Manuals for Universal Diesel EngineS

(including Universal Atomic Diesels)

Dennison Berwick at launch of Marine Diesel Basics 1 in Toronto, Canada

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

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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

Universal diesel engines Parts Supersession Listing

Parts Supersession Listing
(new parts number replacing older numbers)


35 pages
publ. September 2017

< 1 MB file

Universal diesel engine 15 service manual

Service Manual

Model 15 and 25
15 (5411)
20 (5416)
25 (5421)
30 (5424)
40 (5432)
50 (5444)

28 pages
no publ. date

1 MB file

Universal M2-12A(C) marine diesel engine Operators Manual

Operators Manual



56 pages
publ. June 2015

7 MB file

Universal Model 5416 diesel engine Parts Manual

Parts Manual

Model 20 (5416)


42 pages
publ. - no date given


< 1 MB file

Operator's Manual Universal diesel engine M3-20B Service Manual

Operator's Manual


54 pages
publ.  Jan. 2000

5 MB file

Universal M-25XPB marine diesel engine Workshop Manual

Service Manual


116 pages
publ. January 2001


15 MB file

Universal M-25XPB marine diesel Parts List

Parts List


76 pages
publ. December 2001

3 MB

Universal Diesel Engines 12 - 50 Service Manual

Owner's Manual

12       25
15       30
18       40
20      50

86 pages
publ. no date

2 MB file

Universal M12 diesel engine Service manual

Service Manual

M-12 M2-12
M3-20 M4-20
M-25 M-25XP

184 pages
publ. 1989


10 MB file

Universal Atomic 5411 diesel engine Operation and Maintenance Manual

Operation and Maintenance Manual

5411        5416
5424       5432

47 pages
publ. - no date given


< 1 MB file

Universal Atomic 5416 diesel engine service manual

Service Manual

Models 20 and 30
(5416 and 5424)

5411       5416
5424      5432

28 pages
publ. - no date given

< 1MB file

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