Leotech wrote:A pal of mine had a genuine PWK and found it really hard to set up whereas I have an OKO and after 2 or 3 changes in jets and needle height its really good.
OKO are quite a serious supplier of PWK carburettor's in the USA & the quality seems good. They make them under license, as do KOSO etc. It's the Chinese versions that are questionable, but even then, they probably make 'their own' versions alongside licensed versions because they would not otherwise have the tooling, technology etc. That is the problem with China. Whilst the Western World remains frantic to take advantage of cheap labour & virtually throw technology their way, they think nothing of ripping off their clients to grab some money back. Not that I'm political in any way.....
I'm beginning to think that PWK's are causing confusion because they seem so easy to set, IMHO. I think I am quite fussy about getting carburation very close to the optimum, with just sufficient safety margin, but I have found that the abscence of a proliferation of expensive parts required to be extremely refreshing.
All that has been required, thus far, is a range of pilot & main jets along with a choice of needles, although only two needle variations have been necessary.
Out of interest, what configuration is your engine & the actual jetting details please?