a – Base carburetor for air-cooled engines with bowden cable choke. NOTICE carburetor without calibration. From engine S/N 447 UL: 3,940.675, 503 UL: 4,795.201; b – Base carburetor for liquid cooled engines with bowden cable choke. NOTICE carburetor without calibration; From engine S/N 582 UL Mod. 90: 4,656.088, 582 UL mod. 99: starting with serial production; c – Carburetor housing, not available as spare part, use carburetor assy.; d – Jet-needle, see carburetor calibration sheet; e – Idle-jet, see carburetor calibration sheet; f – Needle-jet, see carburetor calibration sheet; g – Main-jet, see carburetor calibration sheet; h – Only necessary on high altitude compensation kit (not available anymore)