Odd noise from my 2013 Yamaha 115 Outboard
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Odd noise from my 2013 Yamaha 115 Outboard
I have an odd noise coming from my 2013 Yamaha 115. To me it sounds like a metal to metal bearing noise. It is sporadic and intermediate. It never happens on start up, only after running the engine for at least a few minutes at normal speeds. Below is a youtube video of an example of the noise over the weekend. It occurs through out the 31 sec video, but the best example of the noise occurs at 24 sec. At times the noise is more consistent, but this was the worse case example from the weekend.
On edit: Forgot to mention that the outboard has 84 hours on it.
https://www.youtube.com/watch?v=WWiXYVK ... e=youtu.be
Thanks!
William
On edit: Forgot to mention that the outboard has 84 hours on it.
https://www.youtube.com/watch?v=WWiXYVK ... e=youtu.be
Thanks!
William
Re: Odd noise from my 2013 Yamaha 115 Outboard
Is your engine still under warranty? If so, run it to your Yamaha dealership.
It's hard to diagnose sounds very often. My little Chromebook speakers are not very good.
Any gear grinding signs usually come from the lower unit as that's where all the gears are. The driveshaft turns all the time from the powerhead down into the gearbox.
It's hard to diagnose sounds very often. My little Chromebook speakers are not very good.
Any gear grinding signs usually come from the lower unit as that's where all the gears are. The driveshaft turns all the time from the powerhead down into the gearbox.
'12 Bennington 24' SSLX Yamaha 150
Re: Odd noise from my 2013 Yamaha 115 Outboard
I was suppose to have a 5 year warranty but my dealership screwed up the paper work. It is currently out of warranty. Though I am still fighting for it...
From what I know about mechanics, I do not believe the sound to be coming from gears grinding. Plus it does it in idle. Unless there are gears before whatever engages the motor into forward or reverse. While I do not know a lot about the internals of outboards, I have been playing with street rods my whole life. That being said, I could be wrong.
It sounds just like the hydraulic throwout bearing that went bad on my street rod a couple years ago. A quiet metal to metal grind, before actual bearing failure. It even acted the same way.
From what I know about mechanics, I do not believe the sound to be coming from gears grinding. Plus it does it in idle. Unless there are gears before whatever engages the motor into forward or reverse. While I do not know a lot about the internals of outboards, I have been playing with street rods my whole life. That being said, I could be wrong.

It sounds just like the hydraulic throwout bearing that went bad on my street rod a couple years ago. A quiet metal to metal grind, before actual bearing failure. It even acted the same way.
Re: Odd noise from my 2013 Yamaha 115 Outboard
Sounds pretty much like our F225 every since we had it 8+ years ago. I'm listening on Bose bookshelf speakers. If you suspect a real issue, run it on Muffs out of the water. After that have a real Yamaha mechanic take a gander to the recording.
When did you begin hearing it?
When did you begin hearing it?
Kenneth & Joy
Lake Conroe, Texas
2007 Bennington 2577RFSi
2006 Yamaha F225
Solas 14.25x17SS prop
Best ever top speed 69.2KPH
Lake Conroe, Texas
2007 Bennington 2577RFSi
2006 Yamaha F225
Solas 14.25x17SS prop
Best ever top speed 69.2KPH
Re: Odd noise from my 2013 Yamaha 115 Outboard
I might even consider draining a bit of lower unit and crankcase oil to inspect. Run it through a coffee filter to look for trash.
Kenneth & Joy
Lake Conroe, Texas
2007 Bennington 2577RFSi
2006 Yamaha F225
Solas 14.25x17SS prop
Best ever top speed 69.2KPH
Lake Conroe, Texas
2007 Bennington 2577RFSi
2006 Yamaha F225
Solas 14.25x17SS prop
Best ever top speed 69.2KPH
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Re: Odd noise from my 2013 Yamaha 115 Outboard
I don't think its lower unit related, either. Pull the hood and run it on a hose/muffs. It sounds like something in the alt/timing belt/tensioner area to me. Spray the belt lighty, with a little brake clean while its running, see if the noise goes away. May just be a glazed belt. If that doesn't do it, I'm gonna guess.... Tensioner bearing!
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Re: Odd noise from my 2013 Yamaha 115 Outboard
From further research on the internet, it seems like this is probably the driveshaft bushing making the noise because the grease has started to wear off. Apparantly there is a bushing above the lower unit that the driveshaft goes through. It needs to be greased with the proper grease or it will squeak in a matter of months. In my case, since I have not replaced or inspected the impeller yet, the grease is showing its age. When ever the lower unit is removed, the driveshaft, splines, and this bushing needs to be greased. I am having a marina replace my impeller next week and thus grease the bushing. Hopefully this fixes the issue. The boat is buoyed on the lake, and I am simply to lazy to pull the boat out of the water to do the work myself.
Re: Odd noise from my 2013 Yamaha 115 Outboard
I will look into this, even though I am pretty confident about it being the bearing. I am going to the lake tonight and take a closer look.Bryden24shp wrote:I don't think its lower unit related, either. Pull the hood and run it on a hose/muffs. It sounds like something in the alt/timing belt/tensioner area to me. Spray the belt lighty, with a little brake clean while its running, see if the noise goes away. May just be a glazed belt. If that doesn't do it, I'm gonna guess.... Tensioner bearing!
Either way, It probably is a good idea to replace the impeller even though I am only at 90 hrs. And this is when that bushing gets greased.