2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 545Get this manual

2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 545

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GEAR HOUSING
2 Check the teeth and dogs of the reverse gear for cracks or wearReplace the gear if necessary
3 Check the bearings for pitting or rumblingReplace if necessary
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