Top Flite TOPA0951 - Manual (Page 22)

22
the threaded ball link ball on the carburetor arm. Glue
in one of the plywood
guide tube mounts where
necessary to stabilize the throttle guide tube.
INSTALL THE FUEL TANK
❏
1. Cut one of the longer
aluminum fuel tubes in half
by rolling it back-and-forth
several times under a
hobby blade. Insert both
halves of the tube, and the other longer tube through
the rubber stopper (it helps to wet the holes in the
stopper with saliva).
❏
2. Assemble the rest of the stopper assembly as
shown—be certain the clunks on the ends of the fuel
lines will not contact the back of the tank. Otherwise,
they could become stuck, causing an interruption in
fuel fl ow. Bend the vent tube upward so it will be at the
top of the tank when the stopper is inserted.
Fuselage
Top
❏
3. Fit the stopper assembly into the tank and tighten
the screw to expand the stopper and seal the tank.
Make certain the stopper is secure and make sure the
clunks on the ends of the fuel lines are not contacting
the back of the tank.
❏
4. Fit the tank into position and hold it in place with
one or two #64 rubber bands.
We’ll install and connect the fuel lines later.
MOUNT THE COWL
On models where the engine and/or muffl er protrude
from the cowl, cutting holes for the engine and muffl er
can be a “catch-22.” You can’t know precisely where
to cut holes until the cowl is mounted, but you can’t
mount the cowl over the engine until the holes are cut.
Sometimes templates work, but templates cannot be
made for
every engine/muffl er combination. Usually,
the best way is to carefully and gradually cut and fi t
as illustrated:
❏
1. Remove the muffl er (you could also remove the
valve cover from four-stroke engines or the head from
2-strokes, but this usually isn’t necessary). Cover the
open cylinder or exposed valves with tape so dust
cannot get in. Temporarily tack-glue pieces of 1/16"
[1.6 mm] balsa (not included) to all four cowl mount
blocks. These will take up the space of the plywood
mounting screw hole doublers that will be glued inside
the cowl later. (See Step 8 on page 23.)
❏
2. Slide the cowl into position over the engine,
aligning the paint lines — even if the engine doesn’t
clear the cowl you should still be able to slide the cowl
into place even if it isn’t perfectly aligned. Temporarily
place the propeller on the engine to determine how
far aft to position the cowl. Use a pencil to mark inside
of cowl at the front of the engine. This will indicate the
approximate location of where to start cutting the cowl.