Stihl 1123 · Section Q · 16 of 19 · 46 parts
Carburetor WT-283C, WT-498A, WT-503, WT-313 USA
Fits 021, 023, 025.
Parts (46)
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 1 | 1115 121 5401 | Valve jet | 1 |
| 2 | 4117 122 9402 | Plug | 1 |
| 3 | 1123 121 5640 | Fixed jet 0.53 → replaced by 1130 121 5600 TI 34/2001 | 1 |
| 4 | 1120 121 5600 | Fixed jet 0.56 | 1 |
| 5 | 1123 121 5625 | Fixed jet 0.55 | 1 |
| 6 | 4116 121 5100 | Inlet needle | 1 |
| 7 | 1120 122 3001 | Spring | 1 |
| 8 | 1113 121 5000 | Inlet control lever | 1 |
| 9 | 1113 121 9200 | Spindle | 1 |
| 10 | 1114 122 7400 | Round head screw | 1 |
| 11 | 1120 129 0900 | Gasket | 1 |
| 12 | 1113 121 4705 | Metering diaphragm | 1 |
| 13 | 1113 121 0800 | End cover | 1 |
| 14 | 1106 122 7400 | Round head screw | 4 |
| 15 | 1114 121 7800 | Strainer | 1 |
| 16 | 1121 121 4801 | Pump diaphragm | 1 |
| 17 | 1120 129 0905 | Gasket | 1 |
| 18 | 1123 121 0802 | End cover | 1 |
| 19 | 1114 122 7100 | Screw | 1 |
| 21 | 1123 122 6201 | Idle speed adjustment screw | 1 |
| 22 | 1113 122 3205 | Torsion spring | 1 |
| 23 | 1123 120 7101 | Throttle shaft with lever | 1 |
| 24 | 1123 121 3301 | Throttle shutter | 1 |
| 25 | 1115 122 7400 | Round head screw | 1 |
| 26 | 1117 122 9000 | E-clip | 1 |
| 27 | 1123 122 6802 | Low speed adjustment screw | 1 |
| 28 | 1115 122 3002 | Spring | 1 |
| 29 | 1111 121 8605 | Washer | 1 |
| 30 | 4124 122 3600 | Sealing ring | 1 |
| 31 | 1123 122 3201 | Torsion spring | 1 |
| 32 | 1123 120 7201 | Choke shaft with lever | 1 |
| 33 | 1110 122 7400 | Round head screw | 1 |
| 34 | 1123 122 9000 | E-clip | 1 |
| 35 | 1123 122 3900 | Elbow connector | 1 |
| 36 | 1123 121 2901 | Choke shutter | 1 |
| 37 | 4130 122 3905 | Connector | 1 |
| 38 | 4133 120 8600 | Non-return valve | 1 |
| 39 | 4117 122 6200 | Idle speed adjustment screw | 1 |
| 40 | 1129 121 5600 | Fixed jet 0.50 option | 1 |
| 41 | 1121 121 5604 | Fixed jet 0.48 option | 1 |
| 42 | not sold separately | Fixed jet 0.60 no longer available from factory | 1 |
| Not numbered on the diagram — assemblies, kits and options | |||
| — | 1123 120 0614 | Carburetor WT-503A | 1 |
| — | 1123 120 0610 | Carburetor WT-283C | 1 |
| — | 1123 120 0616 | Carburetor WT-498A | 1 |
| — | not sold separately | Carburetor WT-313 no longer available from factory | |
| — | 1123 007 1061 | 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 021, 023, 025? Report a correction →