STROMBERG NAS3A1 O/H PARTS MANUAL Description: The NA-S3A1 carburetor is no longer in production. Only the parts listed are carried in stock. Others may be A-65, A-75, A-80, C-75, C-85 and C-90 engines. Throttle Shaft (Ref. #34 in Manual) not available. Customers Also Viewed; Frequently Purchased With (a) Form No. 15-91B. Handbook Overhaul Instructions, Float Carburetor Model. NA-S3A1 dated 15 December 1958. (b)Courtesy of Bomar Flying Service bomar.biz. Stromberg Carburetor NA-S3A1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8.