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    Proper procedure for Pressure test Mercruiser MR

    Just repaced the prop shaft (bearing carrier)seals in my unit. When i pressure test the unit (dry) it leaks past the new seals from 10 psi all the way down to 0 psi. The old seals came out and the new went in fairly uneventfully. The seals were out of a new kit that is specified for this unit...
  2. I

    Mercruiser MR Lower Unit

    Is there a drain hole for the cavity surrounding the shift shaft? It looks a if the previous owner may have filled and painted it over. After separating the unit from the upper housing while changing out the water pump I noticed that the area around the shift shaft boss was filled with water...
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