Nice looking "Round Back" tiller you have there Andrew
One thing that you should be aware of is that the round back tillers are LIGHT DUTY tillers, and are meant for previously worked ground.
They can handle a limited amount of 'virgin ground', but I wouldn't do that too often, and only on a very small plots.
Like Iain said, don't store it 'hitch down'. Keep it level or pointing up.
That tiller would be useable on a 600 as long as you had the shorter prop shaft.
One other bit of advice. With the one piece prop shaft, mounting it on a tractor requires the proper swear words muttered (or shouted as the case may be) in the proper sequence, a good alignment of the stars, and the sacrifice of at least one goat and sometimes two.
Is the belt shield on the PTO 'different' than the standard tube frames?
The 1978 G14 and G11 used a different shield that incorporated a PTO brake as opposed the shield used on previous years tube frames.
Only one of my G11s has the proper PTO sheave, and it was missing the shield.
Here are some pics of the PTO and a NOS shield that I found. The rod you see hanging down in the PTO pic is used to activate the brake when the PTO is disengaged. I'm also including a page from the tube frame service manual that discusses the adjustment of the PTO brake.
There were a number of IH "Red" colors. You would want one of the earlier ones that are a brighter red. One similar to what was used on the letter series Farmall tractors.
... If you want to put it on the HT20D or HDT1000 I would have thought that it would not be too difficult to get the correct length shaft made, assuming you have the ends.
It is hard to see how it fits on the tractor from the auction pictures. It would be great if you can post some pictures once you have it on the tractor.
Iain
It uses the same shaft as the tillers.
As for mounting, it looks like it uses the three threaded holes circled in this pic:
... The mower is a woods if I am corrected, they also fit Bolens Large Frame tractors if they had rear PTO ...
That would depend on which rear PTO.
Bolens had four rear mounted PTO kits for the Large Frames:
18082 - 2000 RPM
18094 - 540 RPM
18095 - 540 RPM
18906 - came with gears and shafts so that you could have either 540 or 1000 RPM.
The 18082 is the only one that can be used with a 3-pt hitch, as the other three mounted using the same mounting tabs that the 3-pt hitch used, so it was one or the other, not both.
I see that you got the lift link for the tiller. That's something that seems to get lost and you see guys looking for them all the time.
I don't see the drive shaft, but I assume that you got that as well?
That's the one we call the "Round Back". It's a light duty tiller meant to till ground that has been previously worked. It can work virgin ground, but I wouldn't make a habit of it and only on a small plot.
From what little bit I can see of that plow on the 600, I don't think that it's a Brinly.
As for a hitch, the Brinly and Ohio Steel sleeve hitches made for the Bolens tube frames will fit on ALL of the tube frames no matter what year or horsepower.
As we say here in the States, it will turn on a dime and give you 9 cents change
At full lock, the front and rear tires have about 1" clearance between them.
The LKs came in 5 and 6 Hp versions, all of which were manual start. The early ones in 1964-66 (models 910-01 and 910-02) had a 6 Hp Briggs. In 1966 there was also the model 911-01 with a 6 Hp. Lawson engine.
From 1967-1970 they all had 5 and 6 Hp Lawson engines.
I have it's 'big brother' a 1964 Estate Keeper 7, and they are a lot of fun to operate. Takes a little getting used to it, but after than it's loads of fun.
The are also great mowers as the deck is out front and cuts the grass before any wheels run over it.
While you can't classify them as garden tractors, there was a front blade available for the LKs, and the EKs had a snowcaster available in addition tot he blade.
My EK7 with a 32" snowcaster and with a 30" cylinder mower:
:D 
Rejuvenating my Bolens Tiller
in Ride On's
Posted · Edited by OldBuzzard
Nice looking "Round Back" tiller you have there Andrew
One thing that you should be aware of is that the round back tillers are LIGHT DUTY tillers, and are meant for previously worked ground.
They can handle a limited amount of 'virgin ground', but I wouldn't do that too often, and only on a very small plots.
Like Iain said, don't store it 'hitch down'. Keep it level or pointing up.
That tiller would be useable on a 600 as long as you had the shorter prop shaft.
One other bit of advice. With the one piece prop shaft, mounting it on a tractor requires the proper swear words muttered (or shouted as the case may be) in the proper sequence, a good alignment of the stars, and the sacrifice of at least one goat and sometimes two.
Getting everything lined up CAN be a chore
:D 