Description
Overview:
The Worm (Early Type) for Stihl 026 and 024 (MPN 1121 640 7110) is a genuine Stihl drive gear that powers the oil pump on these chainsaws. This small helical gear sits behind the clutch and transfers rotation to the oiler, helping deliver the right amount of bar and chain lubrication during cutting. Made from a hard‐wearing polymer with a precise moulded profile, it is built to match the original specification for fit and performance. As an OEM component, it offers reliable engagement with the pump and drive system, restoring smooth, consistent oil delivery. Suited to early-type assemblies used on popular mid-range saws such as the Stihl 026 and 024, it is an ideal replacement when the original worm is worn, stripped, or heat-damaged.
Key Features:
- Genuine Stihl OEM part for correct fit and function
- Drives the oil pump to maintain consistent bar and chain lubrication
- Durable, wear-resistant polymer construction for long service life
- Precision helical profile for smooth, efficient operation
- Early-type pattern to suit matching early assemblies
- Helps prevent under-lubrication that can cause bar and chain wear
- Straightforward to replace once the clutch and drum are removed
- Direct replacement for MPN 1121 640 7110 (11216407110)
Typical Applications:
Replacement of a worn or stripped oil pump worm on compatible Stihl chainsaws. Helps restore proper chain oiling for felling, logging, firewood processing, and site work. Useful preventative maintenance when overhauling the clutch side or oiling system to keep the saw running smoothly and to extend guide bar and chain life under regular professional or DIY use.
Also known as:
Oil pump worm, oiler drive gear, oil pump drive, worm gear, pump pinion, lubrication drive gear, chain oiler worm. Commonly referenced during clutch-side servicing and oiling system repairs on Stihl mid-size professional saws.
Fits Models:
024, 026, MS 240, MS 260, MS 260 C
Alternate Part Numbers:
1121-640-7110, 11216407110
Product Specifications
| L&S Part No. | 1121 640 7110 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11216407110 |
| Unit of Sale | 1 |
| Applications | 024, 026, MS 240, MS 260, MS 260 C, MS240, MS260, MS260C |
| Fits Brands | Stihl |
| Fits Models | MS260, MS260C | MS240 | 024 | 026 |
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