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Post by wentwest on Mar 24, 2013 15:32:54 GMT -5
I need a new diaphragm for the carburetor in my Xingyue XY260T-4. I think it's the same as a diaphragm for a Yamaha Morphous or Majesty 250, but before I spend the money I want to know for certain. Does anyone know? Also, where's a good place to buy one at a reasonable price?
Lots of info on the old website, but much of it is 5 years old.
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Post by alleyoop on Mar 24, 2013 16:04:09 GMT -5
Question, do you have a CVK carb or a SLIDER type(throttle cable going into the top center of the carb). If the latter haven't seen anyone that carries them if the CVK type yes you can get them.
Alleyoop
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Post by JR on Mar 24, 2013 16:37:05 GMT -5
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Post by wentwest on Mar 25, 2013 0:01:50 GMT -5
So, from this manual it looks pretty good. I was looking to see if anyone knew if it was right. My carb is a constant velocity model with a pin and a vacuum powered diaphragm.
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Post by alleyoop on Mar 25, 2013 0:53:10 GMT -5
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Post by JR on Mar 25, 2013 1:26:11 GMT -5
Sorry, I misread what you were asking for, i thought you wanted a diagram.
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New Rider
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Post by wentwest on Mar 25, 2013 13:45:06 GMT -5
[replyingto=alleyoop]alleyoop[/replyingto]No, that looks like the set for the 244cc Honda clone carb. I have a Yamaha horizontal clone engine. I'll search around those sites again. I was wondering if I got a Yamaha piece that it might be better quality.
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New Rider
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Post by wentwest on Mar 28, 2013 16:40:30 GMT -5
OK, I patched the diaphragm with Shoe-Goo on both sides of the hole and a piece of nitrile glove as a patch on the carb side, not the vacuum side. I think it works. Adjusted the valves, replaced every hose and joint, cleaned out any grit from the fuel pump, replaced the fuel filter with a nice larger one, new spark plug, new air filter, did my best to adjust the a/f mixture.
Once it gets off the enrichener, after a couple of minutes of warm-up, it still has a hesitation miss when you roll on the throttle quickly from coasting or going downhill. There was a time when it felt like it would cut out just cruising on the freeway and when you gave it some throttle it would hesitate and then catch and run well. It accelerates fine once it gets past the hesitation.
I'm at the place where I think it's either:
1)the fuel pump not providing enough gas at idle or coast. It just seems like it should work better then, because that's when there's the most vacuum generally. I remember my 53 Buick had vacuum operated wipers and they would stop on acceleration and go like crazy downhill. or
2) the carb diaphragm is still leaking.
I hate buying parts and throwing then blindly at a problem, so I thought I'd run it by you.
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..BAD TO THE BONE..
