Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 248Get this manual
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POWR EXPLODED DIAGRAM
40 Nm (4.0 mkg, 29 ftlb) 18 Nm (1.8 mkg, 13 ftlb)
REMOVAL AND INSTALLATION CHART
Step 11 12 13 14 15 ProcedurePart name Breather cover Gasket Bolt