That misfire it had when it is pulling on the sled... I'm not a mechanic, but could that be a dicky injector (I believe it's called an "atomizer" on engines like this) or injection pump?
Interesting you should mention that, so in the time between this video and now he has opened up the combustion chamber and found the pre- combustion chamber port badly distorted and burned open. This was the reason for the uneven firing. He swapped the chamber and it runs good now.
Was this tractor once brought to Canada to work on the fields or was it meant to be a star at old timer demonstrations? This question comes from Germany.
This tractor was exported to Australia when it was new, then discarded in the outback when it was retired. The fellow who owns it now brought it to Canada and has restored it internally only, deliberately leaving the outside in “as found” condition.👍
