Don't you just love these fly by night Chinese OEMs. Pop up make a ship load of equipment and then disappear leaving us that repair equipment to look miracle workers at times.
And this is a world wide problem too. We here have the same problem with manufactured in China and Far East countries. No wonder our landfills is so full thing that otherwise be repairable if only the parts were available.
Now that part number is a Yamaha 7NJ-14101-10-00 superseded to 7CN-E4101-11-00.
EF1600X 7NH2 EF2600X 7NJ2 YG2600X 7NP1 GENERATOR 1996
EF1600A 7RR2 EF2400A 7RS2 GENERATOR 1997
EF2600A 7UU2 GENERATOR 1999
YP20/30GX 1996
YP20TA Q9C4 YP30TA Q9C5 YP40TA Q9C6
So this might help looking any of the other engine parts.
Now here is a good question which CS6 Spec does this fits as there are different carburetor setups on some of them? With the correct I could find the Kohler part number.