Stihl 4170 · Section F · 6 of 14 · 34 parts
Carburetor WYL-131, WYL-135
Fits FS 25-4, FS 65-4.
Parts (34)
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 1 | 4170 120 0601 | Carburetor WYL-131 | 1 |
| 2 | 4170 120 0602 | Carburetor WYL-135 | 1 |
| 3 | 4170 120 5000 | Control valve | 1 |
| 3 | 4170 120 5010 | Control valve | 1 |
| 4 | 4170 120 5005 | Control valve | 1 |
| 4 | 4170 120 5015 | Control valve | 1 |
| 5 | 4170 122 6200 | Idle speed adjustment screw | 1 |
| 6 | 4211 122 9000 | E-clip | 1 |
| 7 | 4126 121 8900 | Pin | 1 |
| 8 | 4211 121 8600 | Washer | 1 |
| 9 | 4126 122 6900 | Plug | 1 |
| 10 | 4170 120 1001 | Pump housing | 1 |
| 11 | 1114 121 7800 | Strainer | 1 |
| 12 | 4124 122 3000 | Spring | 1 |
| 13 | 4124 122 7400 | Round head screw | 1 |
| 14 | 1113 121 9200 | Spindle | 1 |
| 15 | 1113 121 5000 | Inlet control lever | 1 |
| 16 | 4116 121 5100 | Inlet needle | 1 |
| 17 | 4124 129 0900 | Gasket | 1 |
| 18 | 4170 129 0901 | Gasket | 1 |
| 19 | 4126 121 4800 | Pump diaphragm | 1 |
| 20 | 1113 121 4705 | Metering diaphragm | 1 |
| 21 | 4124 120 2200 | Flange | 1 |
| 22 | 1120 122 3600 NLA | Sealing ring | 1 |
| 23 | 4133 121 0801 | End cover | 1 |
| 24 | 4124 122 7100 | Screw M3x10 | 2 |
| 25 | 4170 122 7101 | Screw M3x24 | 4 |
| 26 | 4133 121 5200 | Valve | 1 |
| 27 | 4133 121 2700 | Cap | 1 |
| 28 | 4170 121 5401 | Valve jet | 1 |
| 29 | 4170 121 5402 | Valve jet | 1 |
| 30 | 4170 122 3000 | Spring | 1 |
| Not numbered on the diagram — assemblies, kits and options | |||
| — | 4170 007 1066 | Set of carburetor parts | 1 |
| — | 4170 007 1061 | 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 NLA = withdrawn by STIHL before 2012.
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