testarossa wrote: Hi Geiz, welcome to KZR! First of all we need to determine exactly which model your bike is. If it is in fact a 1975 then it should be a Z1B. However if the bike's build date is late in 1975, then it is most likely a 1976 KZ900. There is a change in carburetors in between the two models so it will make a difference.
You can check out your vin number here to determine what model you have:
Click me!!!
Once you get that straight, look in the filebase at the top of the page. There is a very good carb document for the KZ900 in there. As well as downloadable service manuals for the Z1 models.
