❏
3. Remove the engine. Drill 1/8" [3.2mm] holes at
the marks. Mount the engine to the mount with four
4-40 x 1" [25mm] SHCS (socket head cap screws),
#4 flat washers and lock washers and 4-40 blind nuts.
Mount the Cowl
❏
1. Use a high-speed rotary tool with a cutting bit to
cut slots in the aft end of the cowl to accommodate
the landing gear wires. Also cut an air inlet and air
exit hole. The exit hole may be combined with the
glow plug access hole.
❏
2. Place the cowl on the fuselage and mount the
spinner and propeller. Align the cowl with the spinner.
There should be approximately 3/32" [2mm] between
the spinner and the cowl.
❏
3. Holding the cowl in position, drill a 1/16" [1.6mm]
hole through the cowl and fuselage for one of the
cowl mounting screws. The hole should be about
5/16" [8mm] from the aft edge of the cowl, placing it
about 1/4" behind the front edge of the fuselage side.
Screw in a #2 x 1/4" [6mm] screw just enough to hold
the cowl, but do not tighten the screw.
❏
4. One at a time while holding the cowl in position,
drill a 1/16" [1.6mm] hole and insert a screw at the
remaining three marks. Also drill a hole through both
sides of the cowl and fuselage approximately 3/4"
[20mm] forward of the landing gear.
❏
5. Remove the cowl. Enlarge the holes in the cowl
only with a 3/32" [2.4mm] drill. Test fit the cowl and
mount it to the fuselage with six #2 x 1/4" [6mm] screws.
❏
6. Remove the cowl screws and cowl. Add a
couple of drops of thin CA to the screw holes–don’t
add too much CA, or you will seal the holes.
❏
7. Cut the holes in the cowl for the muffler screws.
This can be done by using a pencil to mark the
heads of the screws on the inside of the cowl, and
then removing the cowl and cutting the holes.
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