User Manual

26 Hangar 9 P-51D Mustang Sport 40 Assembly Manual
 Step 2
Remove the foam shipping blocks protecting the airframe
from damage.
 Step 3
Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the
hole in a 180-degree servo horn that is 5/8-inch (15mm)
from the center of the arm.
 Step 4
Use side cutters to remove the excess arm from the horn so
it does not interfere with the operation of the servo.
 Step 5
Use the radio system to center the aileron servo. Install the
arm so it is perpendicular to the servo center line as shown.
 Step 6
Secure a 9-inch (228mm) servo extension to the servo lead
using dental floss, string or a commercially available fastener.
 Step 7
Remove the servo cover from the wing. Position the servo
on the cover so the servo horn is centered in the slot in the
cover as shown.
Note: The right and left servos will have the servo arm
facing different directions. If the servo does not rest
fully on the cover, you may need to rotate the servo
horn 180-degrees.