For this step, disconnect the motor wires from the ESC. This will prevent the motor from accidentally spinning.Do not rely on the Throttle Hold function.
This step is only necessary for collective pitch helicopters like the ECO 8/16 and Logo 10/16/20. This step is not necessary for fixed pitch helicopters like the Piccolo FP and the Corona.
You should have a pitch gauge, either from the manufacturer of your heli designed specifically for your heli or a general-purpose helicopter pitch gauge.
Disconnect the heli motor from the ESC. Put some electrical tape on the exposed connectors to insulate them so they will not short out against each other or against other electrical components.
Do NOT use the throttle hold instead of disconnecting the motor battery. Some transmitters (Futaba 9C) seem to have a bug where if you adjust the pitch with the throttle hold enabled, it does not save the settings correctly. So don't use throttle hold. Disconnect the motor wires instead.
Put the pitch gauge on the helicopter following the pitch gauge instructions.
Turn on the transmitter.
Connect the heli battery.
For a CCPM helicopter:
Adjust the blade pitch by adjusting the PITCH option on the swashplate mixing menu (SWASH AFR on Futaba 9C).
For a non-CCPM helicopter:
Adjust the blade pitch by adjusting the pitch servo endpoints.
For both helicopter types:
For hover practice, adjust the blade pitch so the pitch range goes from 0 degrees at zero throttle to about 8 degrees at full throttle.
For normal (non-inverted) flight, adjust the blade pitch so the pitch range goes from -3 degrees at zero throttle to 10 degrees at full throttle.
Put the pitch gauge on the other blade and adjust its blade pitch too.
Set the throttle hold and idle-up pitch curves to match your normal mode pitch curves. This will prevent the heli from hopping when switching between normal, idle-up and throttle hold modes.
If you have the Futaba 9C, it defaults to putting a weird bump in the middle of the pitch curve. This bump can be removed by disabling the Hovering Pitch option.