Description
Overview:
This genuine Husqvarna throttle lockout is a safety lever for compatible petrol chainsaws, including the 445 II and 550 XP. It is a moulded, high‐impact polymer component that sits on the rear handle and works with the trigger mechanism to prevent accidental throttle engagement. By requiring deliberate pressure before the trigger can be pulled, it helps maintain control and reduce unintended acceleration. Built to OEM tolerances with the correct geometry for reliable action, it restores factory function on worn, cracked, or missing lockouts. Supplied as the correct Husqvarna part number 544 09 98-01 (544099801), it is suitable for professional forestry use and home users alike, supporting safe, consistent operation across a wide range of Husqvarna chainsaw models.
Key Features:
- Genuine Husqvarna part for assured fit and function
- Prevents unintended throttle activation for safer use
- Durable, fuel- and oil-resistant polymer construction
- Accurate OEM geometry for smooth, positive engagement
- Helps restore correct trigger interlock operation
- Compatible with a wide range of mid-range and pro saws
- Straightforward replacement using basic hand tools
- Designed for long service life in tough outdoor conditions
- Stable performance across temperature changes
- Supports compliance with tool safety best practices
Typical Applications:
Replacement of damaged or missing throttle lockouts during routine servicing, refurbishment of used saws, and preventative maintenance to ensure the trigger interlock operates correctly. Suitable for forestry, arborist work, landscaping, farm and estate maintenance, and general DIY cutting tasks where safe throttle control is essential.
Also known as:
Throttle safety, throttle interlock, throttle trigger lock, trigger safety lever, chainsaw throttle control lever, throttle stop, safety lock lever.
Fits Models:
445, 445 II, 445 e II, 445E, 445II, 445eII, 450, 450 II, 450 e II, 450II, 450eII, 540XP Mark III, 545, 545 Mark II, 545 TrioBrake, 545G Mark II, 545TrioBrake, 550 XP, 550 XPG, 550XP, 550XP Mark II, 550XP Mark II Trio Brake, 550XP Mark II TrioBrake, 550XP TrioBrake, 550XPG, 550XPG Mark II, 550XPG Mark II Trio Brake, 550XPG Mark II TrioBrake, 550XPG TrioBrake, 550XPGTrioBrake, 550XPTrioBrake, 555, 556, 560XP, 560XP Mark II, 560XPG, 560XPG Mark II, 562XP, 562XP Mark II, 562XPG, 562XPG Mark II
Alternate Part Numbers:
544 09 98-01, 544099801
Product Specifications
| L&S Part No. | 544 09 98 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 544099801 |
| Unit of Sale | 1 |
| Applications | 445, 445 II, 445 e II, 445E, 445II, 445eII, 450, 450 II, 450 e II, 450II, 450eII, 540XP Mark III, 545, 545 Mark II, 545 TrioBrake, 545G Mark II, 545TrioBrake, 550 XP, 550 XPG, 550XP, 550XP Mark II, 550XP Mark II Trio Brake, 550XP Mark II TrioBrake, 550XP TrioBrake, 550XPG, 550XPG Mark II, 550XPG Mark II Trio Brake, 550XPG Mark II TrioBrake, 550XPG TrioBrake, 550XPGTrioBrake, 550XPTrioBrake, 555, 556, 560XP, 560XP Mark II, 560XPG, 560XPG Mark II, 562XP, 562XP Mark II, 562XPG, 562XPG Mark II |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 445 | 445E | 445EII | 445II | 450 | 450EII | 545 | 545 TRIOBRAKE | 550XP TRIOBRAKE | 550XP, 550XPG | 555 | 556 | 560XP, 560XPG | 562XP, 562XPG | 550XP Mark II | 540XP Mark III | 545 Mark II | 545G Mark II | 550XPG Mark II | 550XPG Mark II Triobrake | 550XPG Triobrake | 550XP Mark II Triobrake | 560XPG Mark II | 560XP Mark II | 562XPG Mark II | 562XP Mark II |
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