The ornamental design for a mowerdeck of a walk power lawn mower, as shown and described.
FIG. 1 is a perspective view of a mower deck of a walk power lawn mower showing our new design;
FIG. 2 is a front elevational view of the invention illustrated in FIG. 1;
FIG. 3 is a right elevational view of the invention illustrated in FIG. 1;
FIG. 4 is a left elevational view of the invention illustrated in FIG. 1;
FIG. 5 is a back elevational view of the invention illustrated in FIG. 1; and,
FIG. 6 is a top plan view of the invention illustrated in FIG. 1.
The broken line showings of the handle assembly, the handle assembly mounting flanges, the engine, the front wheels, and the rear wheels are for illustrative purposes only and form no part of the claimed design.