1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 206Get this manual
1421 2Slide the Collar PI 334985 onto the driveshaft with large end touching the bearing housing
1421 3Insert the assembled driveshaft into the tool base
on the spring-loaded plunger is flush with end of threads
4Tighten preload screw against the driveshaft until groove
Tighten lock ring on preload screw5Rotate the driveshaft several revolutions to seat bearings
1441 6Position Shim Gauge PI 334984 against guide pins of
the tool base