Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 132Get this manual
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INSP ADJ POWER UNIT
Engine oil replacement 1 Remove: Oil filler cap Drain plug 2 Remove: Oil filter Oil filter wrench: YU-3841190890-01426 3 Install: Drain plug 4 Install: Oil filter Oil filter: