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  1. #1

    310 Ultra drive coupler

    Hi Everyone
    Does anyone know where a billet drive coupler could be acquired?
    I have a 2018 Kawi 310 installed into a small boat with a Scott 612 Jet drive. This package has worked awesome for the summer with about 20 hours on it, but just started to vibrate and after inspecting it broke 5 of the 8 fingers off.
    I donít need the engine side, or the dampener, just the 8 cog pump shaft piece.
    thanks for any info


  2. #2
    steve45's Avatar
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    I don't understand your question. You just need a replacement drive coupling for the pump side? Lots of online parts suppliers, including this website.

    Not sure what you mean by the term 'billet'. Billet is sort of a joke among machinists as it simply means a block of material. Billet aluminum is just a block of aluminum (you would have to specify the alloy).

  3. #3
    I would suggest maybe your boat is flexing somewhat causing the alignment to be thrown off and breaking the coupler. We/I run the stock couplers in higher cr turbo skis with well over 20psi and have never had any issues.

  4. #4
    Quote Originally Posted by mwhc View Post
    I would suggest maybe your boat is flexing somewhat causing the alignment to be thrown off and breaking the coupler. We/I run the stock couplers in higher cr turbo skis with well over 20psi and have never had any issues.
    They're pretty hard to break and like what was said above the only two i've ever broken were due to flex/alignment issues.

  5. #5
    Looking for a CNC Machined billet aluminum adapter piece.
    below is the stock cast one. Itís correctly aligned, Iím just running the 310 motor coupled to a 2 stage jet
    I found a link to a 250/260
    just need a 300/310

  6. #6
    Looking for a CNC Machined billet aluminum adapter piece.
    below is the stock cast one. Itís correctly aligned, Iím just running the 310 motor coupled to a 2 stage jet
    I found a link to a 250/260
    just need a 300/310
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #7
    I'm telling you the issue is the boat/alignment or possibly a broke mount they're not the strongest. I dont think I've ever once heard of anyone breaking a coupler. Because it's in a boat doesn't mean it's making more power etc it just leaves way more variables for alignment to be off at some point. Build a cradle that incorporates all 4 mounts, the through hull bearing carrier and all 4 pump/transom bolts and I guarantee your issue goes away.

    Post a picture of your setup

  8. #8
    ANTONYUK's Avatar
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    Quote Originally Posted by BlindmanFab View Post
    Looking for a CNC Machined billet aluminum adapter piece.
    below is the stock cast one. It’s correctly aligned, I’m just running the 310 motor coupled to a 2 stage jet
    I found a link to a 250/260
    just need a 300/310
    I have for sale
    http://foksmoto.ru/catalog/lodochnye...sikly/1358.htm

    Separate drive shaft coupling price 80$ + shipping cost

  9. #9
    Jet unit
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  10. #10
    There is CNC couplers made for the 250/260
    There has to be one for the 300/310
    if anyone has a source they know of or a link, it would be much appreciated
    thank you

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