I think Max is spot on with his observation of a secondary skirt
G'day
wce and
MaxYes, Maxwestern is like a digital hard drive

.... he has a great memory and
he certainly keeps me honest, and he shares my same view ... that
ODK is about dispelling myth with good argument and evidence.
Yep,
Fastcut 287 derived from engine type and Kirby-Tecumseh model.
I wonder whether the 4-stroke was a
Fastcut 430? Who knows!
Were the KAV 74 and KAV 87 engines the same vintage?
Well, best guess, they were. They shared the same Operating Manual...
Cheers---------------------------
Jack