gear assembly mercruiser alpha 1 gen 2

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Jul 20, 2008
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i just rebuilt the lower unit and replaced the gears bearings and shims. everything runs great after put together and sounds perfectly normal. although after i took it out on the water i checked the gear oil and it had small metal shavings. is this normal during the break in process of the gears? how long does it take to break in?
 
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