1998 Johnson Evinrude "EC" Accessories Service Manual, P/N 520213, Page 106Get this manual
Tilt Piston Identification &
Three different tilt pistons are used on the FasTrak hydraulic unitsAll plungers and check balls are identicalThe tilt piston assemblies contain valving specific to certain modelsTo provide impact protection, it's important that the correct piston assembly be installedrn 1.two holes- are larger .piston of the holes arehave five coils 90 V6 Two of the relief smallthe other Two springs
and the other two have nine coilsOn assembly, the two five-coil springs go in the large relief holes, and the two nine-coil springs go in the small relief holes41879
23-Cylinder and 600 V4The piston relief holes are 0.093 inThree of the four springs are one length, and the fourth spring is shorterOn assembly, the shorter spring can be positioned in any hole in the piston