Description
Overview:
The Limit Stop for Stihl HS81R and HS81RC hedge trimmers is a genuine Stihl OEM spare part designed to control the end of travel of the blade drive mechanism. Supplied under MPN 4237 792 9400, it is a hard‐wearing buffer made from a durable polymer/rubber compound that absorbs impact at full stroke. By preventing overextension and metal‐to‐metal contact, it reduces shock, vibration and premature wear on gears, linkages and housings. This small component plays a key role in keeping professional and domestic petrol hedge cutters operating smoothly and safely. It is engineered for accurate fitment in the relevant Stihl HS series gear housing and is straightforward to replace during routine servicing to restore crisp, controlled cutting performance.
Key Features:
- Genuine Stihl OEM component (MPN 4237 792 9400) for exact fit and function
- Prevents over-travel of the blade mechanism to protect drivetrain parts
- Tough rubber/polymer buffer for long service life under repeated impact
- Reduces vibration and harsh end-stop noise for better cutting control
- Helps extend the life of gears, linkages and housings by cushioning impact
- Simple to fit during routine maintenance with standard hand tools
- Direct replacement for worn, cracked or perished limit stops
- Compatible across multiple Stihl HS 81/82/86/87 series hedge trimmers
- Resistant to common workshop oils and fuel splashes
- Suitable for professional landscapers, grounds teams and home users
Typical Applications:
Used when servicing Stihl HS hedge trimmers that show excessive blade slap, increased vibration or harsh end-stop clicks. Ideal for maintaining safe, controlled trimming of hedges, shrubs and topiary in gardens, estates, parks and commercial sites. Commonly replaced as part of preventative maintenance to keep machines reliable and reduce wear on the cutting drive system.
Also known as:
Stop buffer, bumper stop, impact buffer, stop block, blade travel stop, hedgecutter bumper, drive end-stop buffer, mechanical limit buffer.
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, HS 87
Alternate Part Numbers:
4237-792-9400, 42377929400
Product Specifications
| L&S Part No. | 4237 792 9400 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42377929400 |
| 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, HS 87, HS81, HS81R, HS81RC, HS81T, HS81TC, HS82, HS86, HS86R, HS86T, HS87 |
| Machine Type | Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | HS81, HS86 | HS82 | HS87 |
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