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Nissan 9.9

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  • Nissan 9.9

    Leaking oil from around the prop. How to replace the oil seal ?

  • #2
    Welcome to Iboats,

    Is that 9.9 a 2/4 strokes OB ? If it were a 2 strokes, could it be unburn fuel/oil gummy dark leftovers or it's rather clean gear oil exiting through prop ?

    Happy Boating

    Sea Rider 320, 380 Sibs, 450 Rib, 2 Strokes Tohatsu 5,18 & 30 HP Proud Smokers


    • #3
      We would need your exact model to help, but if you need a new prop shaft seal, you may want to consider doing a seal kit for the LU.
      Buffalo NY USA


      • #4
        Like others have said, need to know if it's a 2 or 4 stroke.

        If it's a 4 stroke, you need to figure out if it's crankcase oil or lower unit oil. If lower unit oil, then pvanv already gave the advice you need. If it's crankcase oil, is it possible someone just laid the engine down on the wrong side?


        • #5
          Sign up today
          yep on the 4 stroke my 15 has a pic to lay down on one particular side. I found out about it after it made the 200 mile trip home in the back of my truck...
          1979 Carver Montego 2357 | 260 Mercruiser upgraded to Alpha | 2006 Nissan 15hp kicker

          Girls cry and boys fart in front of friends, but girls fart and boys cry in front of true friends.