FUTABA GV-1 Instruction Manual page 6

The center of the sensor is
different from the center of
the sensor case so be careful
when mounting the sensor.
(Setting method: Page 16)
When using the PCM1024Z transmitter
When using the condition hold (CHD) function, always set the
throttle servo maximum operating point (MAX THR) to 20% or
less.
Depending on the conditions, this setting will turn on the governor and
prevent the engine from exceeding the set speed even when condition
hold is set.
(Governor ON conditions)
The following conditions must be performed, to turn on the
governor:
-Governor ON/OFF switch set to ON position.
-Throttle stick set to 20% or more from slow position.
-Engine speed raised to 70% or more of set speed.
Center of sensor
is offset.
Sensor
case