Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 396Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 396

NONBIGFOOT GEAR HOUSING
Pinion Gear Bearing
1Inspect bearing for rust, roughness or discoloration from lack of lubricant2If bearing is damaged, bearing and race must be replaced as an assembly3If race appears to have spun in drive shaft bore, gear case housing must be replaced
a Bearing Race

Pinion Gear
1Inspect pinion gear teeth for rust, chipping, excessive wear (teeth are sharp edged) or broken2If pinion gear teeth are damaged, also inspect forward and reverse gear teeth for damage3Replace gears as requi red

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