Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 282Get this manual
LOWR EXPLODED DIAGRAM
LOWER UNIT (F15AF9.9C)
REMOVAL AND INSTALLATION CHART
Step 12 13 14 15 16 17 18 ProcedurePart name Screw Nut Water inlet grill Bolt Toothed washer Anode Trim tab (for S-transom models) Q'ty Reverse the removal steps for installationService points