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this is the edition of PHBG carbs that mount with hose clamps and rubber hose to the intake. this style of mounting can reduce vibrations to the carb and be a little tighter and less prone to air leaks than a clamp style carb that doesn't quite match up. these carbs have three jets, cable choke, air mixture screw, and endless tuning opportunities thanks to a wide variety of needles, throttle slides, jets, etc. they solve many of the problems had with old inefficient carbs on motobecane, peugeot, puch, minarelli, sachs, garelli...
21mm - spigot style - cable choke
the dellorto 21mm DS carburetor generally* comes with this set up so you can plan your tuning (generally = the jets may or may not be exactly the same - the atomizer will be the same for sure)
main jet = 92
idle jet = 50
starter jet = 60
slide = 40
needle = W7
atomizer = 262 AU
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