JR XF421EX, Manual

Page: 11 / 32

11
XF421EX MANUAL • CHAPTER 1: Transmitter Controls
To adjust the control stick length, use a 2mm Allen
wrench to unlock the set screw located inside the
end of the control stick. Turn the set screw
counterclockwise to loosen it, then turn the knurled
portion of the stick to adjust the length.
Counterclockwise will lengthen the stick and
clockwise will shorten it. After the control stick(s) has
been adjusted to suit your flying style, tighten the set
screw.
CONTROL STICK LENGTH ADJUSTMENT 1.4
LOOSEN
TIGHTEN
SET SCREW
CHAPTER 1 : Transmitter Controls
continued
TRANSMITTER REAR 1.3
Note: Your transmitter has a 5-year lithium battery
to protect your pre-programmed data against main
transmitter battery failure. If your system reads 0.0
volts, or has an unfamiliar display (service mode) or
your data resets to the factory defaults, return your
transmitter to Horizon Service Center (see page 28)
for lithium battery replacement.
BATTERY CONNECTOR
Use caution when disconnecting/removing the
transmitter battery pack as if the connector is not
properly disconnected, damage to the connector
and/or the radio system can result.