Manuals for Borg Warner Marine Transmissions (Gearboxes)
(including "Velvet Drive")
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Thanks,
Dennison
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
clear drawings making understanding easy
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$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.
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
Brochure
71C
72C
3 pages
publ. - no date given
<1 MB file
Installation Manual
Velvet Drive
68 pages
publ. August 1982
2 MB file
Service Manual
Velvet Drive
70C and 71C
65 pages
publ. November 1979
21 MB file
"Velvet Drive" Service Manual
Reduction Gear Assembly
2.100 : 1 ratio
use in conjuction with Service Manuals for
70C 71C 72C
18 pages
publ. - no date given
3 MB file
"Velvet Drive" Service Manual
70C 71C
ASI-70C ASI-71C
ASI-70B ASI-71B
ASI-70 ASI-71
67 pages
publ. October 1985
8 MB file
Service Manual
71C 72C Direct Drive
Reduction Gear Ratios:
1.5 : 1 1.88 : 1
1.91 : 1 2.1 : 1
2.57 : 1 2.91 : 1
83 pages
publ. April 1986 ?
3 MB file
Velvet Drive Owner's Manual
71C 72C
In-Line and V-drive models
(At this time, these transmissions was produced by Regal Beloit Corporation, not Borg Warner)
13 pages
publ. October 1995
4 MB file
Owners Manual
71C 72C
and V Drives
All Ratios
(At this time, these transmissions was produced by Regal Beloit Corporation, not Borg Warner)
11 pages
publ. - no date given
6 MB file
Service Manual
73C
31 pages
publ. May 1987
1 MB file
Service Manual
CR2
model 10-13 (similar to 71C
model 10-14 (similar to 72C)
17 pages
publ. - no date given
1 MB file
Service Manual
Series 500
35 pages
publ. 1990
1 MB file
Service Manual
Series 5000
55 pages
publ. - no date given
2 MB file
Service Manual
Series 7000
Velvet Drive
21 pages
publ. December 1986
2 MB file
Owners Manual
Liberty Series
Model A (angle down)
Model V (V-drive)
12 pages
January 2005
< 1 MB file