Stihl 1123 · Section R · 17 of 18 · 44 parts
Carburetor C1Q-S91A, -S92A, -S107A
Fits MS 250, MS 250 C.
Parts (44)
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 1 | 1123 120 0617 NLA | Carburetor C1Q-S91A | 1 |
| 2 | 1123 120 0620 | Carburetor C1Q-S92A | 1 |
| 3 | 1123 120 0626 NLA | Carburetor C1Q-S107A | 1 |
| 4 | 1123 121 5401 | Valve jet | 1 |
| 5 | 1125 122 4200 | Clamp | 1 |
| 6 | 4116 121 5100 | Inlet needle | 1 |
| 7 | 1129 122 3001 | Spring | 1 |
| 8 | 1125 121 5000 | Inlet control lever | 1 |
| 9 | 1120 121 9200 | Spindle | 1 |
| 10 | 1120 122 6600 | Collar screw | 1 |
| 11 | 1123 129 0901 | Gasket | 1 |
| 12 | 1123 121 4700 | Metering diaphragm | 1 |
| 13 | 1123 121 0801 | End cover | 1 |
| 14 | 4132 122 6600 | Collar screw | 2 |
| 15 | 1123 121 7800 | Strainer | 1 |
| 16 | 1129 121 4800 | Pump diaphragm | 1 |
| 17 | 1123 129 0905 | Gasket | 1 |
| 18 | 1123 121 0800 | End cover | 1 |
| 19 | 1120 122 7800 | Oval head screw | 1 |
| 20 | 1123 122 3000 | Spring | 1 |
| 21 | 1123 120 7102 | Throttle shaft with lever | 1 |
| 22 | 1123 121 3305 | Throttle shutter | 1 |
| 23 | 1125 122 9001 | E-clip | 1 |
| 24 | 1123 122 6200 | Idle speed adjustment screw | 1 |
| 25 | 1123 122 6803 | Low speed adjustment screw | 1 |
| 26 | 1123 122 6805 | Low speed adjustment screw | 1 |
| 28 | 1123 122 6701 | High speed adjustment screw | 1 |
| 29 | 1123 121 2700 | Cap | 1 |
| 30 | 1129 121 2701 | Cap | 1 |
| 31 | 1123 120 7200 | Choke shaft with lever | 1 |
| 32 | 1123 122 3202 | Torsion spring | 1 |
| 33 | 1123 121 2904 | Choke shutter | 1 |
| 34 | 1120 122 7400 | Round head screw | 1 |
| 35 | 1125 122 9002 | E-clip | 1 |
| 36 | 1125 122 7403 | Round head screw | 1 |
| 37 | not sold separately | Pump piston not available as a separate item | 1 |
| 38 | not sold separately | Sealing ring not available as a separate item | 1 |
| 39 | not sold separately | Spring not available as a separate item | 1 |
| 40 | 1132 121 7800 | Strainer | 1 |
| 41 | 1132 121 5600 | Fixed jet 0.48 | 1 |
| 42 | 4228 121 5600 NLA | Fixed jet 0.43 | 1 |
| Not numbered on the diagram — assemblies, kits and options | |||
| — | 1123 120 9700 | Pump piston kit | 1 |
| — | 1137 120 9700 | Pump piston kit | 1 |
| — | 1123 007 1060 | Set of carburetor parts | 1 |
2012 service parts catalogue. Parts are not interchangeable across engine series — check yours before ordering. NLA = withdrawn by STIHL before 2012.
Wrong number or missing part for the MS 250, MS 250 C? Report a correction →