1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 194Get this manual
ASSEMBLING 3-CYIINDER
Reed BlockIntake Manifold Installation 16- Take note of the two unique reed block gasketsThe unmarked gasket is positioned on the mounting studs first, followed by the reed block housing, Place the second gasket in position over the mounting studs, with the letters "U" and "Pi' facing UP and readable toward the cylinder head, as indicated in the accompanying illustration