FIG. 1 is a perspective front view of a motor assembly with motor module, control unit, battery unit, and motor operator according to our ornamental design,

FIG. 2 is a perspective rear view thereof,

FIG. 3 is an elevational right side view thereof,

FIG. 4 is an elevational rear view thereof,

FIG. 5 is an elevational left side view thereof,

FIG. 6 is an elevational front view thereof,

FIG. 7 is a bottom plan view thereof, and

FIG. 8 is a top plan view thereof,

FIG. 9 is a perspective front view of the motor module,

FIG. 10 is a perspective rear view thereof,

FIG. 11 is an elevational right side view thereof,

FIG. 12 is an elevational rear view thereof,

FIG. 13 is an elevational left side view thereof,

FIG. 14 is an elevational front view thereof;

FIG. 15 is a bottom plan view thereof, and

FIG. 16 is a top plan view thereof,

FIG. 17 is a perspective front view of the control unit,

FIG. 18 is a perspective rear view thereof,

FIG. 19 is an elevational right side view thereof,

FIG. 20 is an elevational rear view thereof,

FIG. 21 is an elevational left side view thereof,

FIG. 22 is an elevational front view thereof,

FIG. 23 is a bottom plan view thereof, and

FIG. 24 is a top plan view thereof,

FIG. 25 is a perspective front view of the battery unit,

FIG. 26 is a perspective rear view thereof,

FIG. 27 is an elevational right side view thereof,

FIG. 28 is an elevational rear view thereof,

FIG. 29 is an elevational left side view thereof,

FIG. 30 is an elevational front view thereof,

FIG. 31 is a bottom plan view thereof; and,

FIG. 32 is a top plan view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design.