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E-flite Cessna 150 Aerobat 250 ARF Assembly Manual
10. Place the servo cover in position on the wing.
Use a pencil to mark the locations for the four
mounting screws.
11. Use a pin vise and 1/16-inch (1.5mm) drill bit
to drill four holes for the mounting screws. Use care
not to accidentally puncture the covering on the top
of the wing or to push too hard on the mounting
rails, as this could break them.
12. Use a #1 Phillips screwdriver to thread a 2.5mm
x 8mm washer-head self-tapping screw into each
of the holes to cut threads in the surrounding wood.
Remove the screw before moving to the next step.
13. Apply 2–3 drops of thin CA in each of the holes
to harden the surrounding wood. This will harden
the threads so the screws do not easily strip the
surrounding wood.
14. Use a #1 Phillips screwdriver and four 2mm x
5mm self-tapping screws to secure the cover to the
wing. Note that the servo arm is aligned with the
aileron control horn and the hole in the mounting
plate is facing forward.
