Canopy Installation; Installing The Instrument Panels - Model Tech SUKHOI 40 Instructions Manual

11) The cowl is held in place using four
2mm x 6mm wood screws threaded into four
preinstalled mounting blocks on the firewall. Use
a ruler and pen to locate and mark the mount-
ing screw locations onto the cowl.
12) Using a 1/16" drill bit, drill four pilot
holes through the cowl and into the mounting
blocks at the locations you marked.
13) Remove the cowl and enlarge the holes
in only the cowl using a 5/64" drill bit. Reinstall
the cowl and secure it in place using the four wood
screws.
14) Locate the areas of the cowl that need
to be removed for access to the high and low
speed needle valves and muffler assembly.
15) Remove the cowl and make these cut-
outs using a Dremel Tool with a cutting disc and
sanding drum attachment. Holes for the needle
valves can be cut using a drill bit. We highly sug-
gest the use of a Dubro Fuel Filler Valve to fuel
the airplane. This should be mounted to the cowl-
ing at this time also.
Because of the diameter of the cowl, it will
be likely you will need to use a needle valve
extension for the high speed needle valve. Make
this out of sufficient 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.
16) Install your muffler (stock or Pitt's Style)
and connect your fuel and pressure lines to the
fuel tank.
If you are using a two stroke engine with a
stock muffler a muffler extension will be nec-
essary. No extension is necessary if using a four
stroke engine or a two stroke engine with an af-
termarket Pitt's Style muffler (recommended).
17) If using a Pitts Style muffler we highly
recommend cutting and air exit hole that is 1-1/2"
wide and 1-1/2" to 2" long. Locate the hole just
behind the hole you cut for the exhaust pipes to
exit the cowl. This will help cool the engine and
muffler assembly and prevent the engine from
overheating.
An air exit hole is also recommended even
if using a stock muffler.
18) Once you are satisfied with the fit of the
cowl and all access holes have been cut, remove
the cowl and paint it with Topflite Gloss Clear #
TOPR7200 to prevent raw fuel from damaging
the paint.
19) After the clear coat has dried, connect
the fuel lines to the muffler, fuel filler valve and
carburetor. Reinstall the cowl and secure it in
place. Install the prop and spinner.
Depending on the pitch size of the propeller
you choose to use, it may not fit the cut outs
in the spinner. If necessary, you should relieve the
cut outs to fit your propeller using a modeling knife.
{1} Clear Molded Canopy
{4} 2mm x 10mm Wood Screws
{2} Plastic Molded Instrument Panels

INSTALLING THE INSTRUMENT PANELS

1) Using a modeling knife, carefully cut out
the front and rear instrument panels along the scribe
lines at the bottom edges.
2) Using a 220 grit sandpaper with a sand-
ing block, sand the edges of both panels smooth
and straight. See photo # 47 below.
Photo # 47
FRONT
PANEL
25
PARTS REQUIRED
REAR
PANEL