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Unread 05-28-2008, 05:19 PM   #1
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Default Cart alternates from running fast to slow.

I have an old Yamaha gas cart and I am ashamed to say I don't know the model. G-3 I think. Anyway it alternates from runnning very fast to so slow it will barely go. It changes suddenly without any advance warning, just like someone flipped a switch. I have had the engine and clutch rebuilt recently and had a carberator cleaning. Nothing seems to work. Any help would be appreciated.
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Unread 05-31-2008, 11:23 PM   #2
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Default Re: Cart alternates from running fast to slow.

Welcome to the forum heavyd..........................

Someone will be with you soon....................
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Unread 06-01-2008, 02:06 AM   #3
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Default Re: Cart alternates from running fast to slow.

As far as my knowledge goes (very little haha) there is no such thing as a G3. It probably either a G1 or a G2.

Does the cart require mixing of oil and gas to operate? That means it is a G1.

Does it run off of strictly gas? That means its a 4 stroke and more than likely a G2.
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Unread 06-01-2008, 06:36 AM   #4
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Default Re: Cart alternates from running fast to slow.

WELCOME TO BGW !!!
I would suspect a carb problem first....take it back to the guy who recently cleaned it 4 a rebuild.
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Unread 06-01-2008, 08:39 AM   #5
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Default Re: Cart alternates from running fast to slow.

Thanks for the input. It runs on straight gas. I bought it used without any paperwork so again I was guessing at the model #. This problem is driving me nuts because it happens so suddenly and is sporadic. I will try to have the carb looked at again.
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Unread 06-01-2008, 09:08 AM   #6
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Default Re: Cart alternates from running fast to slow.

Make sure the fuel and the filter are fresh...
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Unread 06-01-2008, 10:53 AM   #7
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Default Re: Cart alternates from running fast to slow.

Does it look similar to this one? This is a G2

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Unread 06-02-2008, 02:46 PM   #8
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Default Re: Cart alternates from running fast to slow.

Yamaha G3.


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Unread 06-02-2008, 04:41 PM   #9
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Default Re: Cart alternates from running fast to slow.

When it cuts down on power is it more like you let off the gas pedal a little or like you just shut off the engine? Does it backfire or feel like the engine is kicking in/out? I would start with tune up items first.

Is the engine still reving when it cuts out? If so, it may be something as simple as a belt slipping.

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Unread 06-02-2008, 06:29 PM   #10
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Default Re: Cart alternates from running fast to slow.

Quote:
Originally Posted by TheNewGuy View Post
Yamaha G3.

I got PWNED!!
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