![]() ![]() As you open the throttle you expose the other two holes and the fuel flows out of those holes. When it is at idle and the throttle is closed, fuel is flowing out that tiny hole in the bottom of the slide slot. Ok so now we should probably discuss how this thing works a bit more. ![]() Because of the way the mid-range is set up on these things, they like to have a little resistance. If you can find a stock air filter that will fit that is probably the best. As far as air filters go, its going to depend a lot on your mounting situation. Clean up everything as well as you can, tooth brush and carb cleaner (and safety goggles). You can leave in the idle screw if you want to, maybe the choke if you're good. ![]() The carb is then tuned by modifying the holes in the emulsion tube and the slide cutaway. The emulsion tube goes back in, the carb gets reassembled, back on the bike. OK so, briefly, what we're going to do here is pretty simple, first dissassemble the carb completely, then we have to pull out the emulsion tube (brass tube thingy in the middle of the venturii), then bore out the inside of the carb. Lever Choke Carb w/ filter- $50 from treats (Jets do not fit) If you can find a bottoming tap that will help, otherwise do the tapping with the emulsion tube removed. The bad is sometimes they need the jet tapped to the correct dellorto jet size. The nice thing is that all the seals and needle are good, most used SHA's will leak and need a new needle. The clone used to be available for $20 so I bought them, but now they cost more. By the time you finish tuning the carb, it doesn't matter if it is an old one or a new one, so I've found the clones to be totally functional. There are also Chinese clones that are out there, possibly Indian as well. Mostly Italian brands, Minarelli, Garelli, Morini, Tomos A35 (very few A3) and some of the later model Motobecane and Peugeot. ![]() SHA carbs come stock from a few different manufacturers. ![]()
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