Great Planes RV-4 40 Kit - GPMA0180 - Manual (Page 42)

❏ 4. Cut the openings in the front of the cowl. Wet sand the
entire cowl with 400-grit wet or dry sandpaper. The cowl is
now ready to be primed.
❏ ❏ 1. Cut out the left and right half of the wheel pants along
the cut line molded in the pants. When cut properly there will
be interlocking tabs to glue the two halves together.
❏ ❏ 2. Glue the two halves of the pants together with
medium CA. Work a small section at a time. Use CA
accelerator sparingly or not at all as it can cause the ABS
plastic to get brittle. Work your way around the wheel pant
until it is completely glued together.
❏ ❏ 3. Use a filler like you did with the cowl to fill the seam. After
the filler has cured, sand the seam with 400 grit wet or dry
sandpaper until the wheel pant halves blend smoothly together.
❏ ❏ 4. Cut the opening in the bottom of the wheel pant for
the wheel.
❏ 5. Repeat steps 1-4 for the remaining wheel pant.
❏ 1. When you installed the engine we showed the engine
with the stock muffler. The Bisson Custom Muffler, Pitts style
for the O.S. .40 - .46FX (BISG4046) is an alternative muffler
you may consider if you would like to hide most of the
muffler inside of the cowl. Before making the cut-outs in the
cowl for the engine and muffler you need to decide which
muffler you are going to use.
❏ 2. Mark an arc on the cowl similar to the sketch. Cut away the
cowl on the arc you have made. This is a good starting point for
cutting some clearance for the landing gear and muffler.
❏ 3. Remove the muffler from the engine. Slide the cowl
over the engine onto the front of the fuselage.
Install the Cowl
Assemble the Wheel Pants
42