1992 Johnson Evinrude "EN" 90 deg. Cross V Service Manual, P/N 508145, Page 384Get this manual
49 131 Remove the high pressure port O-ring50 132
Remove the trim-down relief valve and spring
f'511 33Clean and inspect the components of the trim-down pump relief valveReplace the rubber sealif necessaryThe seal can be easily removed from the valve with your fingernailPress new seal in place with the ridge facing out52 134Remove the spring from the expansion relief valve
53 135Remove the expansion relief valve core54
Remove the expansion relief valve seat