publ. - no date given (c.2004)

 

<1 MB file

Westerbeke diesel engine Fuel Filter Bulletin 238

Service Bulletin #238

New filter being added to engine lift pump

 

1 page
February 2003

 

< 1 MB file

 

 

Westerbeke diesel engine Serial Code Bulletin 2004

Service Bulletin
recognize engine serial numbers

Service Bulletin #242

 

1 page
publ. August 2004

 

< 1 MB file

 

 

 

Westerbeke DS5 diesel engines Raw Water Pump Weep Hole Bulletin 1980

Service Bulletin #(not clear)

Sea Water Pump Weep Hole (on transmission)
Engines: DS5, DS7 and W7

 

2 pages
publ. February 1980

< 1 MB file

Westerbeke diesel engines Oil Pressure Switches Bulletin #125 1983

Service Bulletin #125

Use correct wrench when removing oil pressure switch

 

1 page
publ. August 1983

< 1 MB file

Westerbeke diesel engines with HBW Transmission Bulletin #136 1984

Service Bulletin #136

HBW (Short Profile Sailing Gears) Transmission Shift Lever Adjustment

 

2 pages
publ. February 1984

 

<1 MB file

Westerbeke 72A Alternator Bulletin 2015

Bulletin

Alternator 70A

 

1 page
publ. March 2015

< 1 MB file

Westerbeke Marine Engine Installation Manual 2004

Installation Manual

Marine Engines/Generators

 

48 pages
publ. May 2004

 

5 MB file

Westerbeke diesel engine generator 38B Service

Service Manual #43440

38B       RD 80
W-27    W-27A
W-33    W-33A
42B FOUR

Generators:
WMD 11.060Hz   WMD 12.5-60Hz    12.5 BTDA
WMD 8.3-50Hz   WMD 9.4-50Hz   9.4 BTDA
11.0 BTD    12.5 BTD    8.3 BTD    9.4  BTD

publ. April 1998
110 pages

8MB file

Westerbeke Wiring All Marine Engines Schematic 1991

Wiring Schematic

Westerbeke Marine Engines

 

1 page

publ. August 1991

< 1 MB file

Westerbeke diesel engine Parts Supercession List 2014

Parts Supercession List

(change of parts numbers)

 

139 pages
publ. September 2017

< 1 MB file

Westerbeke 6A-1 diesel engine Wiring Drawing

Wiring Drawing
6A-1
10A-1

1 page
publ. March 1999?

< 1 MB file

Westerbeke Four-91 diesel engine Parts List

Parts List

Four-91

37 pages
publ. 1971

 

12 MB file

Westerbeke 4.107 marine diesel engine Brochure

Brochure

Four - 107
(4.107)

 

4 pages
publ. - no date given

 

1 MB file

Westerbeke diesel engine DS5 Brochure

Brochure
Model DS  5 hp

 

2 pages
publ. no date given

 

 

<1 MB file

Westerbeke DS5 etc diesel engine Parts List

Parts List
DS5
DS7
W7

and WPD3, WPD4 (generators)

 

68 pages
publ. December 1977


4 MB file

Westerbeke W7 marine diesel engine Brochure

Guide

Westerbeke 7

 

6 pages
publ. August 1979

 

2 MB file

Westerbeke 7A One marine diesel engine Brochure

Technical sheet

7A One

 

2 pages
publ. May 2001

 

< 1 MB file

Westerbeke 7A-1 marine diesel engine Operator Manual

Operators Manual

7A-1
11A-1

 

61 pages
publ. April 2001

 

5 MB file

Westerbeke 7A One Marine diesel engine Parts List

Parts List

7A One

 

36 pages
publ. - no date given

 

< 1 MB file

Westerbeke 7A One Wiring Schematic

Wiring Schematic 

7A One  

1 page
publ. Dec 1993?

< 1 MB file

Westerbeke 7A One Wiring Schematic Rev A

Wiring Schematic Revision A

7A One  

1 page
publ. Dec 1994?

< 1 MB file

Westerbeke 7A One Wiring Schematic Rev B

Wiring Schematic Revision B
7A One

1 page
publ. Dec 1994?

< 1 MB file

Westerbeke 7A One Wiring Schematic Rev C

Wiring Schematic Revision C
7A One

1 page
publ. December 2000

1 MB file

Westerbeke W10 Two Marine Diesel Engine Booklet

Introduction Booklet

10 Two

 

8 pages
publ. June 1987

 

2 MB file

Westerbeke 10 Two Marine Diesel Engine Operators Manual

Operator's Manual

10 Two

 

38 pages
publ. June 1983

3 MB file

Westerbeke diesel engine 10A-1 Wiring Drawing

Wiring Schematic

10A-1

 

1 page
publ. December 1999

1 MB file

Westerbeke 10 Two Marine Diesel Engine Technical Manual

Technical Manual

10 Two
12B Two

 

158 pages
publ. June 1993

11 MB file

Westerbeke 10 Two Marine Diesel Engine Parts List

Parts List of "fast-moving parts"

10 Two

 

36 pages
publ. - no date given

 

1 MB file

Westerbeke 11A One diesel engine Brochure

Brochure
11A One

 

2 pages
publ. May 20012

< 1 MB file

Westerbeke 11A One marine diesel with HBW40 transmission Drawing

Drawing

11A One marine diesel with HBW 40 transmission

 

1 page
publ. - October 2000

 

<1 MB file

Westerbeke 12b Two marine diesel engine Operator Manual

Operator's Manual

12B Two

 

82 pages
publ. January 1988

 

2 MB file

Westerbeke 12C Two Brochure

Brochure
12C Two

 

2 pages
publ. March 2009

 

<1 MB file

Westerbeke 12C Two Marine Diesel Engine Operator Manual

Operators Manual

12C Two
12D Two

 

68 pages
publ. - January 2011

 

3 MB file

Westerbeke 12C Two Marine Diesel Engine Service Manual

Service Manual

12C Two
12D Two

 

59 pages
publ. June 2012

 

6 MB file

Westerbeke 12C Two marine diesel engine Parts List

Parts List

12C Two

 

45 pages
publ. October 1994

 

2 MB file

Westerbeke 12D marine diesel engine with PRM 120 transmission Installation Drawing

Installation Drawing

12D with PRM 120 transmission

1 page
publ. January 2015

< 1 MB file

Westerbeke 12D Two Marine Diesel Engine Specifications Brochure

Specifications Brochure

12D Two

 

2 pages
publ. - no date given

 

< 1 MB file

Westerbeke W-13 marine diesel engine Operator manual

Operators Manual

W-13       W-21
W-27       W-33

29 pages
publ. - no date given

 

3 MB file

Westerbeke 13A marine diesel engine Owner's Manual

Operator's Manual

13A     18
21A     27A
33A

45 pages
publ. July 1986

 

2 MB file

Westerbeke 30B Three Marine Diesel Engine Operators Manual

Operators Manual

20B Two
30B Three
30C Three

 

72 pages
publ. January 2011

 

10 MB file

Westerbeke 20B Two Marine Diesel Engine Technical Manual

Technical Manual

20B Two
30B Three

 

99 pages
publ. April 1990

 

4 MB file

Westerbeke 20B Two Marine Diesel Engine Parts List

Parts List

20B Two
30B Three

 

71 pages
publ. October 1994

 

MB file

Westerbeke 30C Three Parts Drawing

Installation Drawing

30C  Three
20C Two
12D Two

 

1 page
publ. February 2010

 

< 1 MB file

Westerbeke 30 diesel engine Technical Manual

Technical Manual

Westerbeke 30
(formerly Four-91)

 

156 pages
publ. September 1980

 

16 MB file

Westerbeke 35D Three diesel engine Brochure

Information Brochure

35D Three

 

2 pages
publ. September 2008

 

<1 MB file

Westerbeke 35B Three Marine Diesel Engine Operator Manual

Operator's Manual

35B Three
38B Four
42B Four

 

108 pages
publ. March 1988

4 MB file

Westerbeke 35C Marine Diesel Engine Parts List

Parts List

35C
35D

 

122 pages
publ. March 2003

 

4 MB file

Westerbeke 35E Three Marine Diesel Engine Drawing

Technical Drawing

35E Three with PRM 120 transmission

 

1 page
publ. February 2010

< 1 MB file

Westerbeke 44A Four Marine diesel Engine Operator Manual

Operators Manual

35C Three
35D Three
35E Three

44A Four
44B Four
44C Four

62 pages
publ. April 2015

6 MB file

Westerbeke 44A Four Marine Diesel Engine Service Manual

Technical Manual

35C Three
35D Three
35E Three

44A Four
44B Four
44C Four

109 pages
publ. April 2010

4 MB file

Westerbeke 40 marine diesel engine Brochure

Brochure

40 formerly FOUR-107

 

4 pages
publ. 1986 ?

 

1 MB file

Westerbeke 40 marine diesel engine Brochure 1978

Brochure

40 

 

4 pages
publ. April 1978

1 MB file

westerbeke-40

Technical Manual

40

286 pages
publ.  July 1980

 

6MB file

Westerbeke diesel engine 40NA Operators Manual

 

Operator's Manual

40NA

116 pages
publ., 1st ed. February 1988

 

8MB file

Westerbeke 40a marine diesel engine Brochure

Brochure

40A

 

2 pages
publ. - no date given

 

< 1 MB file

Westerbeke 44A Four marine diesel engine Service Manual

Service Manual

44A Four
35C Three

104 pages
publ. March 2001

 

 5 MB file

Westerbeke 46 diesel engine Operator Manual

Operator's Manual

Westerbeke 46

 

48 pages
publ. May 1986 (2nd ed.)

 

2 MB file

Westerbeke diesel engine 50 Service manual

Technical Manual #23156

50 Series

119 pages
publ. 2nd ed. January 1981

 

8MB file

 

Westerbeke 55A Four marine diesel engine Operators Manual

Operators Manual

55A Four

 

44 pages
publ. February 1997

 

4 MB file

Westerbeke diesel engine 55B Operator Manual

Operator's Manual

55B-Four
55C-Four

 

59 pages
publ. 3rd. Ed. September 2008

 

9 MB file

Westerbeke 55B Four Marine diesel Engine Service Manual

Service Manual

55B Four
55C Four

 

86 pages
publ. September 2006

 

5 MB file

Westerbeke 55B Four Marine diesel Engine Parts List

Parts List

55B Four
55C Four
55D Four

 

46 pages
publ. November 2017

4 MB file

Westerbeke 55B Four marine diesen engine Installation Drawing

Drawing

55B Four  engine installation

 

1 page
publ. July 2010

2 MB file

Westerbeke 55D Four Diesel Engine Technical Specifications

Technical Specifications

55D Four

2 pages
publ. July 2010

 

< 1 MB file

Westerbeke 55D diesel engine with ZF 25M transmission Drawing

Installation Drawing

55D Four

1 page
publ. June 2010

< 1 MB file

Westerbeke 63B Marine Diesel Engine Operators Manual

Operators Manual

63B and 63C  Four
71B and 71C  Four
82B  Four
108B and 108C Six

58 pages
publ. March 2001

 

5 MB file

Westerbeke 63D Four marine diesel engine Operators Manual

Operators Manual

63D Four

 

58 pages
publ. March 2001

 

5 MB file

Westerbeke 64A Four marine diesel engine Operators Manual

Operators Manual

64A Four

 

62 pages
publ. December 2003

 

6MB file

Westerbeke 65A Four Operator Manual 2014

Operator's Manual
65A-Four
65B-Four

 

64 pages
publ. October 2014

 

7 MB file

Westerbeke 80N4 etc marine diesel engine Operators Manual

Operators Manual

80N4       110T4
120N6      120-T4A
170T6       170T6A

 

61 pages
publ. July 2016

 

9 MB file

cover of Westerbeke Electronic Governor Troubleshooting Guide

Adjustment/Calibration
and Component Troubleshooting Guide

6 pages
publ. revised 3rd ed. Sept. 2008

 

1 MB file

Westerbeke DS5 marine diesel engine Technical Manual

Technical Manual

DS-5    DS-7       W7

Generators:
WPD3     WPD4

 

112 pages
publ. June 1978
language: English

8 MB file

Westerbeke L25 diesel engine Technical Manual

Technical Manual
L25

 

98 pages
publ. July 2010

5 MB file

Westerbeke M2-12 marine diesel engine Operation Manual

Owner's Manual

M2-12      M3-20
M4-30     M-2SXP
M-12        M-15
M-18       M-20
M-25
M-35       M-30
M-40       M-50

74 pages
publ. - no date given

MB file

Westerbeke W52 etc marine diesel engines Operators Manual

Operator's Manual

W52    W58
W70    W100

 

27 pages
publ. June 1983

<1 MB file

Westerbeke 14088 marine diesel engine Service Manual Navy

Service Manual

engine 14088
modifications on Perkins 4.99, 4.107 and 4.108

 

208 pages
publ. February 1967

 

5 MB file

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