Emax 25 oil leak

[Raiderfan4life]

Looking for any suggestions or help with my 2015 Mahindra emax 25 hst. I have a leak coming somewhere from the front of the transmission. It's hard to tell exactly where so I started to take the black plastic cover that's over the driveshaft but wasn't sure how to get the deck adjustment knob off. I did notice a spring clip at the bottom of the shaft but wasn't sure if that needs to come off. Anyone have a service manual to share or where I could get one. I found a digital one online for $42. Seems to be a good buy. Any help would be appreciated.