The ornamental design for a chromecover for enginehead of a motorcycle, as shown and described.
FIG. 1 is a front elevational view, with the rear view being a mirror image, of a chrome cover for engine head of a motorcycle showing my new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a perspective view thereof, showing a right cover and a motorcycle engine in broken lines to show the environment of the claimed chrome cover for engine head of a motorcycle, and forming no part of the claimed design.