18
RADIO INSTALLATION 
Follow these guidelines to properly mount the servos, receiver and battery. 
alignment tab on the battery, switch and servo connectors is oriented correctly and “keys” 
into the corresponding notch in the receiver or connectors before plugging them in. When unplugging 
connectors, never pull on the wires. Always pull on the plastic connector instead. 
to extend the length of the servo lead. Additional Futaba extension cords of varying lengths are available 
from your hobby dealer. Always use an extension of the proper length. Avoid plugging multiple extensions 
together to attain your desired length. If distance is greater than 18” or multiple or high current draw servos 
are being used, use Futaba Heavy-Duty servo extensions. 
Servo
Rubber
grommet
Servo
Rubber
grommet
       rubber grommets.
Do not over tighten the screws. No part of the servo casing 
should contact the mounting rails, servo tray or any other part 
of the airplane/helicopter structure. Otherwise, vibration will be 
transmitted to the servo, causing premature wear and/or servo 
failure.
The numbers indicate how many degrees each arm is “off” from 90 degrees to correct for 
minute manufacturing deviations from servo to servo. 
            
the arm that will be perpendicular to the pushrod when placed on the 
servo.
arms do not bind or contact each other. Also make sure the controls do not require excess force to operate. 
If there is an objectionable buzzing sound coming from a servo, there is probably too much resistance in the 
control. Find and correct the problem. Even if there is no servo damage, excess battery drain will result. 
mounting plate from the receiver on/off switch as a template for the cutout and screw holes. Mount 
the switch on the side of the fuselage opposite the engine exhaust, and where it won’t be inadvertently 
turned on or off during handling or storage. Be certain the switch moves without restriction and “snaps” 
from ON to OFF, and that the cutout allows full motion of the switch in both directions. 
frame between the switch and switch cover and securely tighten the screws. Different models might require 
different installations. If so, please follow the model's instruction manual.