Pierburg 4A1 carburetor cover details:
32 - float; 33 - the axis of the float; 34 - bracket; 35 - needle valve of the float chamber with a clip; 69 - gasket for the carburetor cover of the chamber; 70 - carburetor cover; 71 - sealing gasket; 72 - plate; 73, 74s, 77, 83, 88, 89, 91 - pan head screws; 74 - vacuum plunger assembly; 74a - pressure spring; 74b - cover; 75 - return spring; 76 - axis; 79 - main fuel jet of the 1st chamber; 80 - atomizer; 80a - return spring; 81 - connecting rod; 82 - vacuum damper throttle 2nd chamber assembly; 84 - vacuum hose; 85 - idle air jet; 86 - idle fuel jet.