1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 214Get this manual
Driveshaft Shimming Using Tool, PIN
The driveshaft pinion is precisely meshed with the forward and reverse gears by using shim or shims between the driveshaft bearing housing and the thrust washerWhen installing new thrust bearing or washer, bearing housing, pinion or driveshaft, it is necessary to properly shim the assembly to restore factory clearanceGauge bars are precision made and should be handled carefullyThe length of each bar is stamped near the part numberThis dimension is 0.020 in(0,508 mm) shorter than the actual shimmed length of the driveshaft
Degrease pinion and driveshaft tapers prior to assembly
13s1 13s1
1Install the pinion onto the driveshaftTighten the pinion nut to 40-45 ftIbs(54-60 Nm)
2Assemble the driveshaft bearing housingthrust washerand thrust bearing onto the driveshaftUse OMC Driveshaft Seal Protector, PIN 312403, whenever installing or removing the bearing housing