Riding lawn mower

[0001]FIG. 1 is a top, front, left perspective view of a riding lawn mower showing our new design;

[0002]FIG. 2 is a bottom, rear, right perspective view thereof;

[0003]FIG. 3 is a front elevation view thereof;

[0004]FIG. 4 is a rear elevation view thereof;

[0005]FIG. 5 is a left-side elevation view thereof;

[0006]FIG. 6 is a right-side elevation view thereof;

[0007]FIG. 7 is a top plan view thereof;

[0008]FIG. 8 is a bottom plan view thereof;

[0009]FIG. 9 is an enlarged view of detail “9” identified in FIG. 1;

[0010]FIG. 10 is an enlarged view of detail “10” identified in FIG. 1;

[0011]FIG. 11 is an enlarged view of detail “11” identified in FIG. 1;

[0012]FIG. 12 is an enlarged view of detail “12” identified in FIG. 2;

[0013]FIG. 13 is an enlarged view of detail “13” identified in FIG. 2;

[0014]FIG. 14 is an enlarged view of detail “14” identified in FIG. 2;

[0015]FIG. 15 is an enlarged view of detail “15” identified in FIG. 2;

[0016]FIG. 16 is an enlarged view of detail “16” identified in FIG. 7; and,

[0017]FIG. 17 is an enlarged view of detail “17” identified in FIG. 8.

[0018]The dashed broken lines in the drawings depict portions of the riding lawn mower that form no part of the claimed design.

[0019]The dash-dot-dash broken lines are for notating enlarged views and form no part of the claimed design.