Exhaust manifold riser for marine engines

Description

FIG. 1 is a top perspective view of an exhaust manifold riser for marine engines, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a cross sectional view taken along the line 6--6 of FIG. 3.