1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 239Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 239

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GEAR HOUSING
NOTE: DO NOT remove tapered bearing from FORWARD gear unless replacement is necessary as removal process will damage bearing5 Inspect FORWARD gear tapered bearing and race for rust,