Hi gazza,

Well I wouldn't worry too much about part numbers on that carby as you're not going to get a direct replacement number equivalent. You'll source one from eBay for around $30, but before you go down that road I would work on freeing up that butterfly and assessing the original because if that butterfly becomes fully serviceable then you'll be able to use that one.

Just keep soaking it with "Penetrene" etc. at both top and bottom friction areas, but do not force it via the flat plate on top as you'll bugger up the solid connectivity between the brass shaft and the plate with it becoming loose. Just be gentle with it.

If you have some carby cleaner in a spray can feel free to use that to.

Cheers,
BB.

I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.