Catastrophic "water intrusion" in larger Yam. 4-strokes??

islandmanagers

Recruit
Joined
Mar 22, 2007
Messages
5
Hello Board,

Just wondering if any of you have heard of this: A dear friend just showed me the guts of the THIRD of SIX larger Yamaha 4-strokes (200, 225, and 250hp) that he is currently having to perform a "spine transplant" on. Seems if you leave your 4-stroke in the fully-up position for any period of time (say, two days or more), without thoroughly, totally, anally flushing it with fresh water, the joint b/t the powerhead and mid-unit corrodes THROUGH. I'm not talking about abuse or neglect here; we here (in the Central Exumas, Bahamas) use our boats as PRIMARY transportation--it's not uncommon for us to put 300 hours a year on a boat. The engines he showed me had 1450, 1220, and even 680 hours on 'em! He said Yamaha is throwing their arms skyward and saying, "UHHH, IDONNNOW...., but here's yer list of MAJOR parts needed to fix it!"...

this has the potential to majorly suck.....
 

JustJason

Vice Admiral
Joined
Aug 27, 2007
Messages
5,321
Re: Catastrophic "water intrusion" in larger Yam. 4-strokes??

any pictures?
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Catastrophic "water intrusion" in larger Yam. 4-strokes??

I live in the salt pond too, but I havent seen any issues with it yet.
you may wish to use the reference electrode from quicksilver and check the water for stray voltage.
here we also use boats for daily transport,half my cousins dont have a drivers license anymore :).
I have several out there with over 3000 hours and an F150 sold last spring with over 1400 so far.
in season commercial guys will run 8 to 10 hours a day 7 days a week.
so I think there is another issue going on.
 
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