1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 225Get this manual
13811391 Insert thepreload screw CD against thethe .tool baseuntil assembled into and tighten dnveshaft groove Q) on the spring-loaded plunger is flush with end of threadsTighten locking ring on preload screw5Rotate the driveshaft several revolutions to seat bearing
1401 6Position Shim Gauge PI 328366 of the tool base
against
guide pins
7Check the squareness of the bearing housing mounting surface by holding the gauge bar against the pinion while rotating just the bearing housing and measuring the clearance between the gauge bar and bearing housing with feeler gaugesMake measurements between each pair of screw holesReplace the bearing housing and repeat check if variance exceeds 0.004 in (0,10 mm)
1411 8Check the squareness of the pinion to housing (between the driveshaft by holding the gauge bar against the bearing
the screw holes) while rotating just the driveshaft and pinion assembly and measuring the clearance between the gauge bar and the pinion Replace the pinion or the driveshaft, as necessary, and repeat the check if variance exceeds 0.002 in (0,050 mm)9Subtract the average clearance measurement obtained in Step from .020 in(0,508 mm) to determine the correct shim thickness requiredSelect fewest number of shims to achieve correct thickness