Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 68Get this manual

Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 68

PINION 1Check pinion teeth for chips, cracks or excessive weara
2Ohm test the brush holderThe positive (+) brush should not show continuity to brush holderReplace brush holder assembly if ohm test shows continuityaPinion Gear

BRUSH HOLDER 1Inspect brushes for wearReplace brush holder if not within specificationsaPositive (+) Brush HolderBrush Holder Assembly

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