I am very impressed with the depth of knowledge here. Thanks both Grumpy and bigted. The Type is 0206 and has the same carb as the one I originally read about with photos dealing with the choke linkage part 216 that had been modified by a previous tenant. I have managed to get the B&S owner manual and parts list from their website although the manual only extends to routine servicing. I have ordered air+fuel filters and sparkplug. Will try running without filter later today and take a photo of the carb. Thanks again.