Hobbico Spectrum Assembly Instructions Manual page 15

Slightly bend the pushrod wires as necessary to
allow for free movement.
14. Center the elevators and elevator servo and
mark the pushrod where it crosses the servo arm.
Enlarge the servo horn hole with a 5/64" [2mm]
drill bit.
15. Make a 90-degree bend in the pushrod on
your mark, then insert it through the enlarged hole
in the servo arm. Secure the wire in place with a
nylon pushrod keeper. Trim the excess wire 1/16"
[1.6mm] above the pushrod keeper. Use a straightedge
to line up the elevators. Adjust the clevises if
necessary if the elevators are not aligned.
16. Attach the throttle pushrod connector to the
throttle servo arm. The 2mm washer and 2mm nut
are located on the bottom of the servo arm. Use
threadlock on the nut to prevent loosening.
17. Install the throttle pushrod into the pushrod
tube. Connect the pushrod to the throttle arm of the
engine using a "Z" bend. Bend the throttle pushrod
as necessary to reach the throttle arm without
binding. When satisfied with the fit, insert the pushrod
through the pushrod connector on the servo.
18. With the radio on move the throttle trim and
control stick to the fully closed position, by pulling
them back (or downward) all the way. Manually
close the throttle on the carburetor completely.
Tighten the 3mm x 6mm screw on the pushrod
connector. Check throttle operation with the radio
and make adjustments to the linkages as
necessary for smooth operation. Use the appropriate
holes in the servo and throttle arms to provide the
correct amount of throttle movement and to
prevent the servo from binding at its end points.
Cut a notch in the plywood former to support the
pushrod tube inside the fuselage as shown in the
photo. Use threadlock on the screw to prevent
loosening.
15