Inter-drain 6050 HT

First time poster. I'm working on a inter-drain 6059 ht trencher and I'm coming behind another person some hydraulic lines were not marked and I have put some where I think they go but I have a few lines with no connections one is a feed line and another is small. I can't find any manuals on the machine that can help me I have also contacted the manufacturer and company the machine was bought through and no luck.

Any help would be appreciated

Bobby

Inter-drain 6050 HT