Replacing thermostat on 115hp Yamaha 1997 - 2CoolFishing
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Old 01-07-2021, 06:31 PM   #1
pick44
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Replacing thermostat on 115hp Yamaha 1997

I have seen the videos on how to replace and it doesn't look that hard. I am not a boat mechanic, but will to give it a go. I cannot find which thermostat I need.
My yamaha is the TLRV Model, but I cannot find that when looking for the correct thermostat.

What am I missing?
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Old 01-07-2021, 06:34 PM   #2
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6e5-12411-20-00
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Old 01-07-2021, 06:41 PM   #3
pick44
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Thank you
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Old 01-07-2021, 06:48 PM   #4
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I see it being sold 12411-20-00 as New 12441-30-00. Is this the one?
I also will order the gasket. Thanks again
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Old 01-07-2021, 06:49 PM   #5
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Very easy to replace. Remember you have two thermostats on your motor.
I’ve ordered from boats.net when I had my 2003 Yamaha 115hp.


Gasket
https://www.boats.net/product/yamaha...a9b0c9ff6953ee

Thermostat
https://www.boats.net/product/yamaha...4dadca63c117b6
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Old 01-07-2021, 06:52 PM   #6
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So I need to order two of the thermostats and two gaskets. Are they the same number 12411-20-00 New as 12411-30-00?

I would normally take to my mechanic but I might be out of pocket and need to get it done soon. So, I will try it. I will have to find the other thermostat on my motor.

Thanks
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Old 01-07-2021, 07:02 PM   #7
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Quote:
Originally Posted by pick44 View Post
So I need to order two of the thermostats and two gaskets. Are they the same number 12411-20-00 New as 12411-30-00?

I would normally take to my mechanic but I might be out of pocket and need to get it done soon. So, I will try it. I will have to find the other thermostat on my motor.

Thanks

They are the same part number, 12411-20. The gaskets will probably tear apart so order those as well. The thermostat housing is on top of each cylinder head. Kind of a squared shape. Find the engine schematic on boats.net or sim Yamaha it will help a ton.


Don’t over think it, very easy job to replace them.
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Old 01-07-2021, 07:09 PM   #8
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Ok thanks. I am going to do this.
blessings, ><>
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Old 01-10-2021, 12:24 AM   #9
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https://www.boats.net/catalog/yamaha.../1997/c115tlrv https://www.boats.net/catalog/yamaha...er-crankcase-2
THERMOSTAT 6E5-12411-20-00 In Stock$27.65 $23.95


GASKET, COVER 688-12414-A1-00 In Stock$4.85 $4.59
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Old 01-10-2021, 10:31 AM   #10
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I would also go ahead and get after the poppet valve while you're in there...
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