Did any of the F14 - F15 Parts manual help? What about the F5, F6, F7 Parts Manual? I see the nice gears you had fished out.
Parts Manuals have those nice part diagrams showing how things go together.
Karl made a nice OPS manual for your machine. You will need to just cut-n-paste in a web translator of Czech Republic to English.
For Tractor Ernie, I did translate the F235 earlier this year. Karl has made so many of these OPS manuals for the gray market tractor industry.
See the OPS F-FX 16 manual attached. Under 2Mb.
Yanmar Tractor Owners Group. A valuable source for owners of Yanmar tractors.