E-flite Byp Yak 3D ARF - Manual (Page 23)

 2. Attach the ESC to the motor. It may be necessary
to solder connectors on the ESC.
 3. Check the direction of rotation of the motor
using the radio system and motor. It should rotate
counter-clockwise when viewed directly from the
front. If it rotates clockwise, follow the instructions
included with the ESC to correct the problem.
 4. Mount the motor, using four 3mm x 8mm screws
and two 3mm washers. 3mm washers must be
installed between the firewall and the motor on
the pilot's right side to provide the correct amount
of right thrust.
Note: Please be sure to use an ESC with the
proper 9V cutoff when using 3-cell Li-Po packs.
We also suggest this cutoff to be of the soft
variety to prevent hard motor cutoffs during low
level 3D flying.
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