We claim the ornamental design for a gas powered pressure washer, as shown and described.
FIG. 1 is a left perspective view of the gas powered pressure washer;
FIG. 2 is a rear view of the gas powered pressure washer shown in FIG. 1;
FIG. 3 is a front view of the gas powered pressure washer shown in FIG. 1;
FIG. 4 is a right side view of the gas powered pressure washer shown in FIG. 1;
FIG. 5 is a left side view of the gas powered pressure washer shown in FIG. 1;
FIG. 6 is a top view of the gas powered pressure washer shown in FIG. 1; and,
FIG. 7 is a bottom view of the gas powered pressure washer shown in FIG. 1.
The subject matter shown in dashed lines, and any surfaces of the design not shown, including interior surfaces, form no part of the claimed invention.