Seagull cassutt 3M Racer, Assembly Manual, Page: 12 / 23

CASSUTT 3M RACER.
Instruction Manual
12
COWLING INSTALLATION.
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 then
trim and cut as shown.
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. Use the spinner backplate as a guide.
Hold the cowl firmly in place using pieces of
masking tape.
Because of the size of the cowl, it may be nec-
essary to use a needle valve extension for the
high speed needle valve. Make this out of suf-
ficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
place by tightening the set screw in the side of
the needle valve.
Required Parts
•
Fuselage assembly
• Fiberglass cowlinh
• M3x10mm machine screw(4)
Required Tools and Adhesives
•
Pin sive
•
Phillips screwdrive
10) Place the fuselage inverted on the
workbench in a suitable stand. Set the landing
gear in place and use a screwdrive to secure
the landing gear to the fuselage using bolts
M4x20mm and washers. Make sure to use the
threadlock on the bolts so they don’t vibrate
loose.
Thread locker glue.
Trim and Cut
Trim and Cut