When you put the 40 MF in, does the compressor start up OK? A 40 sounds right, as I do not have access to that compressor info. If you think it is a concern, then you can put a hard start kit on it. If it ramps to speed quickly, chances are the 40 is OK. The 10 is used on the condenser fan motor. You would need to look at the name plate of the fan motor to see what it requires.