1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 68Get this manual
Disassembly
All screws addressed in this procedure are No15 Torx
In The air motor cover is under spring pressure[IJ
Use caution when removing screws and releasing that pressure
With No15 Torx screwdriver, remove the Torx screws holding the air motor coverTo control the spring pressure, place pump on your bench with the air motor cover facing upwardHold down on cover while removing screws
Set cover, screws, O-ring, and two springs asideRemove the Torx screws attaching the inlet housing to the intermediate housing and separate these partsAs you lift the inlet housing, the oil piston will be drawn out of the oil pump