Description
Overview:
The Trigger Interlock for Stihl hedge trimmers is a small but vital safety component that prevents the throttle from engaging unless the operator has a secure grip. Supplied as a Genuine Stihl part, OEM 4237 182 0800, it is made from a tough, wear‐resistant polymer designed to handle frequent use in outdoor conditions. It interfaces with the throttle trigger and handle mechanism to reduce the risk of accidental activation. This interlock is a direct replacement for worn or damaged parts on popular professional and domestic trimmers, including the HS 81 R and HS 81 RC. Fitting a correct, high‐quality interlock helps maintain the tool's intended safety function and smooth control during hedge cutting tasks.
Key Features:
- Genuine Stihl part for correct fit and function
- OEM reference: 4237 182 0800 for easy identification
- Safety lockout design helps prevent unintended throttle engagement
- Durable injection‐moulded polymer resists wear, impacts, oil, and fuel splashes
- Precisely moulded to match original handle geometry for reliable engagement
- Straightforward like‐for‐like replacement with no modification required
- Supports consistent throttle control and starting procedure
- Suitable for routine maintenance to restore factory operation on compatible models
- Stable performance in typical garden and site environments
Typical Applications:
Used on Stihl petrol hedge trimmers to restore the trigger lockout function after wear, breakage, or loss. Ideal for professional grounds maintenance, landscaping, and domestic hedge care where safe, controlled activation of the throttle is required during trimming and shaping work.
Also known as:
Trigger lock, safety lock, throttle lockout, interlock lever, safety catch, operator‐presence lock, throttle safety, lockout lever.
Fits Models:
HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 82, HS 86 R, HS 86 T
Alternate Part Numbers:
4237-182-0800, 42371820800
Product Specifications
| L&S Part No. | 4237 182 0800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42371820800 |
| Unit of Sale | 1 |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part ensures correct fit and function - OEM reference 4237 182 0800 for easy identification - Safety lockout design prevents unintended throttle engagement - Durable polymer resists wear, impacts, oil, and fuel - Fits HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 82, HS 86 R, HS 86 T |
| Fits Models | HS81, HS86 | HS82 |


