Instruction manual PIPER J-3 CUB Item code: BH04
24
1)
Remove the mufler and needle valve assembly
from the engine. Slide the fiberglass cowl over the
engine.
2)
Measure and mark the locations to be cut out for
engine head clearance, needle valve, muffler.
Remove the cowl and make these cutouts using a
rotary tool with a cutting disc and a rotary sanding
drum attachment.
3)
Slide the cowl back into place. 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 the middle of the precut opening. Hold the cowl
firmly in place using several pieces of masking tape.
MOUNTING THE COWL
4)
While holding the cowl firmly in position,
drill four 1,6mm pilot holes through both the
cowl and the side edges of the firewall.
5)
Using a 3mm drill bit, enlarge the four holes
in the cowling.
Enlarging the holes through the cowl will
prevent the fiberglass from splitting when the
mounting screws are installed.
6)
Slide the cowl back over the engine and
secure it in place using four screws.
7)
Install the muffler. Connect the fuel and
pressure lines to the carburator, muffler and
fuel filler valve. Tighten the screws completely
157mm
185mm
130mm
37mm
Cowl area cutout
for engine head.
Cowl area cutout
for muffle
Cowl area cutout
for proper airflow
to carburetor.
C . A