Great Planes PT-60 Kit - GPMA0119 - Manual (Page 18)

D 5. Remove the engine and engine mount from the fuse.
Use a centerpunch or sharpened nail to "dimple" the marks
on the rails, then drill a 7/64" hole through the rails at each
punch mark. If you have access to a drill press, this is the
best tool for the job. However, if you are using a hand-held
electric drill, try to keep the bit perpendicular to the rails.
D 6. Reinstall the engine mount and position the engine
over the holes in the rails. Mark the location of the needle
valve on the inside of the nose blocks. Use a hobby knife
and round file to shape the needle valve access in the fuse
side (See next photo.) Redrill the throttle and steering
pushrod holes with a 3/16" bit to puncture the tri-stock.
D 7. Install the engine with four #6-32 x 3/4" sheet metal
screws that have been provided with this kit.
through the throttle pushrod tube into the radio
compartment. You will need to make a couple of bends in
the pushrod so that the clevis will engage the throttle arm
on the engine without binding. Install a silicone retainer
around the clevis when satisfied with how the wire is bent,
then "snap" the clevis onto the throttle arm.
D 11. Assemble the fuel tank following the manufacturer's
instructions*. Push a 6" length of fuel tubing onto the tank's
vent and fuel supply nipples. Install the fuel tank in the fuse
with the vent tube passing through the firewall on the right
and the fuel supply tube on the left (as viewed from the
back of the firewall). Check for kinks and fix any problems
before proceeding.
*Note: We used a 12 oz Great Planes tank (GPMQ4105) in
our prototypes. By using the supplied right-angle fuel
supply tube, the fuel can be routed to the top of the firewall
without the risk of kinking the tube.
D 8. Cut two 12" long pieces of outer pushrod tube from
the remaining 36" tube, then roughen the outside surface
with 150-grit sandpaper. Insert the pushrod tubes through
the throttle and nose wheel steering pushrod holes in the
firewall and F-2, leaving about 1/16" of both tubes
protruding past the firewall. Glue the pushrod tubes
in place.
D 9. Cut a 36" threaded wire pushrod in half to make
two 18" pieces. The wire with threads on one end is for the
throttle and the plain piece is for the nose wheel steering
pushrod. Save the steering pushrod for later use.
D 12. Cut some strips of 1/4" latex foam rubber to pack
under and around the tank (see photo for step 11). The
foam rubber holds the tank in place and helps prevent fuel
"foaming" caused by engine vibration.
D 13. Hold the muffler in position and, if it touches the top
of the nose block, mark the area that will need trimming.
Remove the engine, then cut the muffler clearance with a
razor saw and hobby knife. Shape the bottom corners with
a round file for a neat appearance. Attach the muffler to the
engine before testing the fit. There should be a gap of
3/32"-1/8" around the muffler header.
...................Nylon Clevis (1)
D 10. Screw a nylon clevis 14 revolutions onto the 18"
length of threaded pushrod wire. Insert the pushrod
Well, we're making progress. The fuse assembly is about
99% finished, the stab and f i n are done, the engine and
tank are nicely installed. Have a soda. clean up your
workbench, then let's start putting the pieces together.
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