1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 57Get this manual
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5.8 5.8 17.0 27.0 .6 19.9 6.9 6.9 15.5 2.2 13.0 5.2 6.6 5.2 66.4 3.0 5.2 44.0 2.2 4.3 4.2 21.8 5.2 5.2 3.3 3.3
M6 M10 M6 M6 M4
18 NPTF M8 M6 M6-