Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 146Get this manual
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CYLINDER BLOCK AND CRANKCASE
aOil Seal HousingBolt (2) M6 20 mmGasket 3 Use puller 91- 83165M to remove seals from the oil seal housing91-83165M
aOil SealSpacer