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Help on water! Starboard engine shut down

Been there done that, I was just cruising along about 35 mph and the engine just shut off like the lanyard was pulled, but as soon as I tried to restart it I heard the engine cranking really fast and knew what it was
 
Ouch! Very sorry that happened to you. Please keep us updated. I'd really like to know the root cause.
 
I believe they had a batch of faulty chains , research it, they went to a heavier and wider chain but it is very expensive and Yamaha should have continued to cover the bad ones even out of warranty since they followed a pattern of failures but chose not to do a recall. Even though my issue was covered under warranty it took a couple months to get it back and the resale values are effected negatively if you have one of the effected years
 
And now the insult to injury , what about the second engine ?
Will he have to worry and possibly experience the same issue later on with the second one.
 
Cobra Jet Steering LLC said:
I believe they had a batch of faulty chains , research it, they went to a heavier and wider chain but it is very expensive and Yamaha should have continued to cover the bad ones even out of warranty since they followed a pattern of failures but chose not to do a recall. Even though my issue was covered under warranty it took a couple months to get it back and the resale values are effected negatively if you have one of the effected years
Click to expand...

I wasn't tracking this issue, but humans are imperfect. Do you know where I can find more info on which models/years were affected by the less beefy chain?

These aren't like car engines, and there isn't anything in my service manual about a timing chain maintenance schedule. The closest thing I can find is the manufacturer's recommendation to check valve clearance height every 200hrs/2y, but then again it seems like even the glove compartment gets checked at that interval. Is there a suggested timing chain maintenance interval or is everyone supposed to head back to the dealer every other year for a tear down?
 
Your year 2018 is fine it first showed up on the super charged models and then on the NA models I had 2014 engines and those were NA models I have heard of the super charged issues going back to around 2010 but I know they seemed to have the issue corrected late in 2015 or early 2016 I have 2021 engines now
 
Pop the Intake cover off.
Its a few bolts and will allow you to see TC damage/failure.
Do you have insurance?
 
Cobra Jet Steering LLC said:
Your year 2018 is fine it first showed up on the super charged models and then on the NA models I had 2014 engines and those were NA models I have heard of the super charged issues going back to around 2010 but I know they seemed to have the issue corrected late in 2015 or early 2016 I have 2021 engines now
Click to expand...
Awesome. Thanks!
 
How many hours are roughly on the engine?
 
Ouch.........sure looks like timing chain is in trouble. Sorry Man but its rebuildable.
 
I was told my insurance would not cover mechanical failure. Update to my boat, I am having both engines replaced.
 
who is paying for it and why just for future reference
 
I’m paying for it. Insurance said it was mechanical. Might as well have two new engines instead of just one. Will make selling easier. Unless I keep it and sell the 2021 Yamaha I bought. Have not yet decided.
 
So it was a 2015 boat ? there were some serial numbers that had the bad chains if memory serves me correctly and if the engine with the chain issue was in that range of numbers I think you may have a case to discuss with a consumer lawyer this was a well documented issue and also the other engine may be just fine I had a , 2014 hatch a chain at around 360 hours and the other was just fine had nearly 900 hours on it when I sold it with no problems. If the second engine serial number did not fall into the problem list you may be wasting your money . A little research may be worth it.
 
Will look into. Thank you!
 
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