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Old 08-02-2016, 09:33   #1
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New Yahama outboard

I have a new Yahama 9.9 outboard less than 2.5 months old and the carburetor has gone bad and they say it is not covered under warranty. I was sailing from Panama City Florida to the Bahamas and within two weeks the carburetor started giving me trouble, two month later I only had one speed. I took it to a dealer and they said the carb was corroded and was not covered under warranty. They said have been water in the gas but no good explanation as to what I could have done to prevent this and a new carb $396.
I had a Tohatsu 9,9 for 5 years and never gave me these carb problems with the same set up. I was also using Yamalube in the new engine gas.
Anyone else having these problems?
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Old 08-02-2016, 09:37   #2
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Re: New Yahama outboard

Yes, but not that quick, if you were using the gas from the Marina in PC, it's Ethanol free.
I've had good luck using Sta-Bil for years, get the green "Marine" kind, or if you use the red, mix at twice strength, it won't hurt.
An inline fuel filter would most likely have caught the water first too.

I'd be astonished if it were really "ruined", I'd bet a good cleaning is all it needs, maybe replace the jet of something if it is "ruined", but 2 months is too short a time to be ruined, I think.

Maybe try a different Yamaha dealer, but if it is damage from water in fuel, I'd be surprised if that is covered under warranty.
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Old 08-02-2016, 09:37   #3
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Re: New Yahama outboard

I have new Yamaha outboards and true enough, corrosion is not covered under warranty. Have you been using straight fuel, or an Ethanol blend?
Go to Iboats or some internet place and get the piece that is corroded, then re-build the carb using the old and new pieces. Should not be too expensive.
Or look for a used carb on eBay.
Either way, it should not be a $400 problem.
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Old 08-02-2016, 09:38   #4
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Re: New Yahama outboard

This is a four stroke?
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Old 08-02-2016, 09:41   #5
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Re: New Yahama outboard

It could have been sitting at the dealer, before you bought it, with water in the carb and slowly corroded away.
Did you call the dealer you bought it from?
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Old 08-02-2016, 10:41   #6
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Re: New Yahama outboard

I only used ethanol free gas when I could find it in the Bahamas nothing labled and the owners manual says 10% ethanol is OK. I carried 6 five gallon jugs and my main tank was 3 gallons. This was a new four stroke.
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Old 08-02-2016, 10:53   #7
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Re: New Yahama outboard

Go to Iboats, and you'll be able to get the carburettor at a more reasonable price.
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Old 08-02-2016, 17:57   #8
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Re: New Yahama outboard

If a four stroke, then why mix Yamalube with the gas? I doubt that has anything to do with your problem, but curious.


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Old 08-02-2016, 18:04   #9
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Re: New Yahama outboard

Quote:
. I was also using Yamalube in the new engine gas.
Anyone else having these problems?
Good catch a64

I had 2-stroke Yammies but they had an oil tank, no need to mix lube with gas.
Especially NOT with a 4-stroke.

Either a huge typo, or a huge lack of understanding engines..
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Old 09-02-2016, 20:08   #10
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Re: New Yahama outboard

The Yamaha dealer said to use yamalube in .
the gas to clean the carb
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Old 09-02-2016, 20:20   #11
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Re: New Yahama outboard

Yamalube is an umbrella brand name for dozens of products. Telling you to put Yamalube in, is like telling you to put Valvoline or Mobil in it. Too vague to be helpful.

So what exactly were you putting in?

Here's the range :

https://www.shopyamaha.com/

As you can see, it encompasses everything from engine oil to tire black.

I hope you weren't putting Yamalube coolant in the fuel.
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Old 09-02-2016, 22:42   #12
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Re: New Yahama outboard

Quote:
The Yamaha dealer said to use yamalube in .
the gas to clean the carb
Guess it didn't work too good?

Read the fine print: Do not mix any additive to the fuel otherwise the warranty is null and woid.

The carburetor was corroded and the dealer said to add lube to clean it...?

Ouch...
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