Great Planes Cosmic Wind Minnow 60 ARF - GPMA1321 - Manual (Page 17)

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6. Glue the remaining disk on the bottom of the large disk
as shown. This will become a handy aid in helping you to
properly center the cowl and the engine. In the future this will
be referred to as the cowl tool.
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7. Look at the front of the fuselage and you will see two
dimples on each side of the fuselage. The cowl mounting
blocks are located under each of the dimples.
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8. Place masking tape on the fuselage extending over the
location of the blocks. Draw a 1-1/2" [40mm] line extending
from the center of the block. Do this at all four blocks.
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9. Install the cowl onto the front of the fuselage. Slide the
cowl tool in place over the crankshaft of the engine and into
the opening in the front of the cowl. Hold it tight against the
engine by tightening the prop nut and washer against the
cowl tool.
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10. Make any adjustment needed to align the paint lines
on the cowl with the fuselage. At each of the reference lines
you have drawn on the fuselage, measure from the fuselage
forward to the cowl 1-1/2" [38mm]. Mark that location on
the cowl.
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11. Drill a 3/32" [2.4mm] hole through the cowl and
fuselage mounting blocks at one of the four locations.
Temporarily screw a #4 x 3/8" [9mm] sheet metal screw and
a #4 flat washer into the cowl and fuselage. Drill a hole at
another location, install another screw and washer. Do this
for all four mounting blocks.
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12. Remove the cowl. Apply a couple of drops of thin CA
to the holes to harden the threads. After the glue has
hardened, install the cowl with the #4 x 3/8" [9mm] sheet
metal screws and #4 flat washers.
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13. Using a technique similar to the way you located and
cut the cowl for the engine cylinder head, make any additional
cut outs needed in the cowl for the needle valve, muffler, glow
plug, etc.
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