1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 331Get this manual
_====='' the remaining cavities
!alSInstall five impact relief valve ballsPlace one ball in each of
9Place one spring guide in each impact relief valve spring
19l10Place spring guide and spring assembly on each of the valve ballsPlace the remaining valve spring on the up relief valve11Place the large washer over the springs with step side facing valve housingLightly coat the threads of the rod with OMC Nut Lock