Stihl 4170 · Section B · 2 of 14 · 23 parts
Valve timing gear
Fits FS 25-4, FS 65-4.
Parts (23)
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 1 | 4170 025 1800 | Inlet valve | 1 |
| 1 | 4170 025 1810 | Inlet valve | 1 |
| 2 | 4170 025 1900 | Exhaust valve | 1 |
| 3 | 4170 025 1600 | Valve spring | 2 |
| 4 | 4170 025 1700 | Valve spring retainer | 2 |
| 5 | 4170 038 0800 | Pin 4x28 | 1 |
| 6 | 4170 038 1000 | Rocker arm | 2 |
| 7 | 4170 038 1100 | Grub screw | 2 |
| 8 | 4170 038 1200 | Hexagon nut | 2 |
| 9 | 4170 038 0100 | Pushrod | 2 |
| 10 | 4170 038 0805 | Pin 5x23.8 | 2 |
| 11 | 4170 030 3000 | Cam | 1 |
| 12 | 4170 038 0900 | Valve lifter | 2 |
| 13 | 4170 038 1300 | Cover | 1 |
| 13 | 4170 038 1310 | Cover | 1 |
| 14 | 9022 313 0680 | Spline screw IS-M4x16 | 5 |
| 15 | 4170 029 0500 | Gasket | 1 |
| 16 | 4170 020 1000 | Valve cover | 1 |
| 17 | 4170 021 2100 | Sleeve | 2 |
| 18 | 9022 313 1030 | Spline screw IS-M5x23 | 2 |
| 19 | 4170 021 2105 | Sleeve | 1 |
| 20 | 9022 341 0960 | Spline screw IS-M5x12 → replaced by 9022 341 0980 TI 3/2006 | 1 |
| 21 | 4170 021 3701 | Guard | 1 |
2012 service parts catalogue. Parts are not interchangeable across engine series — check yours before ordering.
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