Stihl 1139 · Section K · 10 of 13 · 41 parts
Carburetor C1Q-S123C
Fits MS 171, MS 171 C.
Parts (41)
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 1 | 1139 121 5400 | Valve jet | 1 |
| 2 | 4116 121 5100 | Inlet needle | 1 |
| 3 | 1123 121 5602 | Fixed jet 0.46 | 1 |
| 4 | 4128 122 3000 | Spring | 1 |
| 5 | 1125 121 5000 | Inlet control lever | 1 |
| 6 | 1120 121 9200 | Spindle | 1 |
| 7 | 1120 122 6600 | Collar screw | 1 |
| 8 | 4229 129 0901 | Gasket | 1 |
| 9 | 4229 121 4700 | Metering diaphragm → replaced by 4314 121 4700, 4314 121 4700, 4314 121 4700 TI 18/2008 | 1 |
| 10 | 1139 120 0800 | End cover | 1 |
| 11 | 1139 120 7300 | Air valve shaft with lever | 1 |
| 12 | 1139 122 3200 | Torsion spring | 1 |
| 13 | 4282 122 9000 | E-clip | 1 |
| 14 | 1139 126 0300 | Air valve | 1 |
| 15 | 1125 122 7402 | Round head screw | 1 |
| 16 | 1120 122 6601 | Collar screw | 4 |
| 17 | 1139 120 9700 | Pump piston kit | 1 |
| 18 | 1139 121 3300 | Throttle shutter | 1 |
| 19 | 1125 122 7403 | Round head screw | 1 |
| 20 | 1139 122 6800 | Low speed adjustment screw | 1 |
| 21 | 4229 122 6701 | High speed adjustment screw | 1 |
| 22 | 4229 121 2701 | Cap | 1 |
| 23 | 1123 121 7800 | Strainer | 1 |
| 24 | 1125 122 4200 | Clamp | 1 |
| 25 | 1123 121 2904 | Choke shutter | 1 |
| 26 | 1129 121 4800 | Pump diaphragm | 1 |
| 27 | 1123 129 0905 | Gasket | 1 |
| 28 | 1139 121 0800 | End cover | 1 |
| 29 | 1120 122 7800 | Oval head screw | 1 |
| 30 | 1139 120 7200 | Choke shaft with lever | 1 |
| 31 | 1139 122 3202 | Torsion spring | 1 |
| 33 | 1139 122 7101 | Screw | 1 |
| 34 | 1139 122 3201 | Torsion spring | 1 |
| 35 | 4282 122 9000 | E-clip | 2 |
| 36 | 1139 121 3501 | Throttle lever | 1 |
| 37 | 1139 122 3203 | Torsion spring | 1 |
| 38 | 1139 121 3502 | Throttle lever | 1 |
| 39 | 9079 319 0280 | Flat head screw M3x3.5 | 1 |
| 40 | 1139 122 6200 | Idle speed adjustment screw | 1 |
| Not numbered on the diagram — assemblies, kits and options | |||
| — | 1139 120 0607 | Carburetor C1Q-S123C | 1 |
| — | 4229 007 1060 | Set of carburetor parts | 1 |
2012 service parts catalogue. Parts are not interchangeable across engine series — check yours before ordering.
Wrong number or missing part for the MS 171, MS 171 C? Report a correction →