Have a shufties here
https://qso365.co.uk/2011/03/replacing-the-schottky-diodes-in-my-ft-847
I haven't compaired the FT-847 & FT-767 circuits but Yaesu were never ones to re-invent the wheel so I would be surprised if the section in question was radically diffferent. The BAT85 pin diodes used are still readily available from Mouser and probably elsewhere too.
Mike