APC EP Zero ARF Instruction Manual download pdf (Page 21)

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4. Use a sharp hobby knife or small sanding drum to

remove the plastic between the dummy engine cylinders.

Leave a 20mm wide ring around the edge of the dummy

engine. Use sand paper to remove the paint from the lip of

the dummy engine. Clean the lip using denatured alcohol.

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5. Sand the inside of the cowl near the rear lip and where

the dummy engine will mount. Clean the surfaces you just

sanded using denatured alcohol.

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6. Fit the dummy engine inside the cowl. Position it as far

forward as possible, aligning the rocker arm covers with the

blisters on the cowl. Apply epoxy along the seam between

the dummy engine and the cowl.

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7. Temporarily attach the plywood cowl ring to the fuselage

with four 4-40 x 1/2" [13mm] socket head cap screws, four

#4 lock washers and four #4 flat washers. Use a 3/32" ball

wrench (GPMR8002) to tighten the screws.

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8. Slide the cowl over the cowl ring and center the motor

prop adapter in the dummy engine. Install a propeller to

check that it rotates without rubbing on the cowl or dummy

engine. Make any adjustments to the dummy engine or cowl

so that the propeller spins freely. Note: The cowl ring should

be at the back edge of the cowl when everything is positioned

correctly.

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9. Remove the cowl and the cowl ring. Cut the fuselage

bag (you did keep the bag, right?) 12" [305mm] from the

closed end. Slide the bag over the front of the fuselage. A

hole will need to be cut for the motor. Also cut four small

holes for the cowl ring screws. Reinstall the cowl ring with the

4-40 x 1/2" [13mm] socket head screws.

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APC EP Zero ARF Instruction Manual Page 21