Description
Overview:
This Spur Gear is a genuine Stihl replacement part for the cutter drive of selected hedge trimmers, including HS 81 and HS 86. Made from durable metal, it transmits power through the gearbox to drive the blades smoothly and efficiently. Proper gearing is essential to keep cutting performance consistent and to prevent premature wear elsewhere in the drive line. As a direct replacement for OEM part number 4237 640 7500, it restores correct mesh and operation when the original gear shows wear, chipped teeth, or excessive play. Built to Stihl's specification for fit and function, it helps maintain dependable trimming performance across professional and domestic use.
Key Features:
- Genuine Stihl part for assured compatibility and reliability
- Direct replacement for OEM 4237 640 7500; no modifications required
- Durable metal construction for long service life under load
- Precision-cut teeth for smooth, low-vibration blade drive
- Helps prevent slipping, clicking, or uneven blade movement
- Supports consistent cutting performance and clean finish
- Designed to fit the intended gearbox housing accurately
- Suitable for regular maintenance or full gearbox overhaul
- Backwards-compatible with listed Stihl hedge trimmer models
- Helps protect adjacent components by restoring correct gear mesh
Typical Applications:
Used during routine servicing or repair of Stihl hedge trimmers when the drive gear is worn, noisy, or damaged. Ideal for restoring blade drive on machines that stall under load, show reduced cutting speed, or produce grinding sounds. Suitable for workshop rebuilds, on-site maintenance, and preventative replacement to minimise downtime in landscaping, grounds care, and garden maintenance.
Also known as:
Drive gear, gearbox spur gear, pinion gear, transmission gear, blade drive gear, gearwheel for hedge trimmer drive, cutter gearbox gear, OEM replacement gear for Stihl hedge trimmers.
Fits Models:
HS 81, HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 82, HS 86, HS 86 R, HS 86 T, HSA 94
Alternate Part Numbers:
4237-640-7500, 42376407500
Product Specifications
| L&S Part No. | 4237 640 7500 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42376407500 |
| Unit of Sale | 1 |
| Applications | HS 81, HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 82, HS 86, HS 86 R, HS 86 T, HS81, HS81R, HS81RC, HS81T, HS81TC, HS82, HS86, HS86R, HS86T, HSA 94, HSA94 |
| Machine Type | Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | HS81, HS86 | HS82 | HSA94 |
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