Description
Overview:
The Trigger Interlock is a safety-critical component for Stihl TS400 cut-off/disc cutters. This non-genuine part replaces OEM 4223 182 0800 and restores the lockout function that prevents unintended throttle activation. Moulded from a hard-wearing polymer, it is built for repetitive use and the vibration typical of cut-off saw operation. The precise profile allows smooth engagement and release of the throttle mechanism so the machine only accelerates when the operator intends. It is a straightforward, like-for-like fit for the original part on the TS400, making it suitable for routine maintenance or repair. Ideal for tradespeople and DIY users who need dependable, safe operation on site or at home, it helps keep your cutter compliant with good practice while minimising downtime from worn or broken controls.
Key Features:
- Non-genuine replacement equivalent to Stihl OEM 4223 182 0800 for TS400 cut-off saws
- Restores trigger lockout to help prevent accidental throttle engagement
- Durable, impact-resistant polymer suitable for high-vibration environments
- Accurate moulding for smooth movement and positive engagement with the throttle
- Direct-fit design; installs with basic hand tools and standard workshop practices
- Stable performance under dust, debris, and wet cutting conditions
- Cost-effective maintenance item to extend service life of the handle assembly
- Consistent fit and function to match the form of the original component
- Supports safer operation when starting, idling, and positioning the cutter
- MPN: 72253
Typical Applications:
Used to replace a worn, cracked, or missing trigger interlock on Stihl TS400 cut-off saws used for cutting concrete, masonry, metal, and paving. Suitable for routine servicing, pre-job safety checks, or repairs following impact or wear, helping maintain correct throttle control and safer handling.
Also known as:
Throttle interlock, throttle lockout, interlock lever, trigger safety, throttle safety catch, lockout lever, safety catch.
Fits Models:
TS 400, TS400
Alternate Part Numbers:
4223 182 0800, 42231820800
Product Specifications
| L&S Part No. | 400 229 |
|---|---|
| Part Type | Non Genuine Part |
| OEM No. | 72253 |
| Unit of Sale | 1 |
| Machine Type | Disc Cutters |
| Fits Brands | Stihl |
| Key Features | - Non-genuine replacement for Stihl OEM 4223 182 0800 - Restores trigger lockout on TS400 cut-off saws - Durable polymer for high-vibration environments - Direct-fit design for easy installation - Suitable for routine maintenance or repairs |
| Fits Models | TS400 |

