Great Planes Combat Corsair ARF - GPMA1470 - Manual (Page 12)

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3. On the side of the engine mount are reference marks.
Align the marks that are in line with the engine mounting
rails with the lines on the firewall. Align the center of the
engine with the lines on the firewall. Tack glue the mount to
the firewall.
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4. When positioning your engine, be sure the engine is
centered, but also be sure it is positioned so that the muffler
will be centered over the fiberglass cutout on the left side of
the fuselage. When you are satisfied with the position of the
engine, mark the location of the holes in the engine mount
onto the firewall.
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5. Remove the engine mount from the firewall. Drill four 1/8"
[3mm] holes though the firewall on each of the four marks.
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6. Install a 3mm blind nut on the back side of the firewall
in each of the four holes.
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7. Mount the engine mount to the firewall with four 3 x 19mm
screws, 3mm lock washers and 3mm flat washers.
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8. Drill a 3/32" [2.4mm] hole through the firewall, in line
with the throttle arm on the carburetor. Slide the white nylon
guide tube into the hole in the firewall, feeding it back to the
throttle servo. Cut the tube to length.
Refer to this photo for steps 9-12
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9. Mount the throttle servo as shown using the hardware
included with your servo.
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10. Install a screw-lock connector into the outer hole in
the servo arm.
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11. Install the throttle pushrod wire into the tube. The
Z-bend is installed in the throttle arm. Slide the opposite end
of the wire into the screw-lock connector. Adjust the servo
arm. Then tighten the set screw against the pushrod wire.
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12. Support the throttle pushrod tube with a piece of
scrap balsa or plywood.
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