Yes

Yes, I wondered that too several years ago and came up with all this metric flow rate. (wrong). The only chain saw place I found around here that the guy even knew what I was talking about, didn't know what it ment either but he knew a 28 was bigger than a 20. Ralph Set me straight on it a couple years ago. But I keep getting it messed up and think its 32nd's (wrong). I had made some posts on here relating to size in 32nds and then I read some of Ralph's posts in a search and noticed it was 64ths. So I went back and corrected the ones I could recently think of the night before rcign made the post above.

I think they change the model # everytime they come back from break. That's the way all Japanese stuff is. They do consistantly make certain models though. The Weed Whacker people are the ones that keep changing the carbs. They will mix and match between Zama and Walbro as well as all variations thereof.

Jim