1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 198Get this manual
Driveshaft Servicing
1To separate the upper driveshaft from the lower driveshaft, remove the roll pinReplace the damaged componentW
2To assemble the driveshaft, install the driveshaft retainer into the groove of the upper driveshaft
3Install the upper driveshaft into the lower driveshaft, aligning the holes in the driveshaft retainer and the lower driveshaft4Install the roll pin:
V4flush V6to dimension shown Driveshaft Shimming Using Tool, PIN 393185
The driveshaft pinion is precisely meshed with the forward and reverse gears by using one or more 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 driveshaft29338