huber F1500 trans help

I just got a Huber F 1500 with shift cables missing with speed control missing can someone help I thank I finger out to make new shifter cable but trying to figer out what goes were and how speed control works the unit is in good shape but someone took cables off shafter box to replace but could not find I am trying to configer some pto cable to work but I can not seem to get it all to work 100% because how high I have to get it to move I have springs broken so please if someone could help with info or tell were I can find a service book I would buy one thank any info wold help I like to keep old steel working but this one is kicking my but- thank you

huber F1500 trans help