Description
Overview:
This throttle shaft is a replacement control rod for the carburettor on Husqvarna disc cutters, engineered to restore precise throttle movement and stable engine speed. Built from durable metal for long service life, it transfers motion from the throttle linkage to the carburettor butterfly, helping your cutter maintain steady idle and clean acceleration under load. It is designed for Husqvarna K650 and K650 Cut-n-Break machines, and matches Husqvarna reference 505 31 66 19. Replacing a worn, bent, or seized shaft can eliminate sticky throttles, erratic revs, and poor return to idle, improving both cut quality and machine reliability. Suitable for routine maintenance or as a direct swap during a carburettor overhaul when wear in the shaft or bushings is causing play or air leaks.
Key Features:
- Durable metal construction to withstand vibration, heat, and fuel exposure
- Precision fit for smooth throttle action and consistent engine speed control
- Direct replacement for the original shaft; no modifications required
- Helps restore stable idle and crisp response under load
- Supports correct alignment of throttle linkage to reduce wear and play
- Suitable for demanding site conditions typical of concrete and masonry cutting
- OEM reference 505 31 66 19 for straightforward identification and ordering
- Compatible with Husqvarna K650 and K650 Cut-n-Break disc cutters
Typical Applications:
Used during servicing or repair of Husqvarna K650-series disc cutters when throttle response is inconsistent, the trigger feels notchy, or the engine speed hunts at idle. Ideal when rebuilding a carburettor, replacing worn linkage parts, or resolving air leaks caused by shaft wear, to keep cutting performance steady on concrete, stone, or asphalt work.
Also known as:
Throttle rod, accelerator shaft, carburettor throttle spindle, throttle linkage shaft, throttle control rod, carb spindle, throttle actuator shaft. These terms refer to the rotating shaft that drives the carburettor butterfly to regulate engine speed.
Fits Models:
K650, K650 Cut-n-Break
Alternate Part Numbers:
505-31-66-19, 505316619
Product Specifications
| L&S Part No. | 505 31 66 19 |
|---|---|
| Manufacturer | Husqvarna |
| OEM No. | 505316619 |
| Unit of Sale | 1 |
| Machine Type | Disc Cutters |
| Key Features | - Compatible with Husqvarna K650 and K650 Cut-n-Break models - Durable metal construction withstands vibration and heat - Precision fit ensures smooth throttle action - Direct replacement; no modifications needed - OEM reference 505 31 66 19 for easy identification |
| Fits Models | K650 Cut-n-Break |
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