How to check 355 F1 hydraulic fluid level

Searched to no avail. New to the 355F1. How do you verify the actuator/pump fluid level (not the tranny fluid)?

Check cold?
Primed?
Warm?
Running?
Off?

Manual says nothing specific. Can anyone help?

Thanks!

-J.

 

Well, here's the answer:

With the ignition on and pump primed, level should be half way (at the seam in the tank). The dipstick is worthless.

Since no one else knew, I don't have to give my source