1999 "EE" Evinrude 5 thru 15 4-Stroke Service Manual, P/N 787022, Page 130Get this manual
13Inspect manifold and discard a-ring seals
1231 14Remove screws retaining exhaust adapterRemove adapter and a-ring seal
1241 1251 1271
15Inspect adapter and discard a-ring seal
16Remove screws retaining the pressure relief valve Remove valve and gasket
126117Inspect valve and discard gasket18Remove eight screws retaining valve cover and bracket to cylinder headRemove cover and discard gasket19Remove six screws retaining cylinder head to cylinder blockTap on the cylinder head with plastic or leather malletRemove cylinder head and discard gasket