2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 280Get this manual
GEARCASE ASSEMBLY gaugesMeasure between each pair of screw holesReplace the bearing housing and repeat check if variance exceeds 0.004 in(0.010 mm)Check the squareness of the pinion to the driveshaft by holding the shim gauge bar against the bearing housing (between the screw holes) while rotating just the driveshaft and pinion assembly and measuring the clearance between the shim gauge bar and the pinionReplace the pinion or the driveshaft, as necessary, and repeat the check if variance exceeds 0.002 in(0.050 mm)Subtract the average clearance measurement obtained from 0.020 in(0.508 mm) to determine the correct shim thickness requiredSelect the fewest number of shims to achieve the correct thicknessRemove the driveshaft from the tool baseRemove the collar and bearing housing from the driveshaft, and add the required amount of shims
ASSEMBLY
Water Intake Screens
Install water intake screensTorque screws to 60 to 84 inlbs(7 to 9.5 Nm)