Need help?


Search OutdoorKing-Forum by entering Key Words Below



Who's Online Now
1 members (Dandare), 1,833 guests, and 273 robots.
Key: Admin, Global Mod, Mod
Online Spare Parts


Online Store


Newest Topics
Cone siezed on PTO Shaft
by ToryC - 12/11/25 02:18 PM
Kirby HK30 Governor oil leak
by Magilla - 12/11/25 12:31 PM
Victa Power Torque Starter Assembly ST12811A
by cactus155 - 11/11/25 12:11 PM
Tanaka TBC2251
by kenny_t - 11/11/25 10:35 AM
Star Poducts cylinder mower
by sparksy - 08/11/25 11:18 PM
My McCulloch M T1255 CLS Line Trimmer
by mice_elf - 07/11/25 04:33 PM
Rover Muncher stops & starts. Any ideas?
by Widget - 03/11/25 08:12 PM
Topic Replies
Victa Power Torque Starter Assembly ST12811A
by cactus155 - 13/11/25 02:51 PM
Kirby HK30 Governor oil leak
by Magilla - 12/11/25 09:10 PM
Cone siezed on PTO Shaft
by ToryC - 12/11/25 02:18 PM
Lower Crank Seal - Sprint 35
by AVB - 12/11/25 10:13 AM
Tanaka TBC2251
by maxwestern - 11/11/25 07:39 PM
GCV 160
by NormK - 11/11/25 08:22 AM
Star Poducts cylinder mower
by maxwestern - 10/11/25 05:52 PM
Gear Head Maintenance
by mice_elf - 08/11/25 06:21 PM
Using Roundup At Half Rates On Common Couchgrass
by mice_elf - 07/11/25 06:12 PM
My McCulloch M T1255 CLS Line Trimmer
by mice_elf - 07/11/25 04:33 PM
Previous Thread
Next Thread
Print Thread
Rate Thread
Hop To
Joined: Nov 2013
Posts: 6,938
Likes: 308
Forum Historian
Hello ODK history lovers

The small Cooper air-cooled 4-stroke engines were licensed copies
of the North American Johnson Iron Horse. Cooper Engineering –
owned by the giant Sunbeam Corporation – would make a few models
under licence in Australia.

The designs of these small ‘sloper’ engines date to the 1930s,
when the Johnson Outboard Motor Company,

[Linked Image]

In Australia, production probably began during WWII, when small
engines were needed to power military generators and water
pumps, and the like.

Post War, these Cooper engines formed part of the Cooper range
of industrial engines, and were mainly used on agricultural machinery,
but some AUS mower makers did use them. These makers include
the Grasshopper reel mower. The Marino Mowall, and the Cooper
Rotary Slasher.

TO BE CONTINUED …

Attachments
1950s_platypus.jpg (258.75 KB, 60 downloads)
1950s_mowall.JPG (141.22 KB, 59 downloads)
1950s_cooper.jpg (73.61 KB, 60 downloads)
Portal Box 6
Joined: Nov 2013
Posts: 6,938
Likes: 308
Forum Historian
PART TWO – Operator Manual
This manual is from my collection and it is mostly in good condition.
It is beautifully illustrated and of ‘the old school’ … of covering use,
maintenance and parts.

This was a time when makers took pride in giving their customers
comprehensive information.

I have divided this manual into two parts: - Use and Maintenance,
and then the Parts section. Here I provide a copy of the first part.

As always, I provide a quality scan available to members for personal use.

[Linked Image]
[Linked Image]

Attachments
cooper_rv_tp_thumbs_01.jpg (48.21 KB, 57 downloads)
cooper_manual_rv_pt_01.pdf (5.82 MB, 16 downloads)
COOPER MANUAL RV & PT 4-CYCLE PART 01
Joined: Nov 2013
Posts: 6,938
Likes: 308
Forum Historian
PART THREE – Parts Manual
I have divided this manual into two parts: - Use and Maintenance,
and then the Parts section. Here I provide a copy of the second part.

As always, I provide a quality scan available to members for personal use.
Here is the parts section: -

[Linked Image]
[Linked Image]

Attachments
cooper_rv_tp_thumbs_02.jpg (41.12 KB, 272 downloads)
cooper_manual_rv_pt_02.pdf (4.74 MB, 11 downloads)
COOPER MANUAL RV & PT - PARTS
Joined: Nov 2013
Posts: 6,938
Likes: 308
Forum Historian
[Linked Image]

The Cooper Rotary Slasher: -
https://www.outdoorking-forum.com.au/forum/u...per-rotary-slasher-c1954.html#Post100320

[Linked Image]
Would you like to comment?
Simply create a new topic in The Old Soap Box HERE.


Moderated by  Alan M, CyberJack, Mr Davis 

Link Copied to Clipboard
Forum Donation
These Outdoorking Forums have helped Thousands of people in finding answers to their equipment questions.

If you have received help, please consider making a donation to support the on-going running cost of these forums.

November
M T W T F S S
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Newest Members
ChadTimmo, leslloyd, gkov3, The Umpire, cornflakes
17,666 Registered Users
Forum Statistics
Forums145
Topics13,019
Posts107,018
Members17,667
Most Online16,069
Sep 19th, 2025
OutdoorKing Showcase
20 Bucks from FB Marketplace
20 Bucks from FB Marketplace
by Return Rider, February 20
Victa Cortina 2 Shed Find
Victa Cortina 2 Shed Find
by Return Rider, January 25
My Rover Baron 45
My Rover Baron 45
by Maxwell_Rover_Baron, April 16
SHOWCASE - Precision Mowers - 2021
SHOWCASE - Precision Mowers - 2021
by CyberJack, April 14
SHOWCASE – Atco Rotary – Paul C - 2020
HOME |CONTACT US
Powered by UBB.threads™ PHP Forum Software 8.0.0
(Release build 20240826)
Responsive Width:

PHP: 8.3.26 Page Time: 0.054s Queries: 26 (0.040s) Memory: 0.6395 MB (Peak: 0.6824 MB) Data Comp: Zlib Server Time: 2025-11-13 16:39:30 UTC
Valid HTML 5 and Valid CSS