In Reply to: Difference in carburetors posted by Jim on August 27, 2020 at 07:16:12:
The best carb kits for M/S units is the TISCO brand and there are a few different ones get from Dennis Carpenter. The NAA/600/700 w/134; used model TSX-428 or TSX-580. DC #EAF-9590-M. DC #31254-M used w/134; 501, 601, 701, 2000 engine, for TSX-765 and TSX-692. Check the hole spread on the carb flange to match with manifold flange face holes. Also, check the sediment bulb -some have it attached to carb, and the fuel line intake elbow. Look in your manuals for pictures of the carbs. As far as internal parts, some changed, larger float, shafts, venturii, gaskets, but don't hold me to that. If you dismantle, keep parts separate.