1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 338Get this manual
rv Remove the retaining release valve is screwed in Ring Pliers, 1Be sure the manual all the wayring using OMC Retaining
PIN 303857
l3J 2Remove the manual release valve assembly[:;1 3Inspect the components of the manual release valve, the housingspringand needle Discard the O-ring on the housingf41 4Remove the up check valve housing using drag link socketRemove the components of the up check valve from the manifoldrl 5Inspect the components of the up check valvehousingspringseatand poppet Discard the O-rings from the housing and seatf61 6Remove the down check valve housingRemove the components of the down check valve Inspect the components following Step 5