Having two caps would lead you to believe it's a start and run cap motor, but there's a chance one is a noise suppressor. I'd start by testing them to see if they're both either start or run caps, and to see if they're any good. From A.O.Smith:
Capacitor Check (Start or Run)
• Set ohmmeter at Rx 1K.
• Slip a heavy piece of paper between points on the switch.
• Discharge capacitor by touching the two terminals simultaneously with the blade of an insulated handle screwdriver
• Attach one probe to each terminal. Ohmmeter needle should move rapidly to right then slowly drift to the left. (Low ohm reading to high ohm reading.)
• If digital meter is used, readings should start low and rapidly increase to maximum value.
• Replace capacitor if bad.
TIP: The replacement capacitor must be the same MFD as the original. However, if the same voltage rating is not available it is acceptable to use the next higher voltage. Example; if a 370 volt unit is not available, use the next rating, 440 volt.
If I'm reading the manual
right, the motor is 1 HP. A start cap of 120-150 MFD up to 500 MFD can be used, depending on the start up torque load, so getting a start cap that works isn't going to be much of a problem- you basically are looking to get the load spun up in </= 2 seconds.
As for a run cap, see that it actually needs/uses a start cap to begin with. A 30 MF run cap is going to be in the ballpark. IIRC 1 HP motors generally don't use run caps (seen more on 1-1/2 HP-up)- but I'm sure there are exceptions.