Adjsut fan speed on Armstrong Furnace

[Pkirkby]

Hey everyone, I'm hoping to figure out how to adjust my fan speed on my Armstrong Furnace (model# G2D95CT060V14B-2A). I can't find anything related to this exact model, and it seems to be significantly different than most tutorials I've seen.

At the very least I could use a shove in the right direction. I've included a few pictures.

[Hgye]

It usually says how on the wiring diagram.