Futaba 10J - Manual (Page 51)

This function returns the trim of the model
memory in use to the center (initial state).
However, at this time, sub trim and trim step
amount are not reset.
The amount of trim change per step can be
changed between 1 and 40 according to the aircraft
capacity and trim application.
Set it to match the application. With ordinary
aircraft, a setting of about 2 to 10 should be fine.
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