Great Planes Super Stearman 1.20 ARF - GPMA1350 - Manual (Page 21)

❏
4. Drill a 3/16" [4.8mm] hole through the firewall in line
with the throttle arm on the carburetor.
❏
5. Locate the 24" [610mm] gray plastic pushrod tube and
cut it 12-3/4" [324mm] in length. Sand one end of the tube
with 220-grit sandpaper. Insert the tube into the firewall.
Glue the roughened end of the tube flush to the firewall.
❏
6. Place your throttle servo into the servo tray as shown.
Drill a 1/16" [1.6mm] hole through each of the mounting
holes. Remove the servo. Then install and remove a servo
mounting screw into each hole. Apply a couple drops of thin
CA into the holes to harden the threads. When the glue has
cured permanently, mount the servo to the servo tray.
❏
7. Cut the 1" [25mm] threaded end from the .074" x
17-1/2" [445mm] throttle pushrod wire. Install the wire into
the tube and attach it to the servo horn arm with a Faslink.
Use the same technique used for the ailerons.
❏
8. Attach the pushrod wire to the throttle arm with a brass
screw-lock connector, nylon retainer ring and a 4-40 x 1/4"
[6mm] socket head cap screw.
21