Section 12-Engine Cowling - QuiQue's Aircraft YAK-54 Assembly Manual

Required Tools and Adhesive
• 15-30 minute epoxy
• Pencil/Marker
• Drill & 1/16" drill bit
• Masking tape
Step 1
Four screws are used to attach the
cowl on the four wooden blocks
attached to the fuselage. There is an
additional attachment on each side
of the cowling on two standoffs
fastened to the sides of the motor
box.
The cowling should be flush with the
back of this former.
First tape the cowl in the correct
position with masking tape to the
former just in front of the canopy to
help hold it in place.
The four screws that attach to the
four cowling mounting blocks should
measure 15mm forward from the
back of the cowling.
Figure 65

Section 12-Engine Cowling

Step 2
Drill a pilot hole, using a 1/16" dia.
drill bit through the cowl into the four
mounting blocks.
Step 3
Remove the cowl and with a 4mm
(#20) drill bit, drill holes in the
wooden blocks to accept the blind
nut.
Note: If you want you can use
Standard size blind 4-40 nuts with
4-40 screws and use smaller drill bit
to drill for blind nuts. I recommend
using the 4-40 so in case you lost a
screw, you won't have a hard time
finding them at local hardware
stores.
Step 4
Use a drill to up size the pilot holes
you just drilled in the engine cowling
so that they are large enough to
insert the grommets.
Step 5
Dry fit the stand-off attachments and
make sure they sit flush otherwise
sand the tabs down until the stand-
off are flush and then epoxy the
stand off attachments.
Step 6
In order to measure where you will
need to drill the holes for the
stand-off attachment, you will need
to establish a line on the engine
cowling. Use a straight edge and
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