1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Manual, Page 178Get this manual
7 [] 8Inspect valves for contamination, excessive wear, or damagePay particular attention to the valve seat face, replace if pittedValve stems that show excessive wear or are warped should be replaced[] 9Push on compression relief pinPin should move smoothly with very little pressureIf pin sticks or requires significant effort to move, check for cause and repair or replace as necessary
10Use micrometer to measure the camshaft lobesRefer to Engine Specifications, Section 1, for dimensions
11Inspect rocker arms for contamination, excessive wear, or damageSome wear to the face of the rocker arm is normalReplace if wear is severe enough to show porosity (pitting) on the face
[1Q] Important
12Use micrometer to measure the diameter of each crankpin and main bearing journalRefer to Engine Specifications, Section 1, for dimensions