310 Ultra drive coupler

[BlindmanFab]

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 don’t need the engine side, or the dampener, just the 8 cog pump shaft piece.
thanks for any info

[steve45]

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).

[mwhc]

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.

[Foxdecoy]

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.

[BlindmanFab]

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

[BlindmanFab]

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

[mwhc]

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

[ANTONYUK]

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

[BlindmanFab]

Jet unit

[BlindmanFab]

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