17’ s238 randomly shuts off....???

[Aquaholic1 3]

So it’s happened a couple times now over the summer, but today alone it happened 5-6 times.... someone would fall while surfing  and as I’d come to a stop or letting off the throttle to turn around, the engine would just die. Twice was when I was just sitting at idle ready to take off. Anyone else have this happen or know what it could be? 

[NW Vettes 11]

Mine has done it a couple times if I slam to neutral from While surfing. It feels more like the fuel pump cuts the fuel totally off but it starts right up after that. 

 

Doesn’t help but at least you’re not completely alone

[Aquaholic1 3]

Yeah that’s usually what it is, although today happened way to much to be comfortable with it and that it happened while in idle. Hopefully it’s just that or bad gas maybe.... idk though. Thanks for making me feel not alone! Lmao

[seattlehd 9]

Okay, this is going to sound ridiculous but it's true. I had the exact problem with my 2017 s238 and discovered a few others having the same problem. What we found is that the safety lanyard at the base of the throttle is SUPER sensitive to being bumped so when I was towing a goofy side rider with my body twisted to the right or came off throttle I would hit that switch VERY lightly with my knee/leg and everything would die. It was happening while towing and I had people run into the boat! Cwazy also had this problem and we both modified the safety lanyards on our boats so it couldn't be bumped. It has never happened again. 

[Aquaholic1 3]

Ok @seattlehd, so oddly enough, thinking back it was almost every time with a goofy rider and I distinctly remember turning to my right to lean over and talk to her on most of the occasions! Funny thing is I actually checked to make sure the lanyard was was completely connected... well I’ll be taking it out again this weekend so we’ll see. Thanks guys!!!

[seattlehd 9]

It is touch sensitive also, so you can push the red button with the lanyard still attached and it kills the entire boat. My temp fix was to move my seat all the way forward so my leg hit the cup holder at all times. I was pretty much hugging the steering wheel which I hated but I also didn't kill the boat accidentally 5 times a day. Good luck and let us know if that was the problem! 

[InfinitySurf 302]

I have never had my boat cut off due to that while on the water...but noticed that mine is very sensitive as well and if I touch it in any way, it kills all power. Found out the first time when I had boat powered up with lights on and was cleaning it in the evening. I thought I had a bad kill switch and ordered a new one like a month ago but just have not gotten around to installing it, did not know this was a common theme. Good catch!

Edited August 10, 2018 by InfinitySurf

[Cameron 4]

Ive noticed the same problem with bumping the Red Button.

I ended up 3D printing a thicker lanyard piece to eliminate the little bit of play the stock one has. Problem solved

[qxbuzz 7]

The kill switch and lanyard are in a bad place.  It took me several occurrences of my knee hitting it to realize that was the problem.  I have had the engine quit a time or two while going from in gear to idle. Sometimes the throttle lever gets hung up or sticks.  The 2017 and earlier throttles are cheap.  Mine is a 2017 also. The 2018 and newer use Livorsi which are much smoother.  My previous boat had a Livorsi and I miss it...

 

 

Edited August 13, 2018 by qxbuzz

[Kurt HEINE 0]

I own a 2018 Supreme s238. The motor  keeps stalling out when idling and driving. It’s not the lanyard because I’ve been no where near when it’s died. Please help if you’ve found a resolution? Thanks Kurt