Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 11Get this manual
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ELECTRICAL -
LOWER UNIT
Parts Propeller shaft Forward gear Shaft O.DI.DItem Standard
16.97316.984 (0.66820.6687 in) 17.00017.018 mm (0.66930.6700 in)
Service limit