Walk behind mower

FIG. 1 is a front perspective view of a walk behind mower showing our new design;

FIG. 2 is a top plan view of the walk behind mower;

FIG. 3 is a right side elevation view of the walk behind mower;

FIG. 4 is a left side elevation view of the walk behind mower;

FIG. 5 is a front elevation view of the walk behind mower;

FIG. 6 is a rear view of the walk behind mower; and,

FIG. 7 is a bottom plan view of the walk behind mower.

The broken line showing in the figures is included for the purpose of illustrating portions of a walk behind mower and forms no part of the claimed design.