Stihl 4180 · Assembly · 11 of 18 · 17 parts
Q - Gear head
Fits FS 91 R-Z.
Source: 03-2025 (United States, English) · FS 91 R-Z · PDF page 27. Check this exact variant and the row remarks before ordering.
Parts (17)
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 1 | 4180 640 0114 | Gear head Contains item(s): 2 - 12 | 1 |
| 2 | 9503 003 0060 | Grooved ball bearing 629 | 1 |
| 3 | 4180 640 7301 | Set of pinions | 1 |
| 4 | 4180 642 0602 | Drive shaft | 1 |
| 5 | 9503 003 6440 | Grooved ball bearing 6201-2RS | 1 |
| 6 | 9456 621 3600 | Circlips 32x1,2 | 1 |
| 7 | 9503 003 9853 | Grooved ball bearing 609-2Z | 2 |
| 8 | 9455 621 0750 | Circlip 9x1 | 1 |
| 9 | 9456 621 2660 | Circlip 24x1.2 | 1 |
| 10 | 4180 641 0800 | Retaining plug | 1 |
| 11 | 9022 341 1371 | Spline screw IS-M6x30 | 1 |
| 12 | 4119 713 6500 | Plug screw | 1 |
| 13 | 4137 710 3800 | Thrust plate | 1 |
| 14 | 4180 710 8500 | Rider plate | 1 |
| 15 | 4126 642 7600 | Collar nut M10x1 l/h thread | 1 |
| 16 | 4130 893 7800 | Locking pin | 1 |
| 17 | 0781 120 1117 | Gearbox grease (80g tube) | 1 |
Parts are not interchangeable across engine series — check yours before ordering.
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