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This 6hp 4cycle Yamaha is 3 months old (the new one with the white cover). I use the built-in tank. The needle valve often now does not close properly. If I do not shut off the fuel valve, sometimes so much fuel runs into the cylinder that it has a liquid lock and can not be turned over. When it runs and the float/needle hangs up, the engine will flood in about 6 seconds when running full throttle and die. I take the carb apart and NOTHING seems to be wrong with it, but surely is. The Yamaha dealer here charged me $60 for transport, but did not fix anything. Motor ran fine for couple of days - then same problem. it does seem to be getting worse actually. HELP!!
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Well, if it ran good for several days, then the float level must be set correctly, so that only leaves the float needle or seat that is faulty....there should be a small screw that holds that float pin in place and the pin sits in a groove....and it needs to be put together carefully to avoid the float hanging up....which sounds like what's happening....best take it apart and double check your assembly....
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