Description
Overview:
This Throttle Lockout is a genuine Husqvarna OEM safety component for selected Husqvarna chainsaws, including 333 and 339XP. It is a moulded, hard‐wearing polymer lever engineered to prevent accidental throttle engagement unless deliberately pressed by the operator. By restoring the interlock between the top handle and the trigger, it helps maintain safe handling during felling, limbing, and general cutting work. The part is a direct replacement for worn or damaged lockouts and is built for reliability in professional and domestic use. Its precise fit supports smooth operation of the throttle system and helps reduce downtime during servicing. Genuine status ensures correct dimensions and material quality for long service life on compatible Husqvarna saws.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and function
- Prevents unintended throttle activation to support safe operation
- Durable polymer resists typical workshop and field conditions
- Accurate moulding for consistent, smooth engagement with the trigger mechanism
- Direct-fit replacement; no modifications required on listed models
- Stable performance across common operating temperatures
- Lightweight component that does not affect saw balance
- Suitable for both professional forestry and DIY maintenance tasks
- Supports routine servicing to keep the saw's safety system in good order
Typical Applications:
Replacement of damaged or fatigued throttle lockouts during routine servicing, pre-season checks, or after impact. Used on site, in the workshop, or in the field to maintain the safety interlock on compatible Husqvarna chainsaws. Helps ensure the trigger cannot be engaged unintentionally while carrying, starting, or repositioning the saw.
Also known as:
Throttle interlock, safety lever, trigger interlock, throttle blocking lever, safety throttle latch, trigger safety lever. These terms all refer to the same safety component that works with the throttle trigger to prevent accidental activation.
Fits Models:
333, 336, 339XP, 362, 362XP, 365, 365 X-Torq, 371K, 371XP, 372XP, 372XP X-Torq, 375K, 385, 385XP, 390XP, 394XP, 395XP
Alternate Part Numbers:
503 55 66-01, 503556601
Product Specifications
| L&S Part No. | 503 55 66 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503556601 |
| Unit of Sale | 1 |
| Applications | 333, 336, 339XP, 362, 362XP, 365, 365 X-Torq, 371K, 371XP, 372XP, 372XP X-Torq, 375K, 385, 385XP, 390XP, 394XP, 395XP |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 333 | 336 | 339XP | 362 | 362XP | 365 | 365X-TORQ | 371XP | 372XP | 372XP X-TORQ | 385 | 385XP | 390XP | 394XP | 395XP | 371K | 375K |
