FUTABA 12K Instruction Manual page 89

The Idle Down function lowers the engine to
its idle position. Like throttle cut, this is usually
stick at idle. The action is not functional at high
throttle to avoid accidental dead sticks. The
switch's location and direction must be chosen, as
it defaults to NULL.
RTN
HOME/EXIT
RETURN
Idle down setting procedure
*The display blinks.
*For a detailed description of the setting method, see [Switch
Setting Method] at the back of this manual.
<Push Dial>
* When a minus rate is input, an offset is applied at the high
side.
*Maximum offset amount is near maximum slow.
* When the RTN button is pushed for one second, the offset
rate is reset to the initial value.
<Functions of Linkage Menu>
89