I have a MF275. Great tractor.
As you are sitting in the seat:
Left pedal is the clutch. Two pedal on the right are for the brakes. The pedal on the right rear of the foot board is the traction lock.
Levers on the right of the seat are likely as follows: The closest to the seat is probably for a remote hydraulic cylinder that will have hookups on the back of the tractor. The other 2 are for the 3 point hookup. First is to raise and lower the 3 point. The last one is to set the draft control for the 3 point.
On the right side below the seat is also a slide control to adjust how fast the 3 point raises and lowers.
On the left side under the seat will be a lever to control the pto.
Gear shift levers are out of the top of the transmission. Left lever will be numbered gears and reverse. Right lever is high and low.
That is how mine is setup. A picture would be helpful to determine what you have and don't have compared to mine.