Where is hydraulic fluid drain on TU205?

[terraformer]

I would like to change the fluid. I can see the filler above the 3pt hitch and I think the dipstick is under the seat but can't identify the drain. I have a generic iseki manual but it isn't clear.
Thanks

 

[suntreemcanic]

I have an older Iseki TX1500F and my dip stick is also under the seat and it you look straight down from there at the low point of the gear case there is a horizontal plug (bolt head). If you remove that it drains the gear case and hydraulic oil.

 

[Kays Supply]

Also check the low point at each rear axle. I am not sure which model , but one has gear reducers at the axle and a drain on each side.