1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 282Get this manual
5Rotate the driveshaft several revolutions to seat bearings 6Position the correct shim gauge against guide pins of the
7Check the squareness ofthe 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 the 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)Check the squareness of the pinion to the driveshaft by holding the gauge bar against the bearing housing' (between he screw holes) while rotating just the drive's haft and pinion assembly and measuring the clearance between the gauge bar and the pinion with feeler gauge CDReplace 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 0.030 in(0,762 mm) to determine the correct shim hickness required Select the fewest number of shims to achieve the correct thickness10 Remove the driveshaft from the tool baseRemove the collar and bearing housing from the driveshaft and add the required amount of shims