I claim the ornamental design for a motorcycle air cleaner cover, as shown and described.
FIG. 1 is a side view of a motorcycle air cleaner cover according to one embodiment of the invention, shown in a position of use from the right side of the motorcycle; and,
FIG. 2 is an enlarged right side view of the motorcycle air cleaner cover of FIG. 1.
The broken line showing of the environment is for illustrative purposes only and forms no part of the claimed design. The outermost broken lines located within the respective motorcycle air cleaner covers of FIGS. 1 and 2 define the boundary of the claimed design and form no part of the claimed design.