I am wondering if anyone has some old Tillotson info on HS carb series applications. I have a saw with a worn (oblong) throttle shaft/bore. Runs well, new seals etc., but did notice the idle would lean at times if I blipped the throttle and it shifted in the bore. I have a couple of carbs that could swap in. Linkage, fuel inlet, needles all in the correct location. I've a HS-104A and a HS-131B. The venturi on the 104 is 15.9mm and the 131, 14.3m. Both are from Terry issue saw carcasses. 131 is from a 9xx series and the 104 from a 1xx series. 131 strikes me as being small for the 9xx, but IDK if it were actually OEM at that size or swapped at one point. I am thinking that 14.3mm would be more in line with the xl-12 series.
The worn carb is a HS-67A from 902. 15.9mm. FWIW, I am attempting to build up the worn shaft with JB-weld and will turn it down. Just for kicks.
Tillotson doesn't appear to list info on those carbs/applications anymore. At least, that I can find.
Thanks folks.