1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 339Get this manual
101 8Remove the four large motor flange retaining screws l!J Remove the motor and discard the a-ring 9Remove the filter
1010Remove the drive coupler from the pump assembly
Evenly loosen and remove the three Allen head cap screws that retain the pump assembly to the manifoldRemove the pump assemblyThe pump assembly is not serviceableIf the pump assembly needs flushing, do not clean it in solventOnly clean the pump assembly in clear hydraulic fluid12Remove the two pressure port O-rings r:J3l 13Remove the down relief valve assembly from the mani 1 414Inspectthe components ofthe down relief valveballguideand spring