20
PARTS REQUIRED
THROTTLE PUSHROD
INSTALLING THE PUSHROD WIRE
q
{1} 2mm x 415mm Threaded Wire w/Z-Bend
q
{1} Adjustable Servo Connector
41
48
q
1) Slide the plain end of the pushrod wire
through the predrilled hole in the firewall, directly
behind the throttle arm, through the hole in the for-
ward bulkhead and through the hole in the forward
servo tray support bulkhead.
q
2) Remove the throttle arm from the engine and
attach the Z-Bend to the hole farthest out in the throttle
arm. Reattach the throttle arm to the engine. See
photo # 34 below.
Photo # 34
The hole in your throttle arm may be too small
for the pushrod wire to fit through. If it is, drill
out the hole using a 5/64” drill bit.
INSTALLING THE SERVO CONNECTOR
q
3) Locate a plastic servo arm that came with
your servo. Using wire cutters, remove all but one
of the arms.
q
4) Install one adjustable servo connector
through the third hole out from the center of the arm.
You will have to enlarge the hole in the servo arm
using a 5/64” drill bit so the servo connector will fit.
When you thread the nut on, don't tighten it com-
pletely. You don't want the connector loose, but you
do want it to be able to rotate without binding too
much. See figure # 6 below.
Figure # 6
After installing the adjustable servo connector
apply a small drop of Kwik Bond Thin C/A to
the nut. This will prevent the connector from loosen-
ing during flight.
q
5) Plug the throttle servo lead into your receiver
and turn on the radio system (please refer to your
radio system manual for complete instructions about
connecting your system).
q
6) Check to ensure that the throttle servo output
shaft is moving in the correct direction. When the
throttle stick is moved forward from idle to full throttle,
the servo should rotate counterclockwise.
q
7) Slide the adjustable servo connector/servo
arm assembly over the plain end of the pushrod wire.
Position the throttle stick and the throttle trim at their
lowest positions.
q
8) Manually push the carburetor barrel fully
closed. Angle the servo arm about 45º back from
center and attach the servo arm to the servo. The
servo arm should be pointing toward the fuselage
side. With the carburetor barrel fully closed, tighten
the set screw in the adjustable servo connector.
q
9) Remove the excess throttle pushrod wire us-
ing wire cutters and install the servo arm retaining
screw. See photo # 35 below.
Photo # 35
ADJUSTING THE THROTTLE LINKAGE
q
10) When your throttle linkage is adjusted prop-
erly, the carburetor barrel should be fully closed when
the throttle stick and the throttle trim lever are at their
lowest positions. Moving the throttle trim up should
open the carburetor barrel about 25% - 30%. Mov-
ing the throttle stick all the way forward should open
the throttle barrel completely. All of these movements
should be done without any binding in the linkage.
Sometimes the servo will bind at either the fully closed
and/or fully open throttle positions. If this happens,
