Manuals for Hatz Diesel Engines

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

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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


Hatz Diesel Engine Model Years List

List of Engine Models


1 page
publ. - no date given


< 1 MB file

Hatz production diesel Engine Specifications

Specifications for engines in production

(termed "Actual")


2 pages
publ. September 2016

1 MB file

Hatz not in production diesel Engine Specifications

Specifications for engines no longer in production

(termed "Historical")


2 pages
publ. September 2016

2 MB file

Hatz diesel engines Diagnostic Trouble Codes

Diagnostic Trouble Codes  SPN/FMI


15 pages
publ.  February 2018

< 1 MB file

Hatz 1B20 diesel engine Manual


1B27 1B30
1B40 1B50

103 pages
publ. October 2018


9 MB file

Hatz 1D41 diesel engine Instruction Book

Instruction Book

1D41      1D50
1D81      1D90


35 pages
publ. - no date given

3 MB file

Hatz E71 Spare Parts List 1981

Spare Parts List

E71 E75
E780 E785


81 pages
publ. May 1981


2 MB file

Hatz E71 diesel engine Spare Parts 1999

Original-spare Parts

E71       E75


98 pages
publ. April 1999

4 MB file

Hatz 2-4L41C Diesel Engine Manual




110 pages
publ. November 2017

6 MB file

Hatz 2G40 Diesel Engine Operator Manual


2G40 H


81 pages
publ. October 2017

4 MB file

Hatz 2L41C Diesel Engine Operator Manual

Operator's Manual



114 pages
publ September 2017


5 MB file

Hatz 3H50TI Diesel Engine Manual




126 pages
publ. September 2017


10 MB file

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