Hi,
Sorry, I dont know the brand of the carb. It is something starting with a Z. I did have it off once to replace it with a bigger Walbro but that didnt work and I put it back on. I am a Gasser (and by relation conversion) newbie. This engine came from a WeedEater (brand) Leafblower. There is no way to adjust the settings on this carb. The knobs are there but they have a shroud around them and are smooth. Cant even get needle nose pliers on them. I hope I helped, not really sure I did though. Sorry.