1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 186Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 186

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POWERHEAD
IMPORTANT: Chamfered side of retaining ring faces away from lower crankshaft ball bearing8 Install retaining ring, stuffer washer and lower crankshaft oil seal9 Install upper crankshaf