1997 Johnson Evinrude "EU" 40 thru 55 2-Cylinder Service Manual, P/N 507265, Page 331Get this manual
[] 8Install five impact relief valve ballsPlace one ball in each of the remaining cavitiesI1Q]
9Place one spring guide in each impact relief valve spring10Place spring guide and spring assembly on each of the impact relief valve ballsPlace the up relief valve spring on the up relief valve
11 Place the large washer over the springs with step side facing valve housingLightly coat the threads of the rod with OVIC Nut Lock12Install and tighten the nut to torque of 35-54 ftIbs(47-73 Nm)