Merc Optimax 175 Leak

tspotornotspotorno Posts: 10 Greenhorn
I have a 189 with the Optimax 175. It has about 25 hours or so on the motor and this weekend when I went to flush the motor and noticed a pinhole and a stream of water coming out a gasket on the lower unit.

I'm attaching a picture.

I do not remember ever seeing this before, however, I usually just hook up the motor and start flushing while I clean the rest of the boat.

Is this normal? Or should I be concerned?


  • FlatsBoyFlatsBoy Posts: 1,337 Officer
    There is no gasket between the lower unit and the mid section there. The lower unit locates on pins there could be a cast flaw. I would bring it in and have it checked to make sure the lower unit is aligned and torqued properly to spec at your dealer.
  • tspotornotspotorno Posts: 10 Greenhorn
    Ok tnx for the update, needs to go in for maintenance anyway. Hopefully is it does not turn out to be a big ordeal.
  • Egrets LandingEgrets Landing Posts: 945 Officer
    Not normal.. def a problem..
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