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Old 08-07-2019, 08:35 AM   #1
Kit Henry
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Question Yamaha G16 Growling Noise

We have a Yamaha G-16 that we replaced the belt, clutch drive spring last year.
It has developed a growl as it gets in to higher speed.

1st thought was a bearing though nothing moves when wiggled around, or when run up to speed on our lift.

2nd I believe it is coming from the secondary drive that goes to the transmission and not the clutch it's self. This was just greased and made no difference. All the parts are still in the rear drive, the spring, the rubber bushings etc.

Any suggestions ?

Kit Henry
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Old 08-07-2019, 09:24 AM   #2
smallblock450sl
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Default Re: Yamaha G16 Growling Noise

Jacked up with the seat off, run it. Do you see any "wobble" of the secondary sliding sheave as it moves in and out?
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Old 08-09-2019, 06:26 AM   #3
grantspec
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Default Re: Yamaha G16 Growling Noise

I'm having a similar issue on my g9. Just replaced the secondary clutch again and it seems like its still there. Let me know if you get it figured out.

Just curious, what belt are you running?
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Old 08-09-2019, 05:58 PM   #4
Kit Henry
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Default Re: Yamaha G16 Growling Noise

I will have to check though I believe I bought the whole clutch kit through Stens as I'm a dealer
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Old 08-09-2019, 05:58 PM   #5
Kit Henry
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Default Re: Yamaha G16 Growling Noise

Small block will check that
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Old 08-15-2019, 09:48 AM   #6
Kit Henry
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Default Re: Yamaha G16 Growling Noise

Have not done the wobble test, though i found after greasing the back drive, the belt is now covered with grease and is slipping.
Ordering a replacement belt and will brake clean all surfaces.
While the belt is off we will see if we can find any wobble in anything.

kit
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Old 08-15-2019, 01:56 PM   #7
cgtech
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Default Re: Yamaha G16 Growling Noise

Growling noise could be input shaft bearing.
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Old 08-15-2019, 02:33 PM   #8
smallblock450sl
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Default Re: Yamaha G16 Growling Noise

Or worse....damaged input shaft wear sliding sheave rides
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Old 08-27-2019, 09:42 AM   #9
Kit Henry
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Default Re: Yamaha G16 Growling Noise

Running a Dayco belt HP 2015, just installed, still does. Back Home on the, lift think I'm going to pull the secondary clutch.
If you remove the belt the front clutch squeaks just a touch as it begins to engage, and then spins right up
If you run it with the wheels off the ground you get the noised though not as loud. Going to guess it's not there with belt off so secondary clutch ?
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Old 08-27-2019, 09:44 AM   #10
Kit Henry
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Default Re: Yamaha G16 Growling Noise

Running a Dayco belt HP 2015, just installed, still does. Back Home on the, lift think I'm going to pull the secondary clutch.
If you remove the belt the front clutch squeaks just a touch as it begins to engage, and then spins right up
If you run it with the wheels off the ground you get the noised though not as loud. Going to guess it's not there with belt off so secondary clutch ?
Nothing woobles anywhere that I can find.
We use this as a go kart retrival vehicle at the kart track with a small flat bed trailer behind it, if that helps. Went to the white secondary spring.
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