
Manuals for Hatz 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
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$17.99 £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:
- all the work done on your diesel system - what, when & by who
- inventory of serial numbers, component descriptions
- early warning of potential problems
- 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.
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

List of Engine Models
1 page
publ. - no date given
< 1 MB file

Specifications for engines in production
(termed "Actual")
2 pages
publ. September 2016
1 MB file

Specifications for engines no longer in production
(termed "Historical")
2 pages
publ. September 2016
2 MB file

Diagnostic Trouble Codes SPN/FMI
15 pages
publ. February 2018
< 1 MB file

Manual
1B20
1B27 1B30
1B40 1B50
103 pages
publ. October 2018
9 MB file

Operator's Manual
1B20
1B27 1B30
1B40 1B50
89 pages
publ. January 2013
6 MB file

Spare Parts Manual
1B20
1B27
1B30
56 pages
publ. April 2010
7 MB file

Instruction Book
1B20V 1B40W
1B30V 1B50V
1B40V 1B50W
37 pages
publ. Jnauary 2011
5 MB file

Spare Parts Manual
1B20V
1B30V
40 pages
publ. September 2006
4 MB file

Spare Parts Manual
1B40
1B50
45 pages
publ. June 2007
5 MB file

Spare Parts Manual
1B40V/W
1B50V/W
39 pages
publ. February 2007
4 MB file

Instruction Book
1D41 1D50
1D81 1D90
35 pages
publ. - no date given
3 MB file

Operator's Manual
1D41
1D42
1D50
1D81
1D90
104 pages
publ. - no date given
7 MB file

Spare Parts Manual
1D42
1D50
1D81
1D90
62 pages
publ. - April 2010
9 MB file

Instruction Book
1D90V
1D90W
32 pages
publ. - January 2011
4 MB file

Spare Parts Manual
1D90V
1D90W
35 pages
publ. - June 2005
3 MB file

Spare Parts List
E71 E75
E79
E780 E785
81 pages
publ. May 1981
2 MB file

Original-spare Parts
E71 E75
E79
E780
E786
98 pages
publ. April 1999
4 MB file

Manual
2-4L41C
2-4M41
4L42C
4M42
110 pages
publ. November 2017
6 MB file

Manual
2G40
2G40 H
81 pages
publ. October 2017
4 MB file

Instruction Book
2G40
2G40 H
22 pages
publ. January 2011
2 MB file

Spare Parts Manual
2G40
31 pages
publ. December 2009
5 MB file

Operator's Manual
2L41C
2M41
2M41Z
114 pages
publ September 2017
5 MB file

Spare Parts Manual
2L41C
3L41C
4L41C
51 pages
publ - February 2010
8 MB file

Spare Parts Manual
2M41
3M41
4M41
54 pages
publ - May 2008
8 MB file

Spare Parts Manual
2W35
3W35
4W35
44 pages
publ - October 2006
8 MB file

Manual
3H50TI
3H50TIC
4H50TI
4H50TIC
126 pages
publ. September 2017
10 MB file

Operator's Manual
3-4L43C
3-4M43
3-4M43Z
96 pages
publ. - no date given
7 MB file

Operator's Manual
4H50TIC
49 pages
publ. - no date given
5 MB file

Spare Parts Manual
4L42C
42 pages
publ October 2008
7 MB file

Spare Parts Manual
4M42
41 pages
publ October 2008
7 MB file

Spare Parts Lists
E108
Z108
D108
V108
42 pages
publ - December 1983
7 MB file