Top Flite TOPA0970 - Manual (Page 18)

18
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6. Oil the tail wheel axle and install the tail wheel.
Secure it with a 3/32" [2.4mm] wheel collar and a 4-40
set screw. Be sure that the tail wheel rotates freely.
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7. Cut one of the 36" [914mm] pushrods to 24"
[610mm] to make it easier to work with. Thread a 2-56
nut and clevis onto the pushrod. Slide a silicone clevis
retainer onto the clevis. Install the clevis onto the third
outer hole of a control horn. Insert the pushrod into the
rudder outer pushrod tube. Align the holes in the control
horn over the rudder hinge line and mark the mounting
holes onto the rudder. Be sure you are installing the
control horn onto the plywood mounting plate.
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8. Drill 1/16" [1.6mm] at your marks. Do not drill all
the way through the rudder. Thread a #2 x 3/8" [9.5mm]
self-tapping screw into each hole and back it out.
Apply a drop of thin CA to each hole. When the CA has
hardened, install the control horn using two #2 x 3/8"
[9.5mm] self-tapping screws. Slide the silicone clevis
retainer to the end of the clevis and tighten the 2-56
nut against the clevis with threadlocking compound.
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9. Install a pushrod and control horn onto each
elevator as was done with the rudder. The clevises
should be installed in the outer holes of the control
horns.
INSTALL THE ENGINE
AND FUEL TANK
The engine shown in this section is an O.S. FS-
91 Surpass II 4-stroke engine. The installation of a
2-stroke engine is the same procedure.
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1. The fuel tank can be assembled as a two line
system consisting of a vent (pressure) line to the
muffl er and a carb line. Filling and emptying of the
tank would need to be done through the carb line, or
an optional fuel fi ll valve (not included). The tank can
also be assembled as a three line system having a
vent line, carb line, and fi ll line. If installing a fi ll line,