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#84694 - 21/04/17 01:40 PM KIRBY - HK25 and HK30 Engines  
CyberJack  Online Content
Forum Historian
Joined: Nov 2013
Posts: 4,528
Tasmania
Hello ODK History Lovers
Kirby engines were a popular choice for lawnmower manufacturers in the 1960s
and 1970s. Made under licence from North American Tecumseh, they would power
Australian-made rotary and reel mowers in vertical and horizontal shaft
configurations.

This article discusses the most popular small horizontal shafts the HK25 and
HK30 engines. Many enthusiasts would know these engines powered the early Victa
Imperials
, Rover Thoroughbreds, and Scott Bonnar Model 45s.

[Linked Image]
[Linked Image]

TO BE CONTINUED ...


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#84695 - 21/04/17 02:03 PM Re: KIRBY - HK25 and HK30 Engines [Re: CyberJack]  
CyberJack  Online Content
Forum Historian
Joined: Nov 2013
Posts: 4,528
Tasmania
PART TWO - Specification
The small HKs were 125cc with alloy crankcase and cylinder.
The cylinder had a alloy cast iron or sintered iron sleeve.
They were mechanically governed and had a ball bearing on the PTO side.
These were quality engines, many still being used regularly today.

[Linked Image]
[Linked Image]
[Linked Image]


Attached Files
kirby_hk_specification.pdf (15 downloads)
KIRBY TECUMSEH HK30 Specification

#84696 - 21/04/17 02:08 PM Re: KIRBY - HK25 and HK30 Engines [Re: CyberJack]  
CyberJack  Online Content
Forum Historian
Joined: Nov 2013
Posts: 4,528
Tasmania
PART THREE - Operating Manual
This 1970 Operating Manual is from my collection and covers the HK25, HK30
and HHK40
. As always, it is available as a download for personal use.

[Linked Image]
[Linked Image]
[Linked Image]


Attached Files
kirby_hk_operating_manual.pdf (14 downloads)
KIRBY OPERATING MANUAL - HK25 HK30 HHK40

#84697 - 21/04/17 02:13 PM Re: KIRBY - HK25 and HK30 Engines [Re: CyberJack]  
CyberJack  Online Content
Forum Historian
Joined: Nov 2013
Posts: 4,528
Tasmania
PART FOUR - Parts Manual Scott Bonnar
This mid-1970s Parts List is from Scott Bonnar. It is a handy list because
it includes both the SB and Kirby part numbers. As always, it is available
as a download for personal use.

[Linked Image]
[Linked Image]



Attached Files
kirby_hk_sb_parts_manual.pdf (18 downloads)
KIRBY HK25 HK30 PARTS LIST (SCOTT BONNAR)


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