Model Tech Fun Fighters P-51 ARF Assembly Instructions Manual page 15

PRO TIP To make it easier to install the blind nuts in the next procedure, glue each blind nut to the tip of a dowel using a small
dab of thick C/A. You can then use the dowel to line up the blind nuts with the machine screws.
step 2: instaLLing the engine
❑ Install the spinner backplate onto your engine's crankshaft, using the propeller washer and nut included with your engine.
IMPORTANT There are different size spinner adapter rings included that fit different crankshaft sizes. Choose the size that fits
your engine's crankshaft, then push the adapter ring firmly into the spinner backplate.
IMPORTANT Be careful that you drill the holes straight down and not at an angle.
❑ Use a dab of thick C/A to temporarily glue the engine mounting beams
to your engine, making sure that both engine mounting beams are straight
and even.
❑ Line up the engine mounting beams with the precut slots in the firewall
and temporarily install the four M3 x 18mm machine screws, four M3 flat
washers and four M3 blind nuts.
❑ Carefully center the engine mounting beams over the precut slots and
firmly tighten the four machine screws to draw the blind nuts into the back
of the firewall.
❑ Measure the distance from the firewall to the back of the spinner
backplate. Adjust the depth of the engine so that the measurement is
3-7/8" (98mm).
❑ Mark the locations of the engine mounting holes onto the engine mounting
beams.
❑ Remove the engine and drill 5/64" (2mm) diameter pilot holes through
the engine mounting beams at the marks you drew, then enlarge the pilot
holes, using a 1/8" (3mm) diameter drill bit.
❑ Install the engine onto the engine mounting beams using four M3 x 25mm
socket-cap screws, eight M3 flat washers and four M3 lock nuts.
☞
Tighten the socket-cap screws and lock nuts firmly to hold the engine
securely in place.
Page