Manuals for Borg Warner Marine Transmissions (Gearboxes)

(including "Velvet Drive")

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.

If these downloads are useful please make a donation to cover web-hosting costs and future development.

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

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


 

Borg Warner 71C marine transmission Brochure

Brochure

71C
72C

 

3 pages
publ. - no date given

 

<1 MB file

Velvet Drive Marine Installation Manual

Installation Manual

Velvet Drive

 

68 pages
publ. August 1982

 

2 MB file

Borg Warner Velvet Drive 70c etc marine transmission Service Manual 1979

Service Manual

Velvet Drive
70C and 71C

 

65 pages
publ. November 1979

 

21 MB file

Borg Warner 70C 2.100 Marine Transmission Service Manual

"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

Borg Warner 70C Marine Transmission Gearbox Service Manual

"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

Borg Warner 71C 1.5 Marine Transmission Service Manual

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

Borg Warner 71C Inline V drive Marine Transmission Owners Manual

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

Velvet Drive 71C Owner's Manual

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

Borg Warner 73C marine transmission Service Manual

Service Manual

73C

 

31 pages
publ. May 1987

 

1 MB file

Velvet Drive CR2 Marine Transmission Service Manual

Service Manual

CR2

model 10-13 (similar to 71C
model 10-14 (similar to 72C)

 

17 pages
publ. - no date given

1 MB file

Velvet Drive 500 Series Marine Transmission Service Manual

Service Manual

Series 500

 

35 pages
publ. 1990

 

1 MB file

Velvet Drive 5000 Marine Transmission Service Manual

Service Manual

Series 5000

 

55 pages
publ. - no date given

 

2 MB file

Borg Warner Velvet Drive 7000 Series Marine Transmission Service Manual

Service Manual

Series 7000
Velvet Drive

21 pages
publ. December 1986

 

2 MB file

Velvet Drive Liberty Series Marine Diesel Transmission Owners Manual

Owners Manual

Liberty Series

Model A (angle down)
Model V (V-drive)

 

12 pages
January 2005

 

< 1 MB file

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