1977 Evinrude 9.9-15 HP Outboard Motor Service Repair Manual P/N 5305, Page 87Get this manual
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5 If removed, install new washer,
Figure 6-49 Installing Pinion Gear, Thrust Washers and Bearing 8 Insert c1utch dog in gearcase and position in crad1eGROOVES ON DOG UST FACE FORWARD GEARSee Fig