1)
Slide the fiberglass cowl over the engine and line up the back edge of the cowl with the marks you made on the
fuselage.
2)
While keeping the back edge of the cowl flush with the marks, align the front of the cowl with the crankshaft of the
engine. The front of the cowl should be positioned so the crankshaft is in
nearly
the middle of the cowl opening. Hold
the cowl firmly in place using pieces of masking tape.
3)
Slide the cowl back over the engine and secure it in place using four wood screws. See picture below.
4)
Install the muffler and muffler extension onto the engine and make the cutout in the cowl for muffler clearance.
Connect the fuel and pressure lines to the carburetor, muffler and fuel filler valve.
Drill four 2.5mm pilot holes through both the cowl and the side edges of the firewall. Using a 3mm drill bit, enlarge the
four holes in the cowling.
6. COWLING
3) Install one adjustable metal connector through the third hole out from the center of one servo arm, enlarge the hole
in the servo arm using a 2mm drill bit to accommodate the servo connector. Remove the excess material from the arm.
After installing the adjustable metal connector apply a small drop of thin C/A to the bottom nut. This will
prevent the connector from loosening
during flight.
C/A glue.
Cowl area cutout
for engine head.
Cowl area cutout
for muffler
Cowl area cutout
for proper airflow
to carburetor.
Connector
Servo arm
Throttle servo
Throttle pushrod
Secure
Cut
12
Instruction manual
PIPER J-3 CUB Item code: BH58A
