2007 Evinrude E-Tec 75, 90 HP outboards Service Repair Manual P/N 5007211, Page 280Get this manual
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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