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  1. #1
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    Mercury 300XS Lower Unit

    To all hello from a newbie! (hopefully that gives everyone a heads up that I'm probably posting in the wrong forum, the wrong way, or something similar)

    I bought a 1988 Cigarette Decathlon being pushed by 2007 triple 300XS. This is my first time owning modern outboards and I'm learning as I go (painfully).

    My issue is that my center motor broke at the prop shaft and I'm struggling to identify what the lower is so I can order parts or try to repair it?

    I'm attaching some pictures so you, the experts, can point me in the right direction.

    Thanks in advance.Click image for larger version. 

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  2. #2
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    Quote Originally Posted by thegexbird View Post
    To all hello from a newbie! (hopefully that gives everyone a heads up that I'm probably posting in the wrong forum, the wrong way, or something similar)

    I bought a 1988 Cigarette Decathlon being pushed by 2007 triple 300XS. This is my first time owning modern outboards and I'm learning as I go (painfully).





    My issue is that my center motor broke at the prop shaft and I'm struggling to identify what the lower is so I can order parts or try to repair it?

    I'm attaching some pictures so you, the experts, can point me in the right direction.

    Thanks in advance.Click image for larger version. 

Name:	0910181742a.jpg 
Views:	123 
Size:	411.8 KB 
ID:	418445Click image for larger version. 

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Views:	90 
Size:	404.3 KB 
ID:	418444

    Click image for larger version. 

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    Click image for larger version. 

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ID:	418459

    Somebody will be along that knows. It is not a Sportmaster, the nose and skeg will tell it is a Torquemaster or a Fleetmaster.
    Wriggleys gum makes me think of boating, "Double your engines, Double your fun"



  3. #3
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    Looks like a torquemaster, if it has low water pick ups on the front of the nose cone it should be a torquemaster, if it only has the side pick ups it should be a fleetmaster, I was under the impression that the prop shaft is the same on all 3 though?

    44-841978 - Prop Shaft - Sport master
    44-841978 - Prop Shaft Fleet master


    https://www.marineengine.com/parts/m...t-torquemaster



    Link is to the torquemaster parts list, part # is the same on all 3. Not saying this is the best place to purchase, just an example for you.

  4. Likes NICE PAIR liked this post
  5. #4
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    Both the torquemaster and fleetmasters have low water and side water pickups. 99% the time if you have a fat shaft it is a torquemaster.

  6. #5
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    What a pain. Why can't there just be a part or serial number somewhere so it can be looked up?!

  7. #6
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    If you pull the lower there should be some Id markings on the top of housing?

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  9. #7
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    It came from Mercury with a Fleetmaster as per the serial#. Hope it helps.

  10. #8
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    I appreciate you all helping me out.

    I have a fleetmaster with XXL shaft on the way.

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