Manuals for Mitsubishi Diesel Engines

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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


Mitsubishi BD2G diesel engine Service Manual

Service Manual



484 pages
publ. December 1986


MB file

Mitsubishi diesel engine 4D56 Workshop manual

Workshop Manual


1994 & after

102 pages


2 MB file

Mitsubishi 4DQ50 diesel engine Service Manual in English

Service Manual

4DQ50 Mitsubishi

(in English)


118 pages
publ. - no date given

3 MB file

Mitsubishi Samofa Diesel Engine 4DQ50 Parts Catalog

Parts Catalog


(for Samofa)

119 pages


5 MB file

Mitsubishi F9Q Series diesel engines Workshop Manual

Workshop Manual

F9Q Series


42 pages
publ. June 2000

1 MB file

Mitsubishi L Series diesel engine Operation & Maintenance Manual

Operation and Maintenance Manual

L Series


78 pages
publ. November 2007


2 MB file

Mitsubishi L Series diesel engines Service Manual

Service Manual

L Series

L2A    L2C    L2E
L3A   L3C    L3E


235 pages
publ. March 2006

5 MB file

Mitsubishi-S3L etc diesel engine Service Manual Dutch

Operating and Maintenance Manual
Handleiding voor gebruik en onderhoud

SL Series


47 pages
publ. August 2008
Alleen nederlandse taal

2 MB file


Mitsubishi S3L diesel engine Service Manual

Service Manual



219 pages
publ. - no date given

5 MB file

Sabb Mitsubishi S4E2 diesel engine Parts Catalogue

Parts Catalogue
serial numbers 63594 and up


58 pages
publ. no. 977:166
publ. October 1986


3 MB file

Mitsubishi SE Series Service Manual

Service Manual

SE series
SE2 series
SF series


164 pages
publ. - no date given

5 MB file

Mitsubishi Diesel Engine 6D2 Workshop Manual

Workshop Manual




265 pages
publ. march 1989

58 MB file



Mitsubishi Diesel Engine Model K Operators Manual

Operators Manual

Model K Series

31 pages
publ. - no date given

8 MB file


Mitsubishi K2AS diesel engine Service Manual

Service Manual

K2AS         K2B
K2C           KE70


116 pages
publ. October 1985


7 MB file

Mitsubishi L2E-Z564SPH diesel engine Datasheet




1 page
publ. - no date given


< 1 MB file

Mitsubishi L3E-Z564SPH diesel engine Datasheet




1 page
publ. - no date given


< 1 MB file

Mitsubishi 6M70 diesel engine Workshop Manual

Workshop Manual



364 pages
publ. - no date given

21 MB file

Mitsubishi S3L2-Z564SP diesel engine Datasheet




1 page
publ. - no date given


< 1 MB file

Mitsubishi S4L2-Z363SPH diesel engine Datasheet



1 page
publ. - no date given


< 1 MB file

Mitsubishi S4Q2-Z365SP diesel engine Datasheet




1 page
publ. - no date given


< 1 MB file

Mitsubishi S4S-Z3DT65SP diesel engine Datasheet




1 page
publ. - no date given


< 1 MB file

Mitsubishi S4S-Z365SP diesel engine Datasheet



1 page
publ. - no date given


< 1 MB file

Mitsubishi S4E diesel engine Service Manual

Service Manual

(for BD2F and DS3F)


340 pages
publ. January 1978


15 MB file

Mitsubishi S6R Series diesel engine Service Manual

Service Manual



318 pages
publ. August 2010


34 MB file

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