Characteristics of the 1B1 carburetor
| Carburetor type | Kodett D |
| Engine | 12ST |
| Power, kW (hp) | 40 (54) |
| Transmission | MT |
| Number | 9276961 |
| Launch into production | 8/82 |
| Diffuser ∅, mm | 23 |
| Return fuel ∅, mm | 1.0 |
| Air correction jet/mixing tube parameter | 75/17 |
| Main jet | x105 |
| Additional fuel jet | 42,5/147,5 |
| Idle fuel jet | 47,5/140 |
| Enrichment under partial loads in the housing | 57,5 |
Carburetor calibration and adjustment data
| Enrichment at partial loads in intermediate position | 0,3 |
| Identification number of the membrane mechanism of the vacuum regulator of ignition advance | 3,2 |
| Float level, mm | 27±1 |
| Rapid idling speed, rpm | 3600-4000 |
| Throttle clearance, mm/stroke | 0.6-0.7 |
| Air damper clearance, mm | 2.3-2.7 |
| Ignition regulator vacuum at idle speed mBar | 1-20 |
| Idle speed, rpm | 800-850 |
| CO content in exhaust at idle speed % of volume | 0,5-1,5 |
| Idle mixture output 0, mm | 1.3 |
| Amount of injected fuel, cm³/10 strokes | 4.5-7.5 |
| Clearance between sliding shoe and adjusting screw, mm | 0,5 |
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