I am assuming this tractor is a MT210(D). Do you have a front end loader
on this tractor? If so does the front loader work? If you do not have a
loader on this tractor you should check to see if you have hydraulic pressure
to the rear lift. Follow the pressure line from the hyd. pump to the rear lift top.
Open the banjo bolt a few rounds to see if you have pressure with the tractor running at idle so it doesn't splatter everywhere. If you do not
have pressure, it could be a clogged screen filter on your left side (cylindrical
tube with cap)or a bad pump. If you are getting pressure(tighten banjo bolt or shut tractor off to tighten bolt) than you have some debris stuck inside the lift control valve body.
There is no parts cost to fix this if you are getting pressure to the rear lift.
The valve body just needs to be cleaned. There's just alot of disassemling.
If you would like for us to walk you through it, you can contact us at 903-603-9171.