❑
1. Using a Moto-Tool, grind out the prop and cooling
openings in the front of the cowl as marked.
❑
2. If you’re installing a Saito .50 engine, a cut-out template is
included on the last page of this instruction manual. This
template will assist you in cutting out the opening for the
engine. Place the template over the cowl. With a felt
tipped pen, mark the area to be cut out.
❑
3. Carefully cut out the marked area using a Moto-Tool.
Note:
If you are using another type of engine, it will be
necessary to carefully cut out the engine area in the cowl to
match your particular engine.
❑
4. Slide the cowl onto the fuselage.
Note:
It may be
necessary to remove the muffler.
❑
5. Tape the cowl securely into position and check that it fits
correctly. There should be ample clearance (1/8") around
the engine and muffler. Also check that the prop hub is
centered in the opening in the cowl and that the prop hub
extends 3/16" forward of the cowl. Drill four 1/16" holes
as shown.
❑
6. Remove the tape and attach the cowl to the fuselage using
the four sheet metal screws provided.
Note:
On some engines where the carburetor is not easily
accessible, a remote fueling valve can be used. Dubro’s DUB334
is an excellent choice. The installation is shown below. A hole
is then drilled in the cowl to access the fueler.
34
Section 13: Attaching The Cowl
Fiberglass cowl
Sheet metal screws (4)
Fuselage
Engine template (for Saito .50 engines only)
Fueling valve (optional)
Moto-Tool with sanding
drum
Small Phillips screwdriver
Drill
1/16" drill bit
Masking tape
Felt tipped pen
Ruler
Parts Needed
Tools And Adhesives Needed
Summary of Contents for J-3 Piper Cub
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