The two RUN capacitors shown above might be combined in one "can" but function's still the same. If the power is OFF, the capacitor(s) will probably discharge, but you can (again Power Off) take an insulated tool like a screwdriver with a plastic handle and short their terminals. Then you can handle them.
If cap looks damaged, you know it's bad. Otherwise, some meters will test them, or replace with a known good one.
Your A/C may or may not have the start assist device. If you want to add one, the SUPCO SPP6e is recommeded. It's a smart device, not the simple PTCR type.