1999 "EE" Outboards Accessories Service Manual, P/N 787026, Page 182Get this manual
1Be sure the manual release valve is screwed in all the wayRemove the retaining ring2Remove the manual release valve assembly
3Inspect the manual release valveDiscard the O-rings on the housing4Remove the up check valve housing using drag link socketRemove the components of the up check valve from the manifold33710
5Inspect the components of the up check valvehousingspringpoppetand seat Discard the O-rings from the housing and seat6Remove the down check valve housingRemove the components of the down check valveInspect the components following Step 5