O.S. Engines FS-91 II FI - Manual (Page 15)

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(4) Adjustment of Amount of Throttle Servo and Air Valve Angle
Move the throttle stick on the transmitter to slow and then full high. If there is excessive or
insufficient opening of the air valve, adjust the opening with the throttle angle adjustment
function (ATV). Confirm that the servo is not subjected to an excessive load due to tugging or
pulling. An excessive load on the servo can cause the battery to discharge and air valve to
lock.
(5) Engine Cutoff Adjustment
When using a transmitter equipped with an engine cutoff function, switch the transmitter to the
engine cutoff position and adjust the air valve so that it is fully closed at that time. Confirm that
the servo is not subjected to an excessive load due to pulling.
(6) Confirmation of Throttle and Air Valve Operation
When the stick is in the slow position: The rotor mark should be located at the slow mark of the
body. When the stick is in the center position: The rotor mark should be located at the center
position of the body. When the stick is in the full high position: The air valve should be fully
open. Recheck these positions.
(7) Lmt Setting
The movemnt of engine control has considerable significance with respect to the injection
operation. Since there may be errors in operation depending on the direction and movement,
always make sure to perform the Lmt setting when the engine is not running.
Switch on the transmitter then the receiver.
Move the throttle stick on the transmitter to the full slow position and push the Limit setting switch
to set Low Limit. At this time Buzzer sounds one note "Pi" and LED flashes green.
Then, move the throttle stick to the full high position and push the Limit setting switch to set High
Limit. At this time Buzzer sounds two successive notes "PiPi" and LED flashes red. If the setting
is failed, Buzzer sounds repeated twosuccessive notes "PiPi...PiPi..." and LED flashes red.
In this case, start again with Low Limit setting.
Memory contents remain intact even if the power is turned off.
Repeat steps 1 through 7 when the throttle linkage has been changed.