Hangar 9 Funtana 125 Assembly Manual page 43

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Step 4
Slide the cowl over the engine. Slide the spinner backplate
on the engine shaft and position the cowling so the backplate
is centered in the opening. Also make sure there is enough
room between the backplate and cowl so the spinner will not
rub against the cowl. Use a felt-tipped pen and the templates
to mark the cowling.
Hangar 9 Funtana 125 ARF Assembly Manual

Step 5
Use hobby scissors and a rotary tool with a sanding drum to
make the access holes and mounting holes in the cowling.
The mounting holes for the cowling are best made using a
pin vise and 1/8-inch (3mm) drill bit.

Step 6
Slide the cowl back on the fuselage and check that all the
openings align. It may be necessary to fine-tune things
slightly. Once final fit has been determined, use four 3mm x
12mm hex head bolts and four 3mm washers to secure the
cowl. Use a 2.5mm hex wrench to tighten the screws.
Hint: Slide a small 1/4-inch (6mm) piece of fuel tubing
on each screw after sliding the washer in position. This
will keep the screws from vibrating loose.
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