want to replace th efluid, i see the reservoir, havent removed intercooler so can just see the piping of the hydraulic lines, how do i drain it out ?

cheers......

 

I use an old hydrometer, but if you havent got one of them you can use the old scouser method of sticking a pipe in it and syphoning it..or use a load of kitchen roll wrapped up..but wash your spills off with water.
Then just refill with fresh fluid, this avoids bleeding the system but doesnt get rid of the fluid in the pipework and the slave itself...if you want to do that you will have to bleed at the slave.