1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 261Get this manual
Pilot Check Valve Reassembly 1Lubricate o-rings with power trim fluid2Install one of the seats into manifoldPush the seat into place using 932" or mm socket on the OUTSIDE diameter of the seat3Install corresponding poppet, spring and plug4From the opposite side of the manifold, install spool and the other seatPush the seat into place using 932" or mm socket on OUTSIDE diameter of seat5Install remaining poppet, spring and plugTorque plugs to 120 lbin(13.5 Nm)
Oil Pump Reassembly