❏
1. Cut the tabs from the engine mount. Install the engine
mount (inverted) to the firewall with four 8-32 x 1-1/4"
[32mm] socket head cap screws, #8 flat washers and #8
lock washers.
❏
2. Position the engine on the mount so the distance from
the firewall to the front of the thrust washer measures 6-1/4"
[159mm]. Mark the location of the engine on the mount. The
Great Planes Dead Center
™
Hole Locator (GPMR8130)
works well for this. Drill through the marks you have made
on the engine mount with a #29 or 9/64" [3.6mm] drill bit.
Tap each of the holes with an 8-32 tap.
❏
3. Install the engine onto the mount with four each, 8-32
x 1" [25mm] socket head cap screws, #8 flat washers and
#8 lock washers.
❏
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.
Install the Engine & Throttle Servo
17
