Great Planes Sequence 1.20 EP/GP ARF - GPMA1232 - Manual (Page 30)

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9. Mount your motor to the motor mount plate—the RimFire
1.20 uses four M3 x 8 screws. If also using the rear mount,
fasten it into the mount assembly with four 4-40 x 3/8 "
screws and washers. Test-mount the plate/motor assembly
to the box with four 4-40 x 3/4" screws, washers and lock
washers. Turn the motor by hand, making sure there is no
interference and everything turns free and smooth. Make
any adjustments necessary. Then, remove the mount plate/
motor assembly from the mounting box.
Cut Out
Drill:
7/32" [5.6 mm]
10. Drill 7/32 " [5.6m] holes through the fi rewall at the four “+”
marks and cut the rest of the way through the four, partially-
cut slots for the tabs on the motor mount.
11. Key the mount tabs on the mounting box into the slots
in the fi rewall and fasten the mount with four 8-32 x 3/4 "
socket-head cap screws, #8 lock washers, fl at washers and
8-32 blind nuts. Mount the motor and ESC to the assembly.
12. Rejoin the assembly manual at Mount an Electric
Motor on page 13. Note: The spinner back plate will have
to be enlarged with a 3/8 " [9.5mm] drill for the Great Planes
propeller adapter.