In 1963 they changed the design of the clutch pedal, brake pedals and running boards on the MF50. This resulted in a higher clutch pedal compared to the earlier design. If you have the later design, there is a pin you can move to a different hole in the clutch linkage that will leave the second stage clutch constantly engaged and will lower the pedal to a more comfortable position. If you aren't doing any PTO work you can leave it there most of the time. The first picture shows a 1964 MF50 clutch pedal height with the pin in the two stage operation position. The second picture is a 1959 MF50. You can see the difference in height compared to the top of the transmission housing. I like the older design much better.