The ornamental design for a lower mount cover for outboard motor machine, as shown and described.
FIG. 1 is a front elevation view of a lower mount cover for an outboard motor machine.
FIG. 2 is a rear elevation view thereof
FIG. 3 is a left side elevation view thereof.
FIG. 4 is a right side elevation view thereof.
FIG. 5 is a top plan view thereof.
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a perspective view showing the cover in use.
Regarding FIGS. 1, 2, 3, 4, 5 and 6, the broken lines shown in drawings are for the purpose of showing background structure only and form no part of the claimed design.
Regarding FIG. 7, the broken lines shown in drawings are for the purpose of showing environmental structure only and form no part of the claimed design.