Hi all, a couple of comments worth noting about the above mentioned 20 inch Scotty. If u look closely the carburetor it does not have a choke lever but instead it has a fuel primer. This was a revision from Kirby for easier starting and put on the 1 piece chassis. Also the engine casting has the exhaust exiting to the left side instead of towards the operator.

The height adjuster knob is cast alloy not brass. Note the brass knob in the photo below has no hole for the red cap to go. I think the brass parts used were a Scott Bonner special as they use to make brassware and taps. That part of things where in about 1972. Also the clutch shaft pawl is plastic and not brass... Also these changes were around 1972.

The brass pawl being much better, as it self lubricates and the plastic pawl needs a few drops of oil before use or it ends up squealing like a pig and melts from the friction and what a bastard having to remove the engine to replace a $5 part. Another big give away is the rear roller its a 2 piece split set up the earlier 20 inch 45s had a 3 piece split rear roller but the 8 blade cylinder cutter was standard on the 20 inch Scotty.

I have attached some photos relating to the my gabble regards steve..... [Linked Image]
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