The ornamental design for a gearcoverunit for power tool, as shown and described.
FIG. 1 is a perspective view of top, front, and left side of a gear cover unit for power tool showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a perspective view of top, rear, and right side thereof.
The broken lines and the areas within the broken lines are included for the purpose of illustrating portions of the “article” and form no part of the claimed design.