1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 205Get this manual
Suction Seat Removal 1Unscrew and remove suction seat plug form manifoldUsing suitable pin punch, knock the filter and suction seat out from the inside of the manifold cavity
Remove plugsRemove springs and poppetsPush out one seat and spool using wire removal toolFrom opposite side, using punch, push out spool and remaining seat
CAUTION
DO NOT use any tool on the suction seat as any damage to the surface will not allow the ball to seat
IMPORTANT: Inspect for debris where poppets seat
Filter Suction Seat Ball Plug
Plug Spring Poppet Seat Spool