
52
Hangar 9 P-51 Mustang 60 ARF Assembly Manual
Step 2
Locate the firewall template. Use low-tack tape to secure it
to the engine box. Use a drill and 1/16-inch (1.5mm) drill
bit, drill through the template and through the firewall for the
mount that fits your particular motor. A paper copy of the
engine template is located on Page 71 of this manual.
Step 3
Remove the template from the firewall. Use a drill and 5/32-
inch (4mm) drill bit to enlarge the holes in the firewall.
Step 4
Use four 8-32 x 3/4-inch socket head bolts and four #8
washers to secure the aluminum motor standoffs to the
firewall. Use a 9/64-inch hex wrench or ball driver to tighten
the bolts.
Important
: Make sure to use threadlock on all metal-
to-metal fasteners to prevent them from vibrating loose.
Step 5
Use a 2.5mm hex wrench or ball driver to attach the
X-mount to the motor using the screws provided with the
motor. Make sure to use threadlock on these screws as well.
Step 6
Use four 8-32 x 3/4-inch socket head bolts and four #8
washers to secure the motor to the aluminum standoffs. Use
threadlock on the screws before tightening them with a 9/64-
inch hex wrench or ball driver.