2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 534Get this manual

2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 534

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GEAR HOUSING

NOTE: Check that there is no engine oil on the spline and check it for rust or wearCheck the oil pump if necessary
Page 6A-16

90-888465 JUNE 2002