Walbro 40-409 Choke Shaft Assembly Carburetor Part

Product Description

The WALBRO 40-409 is a choke shaft assembly designed as a direct replacement component for Walbro carburetors used in small engine applications. The choke shaft assembly controls the choke plate position within the carburetor bore, regulating airflow during cold starts and engine warm-up. This part is installed by small engine technicians, outdoor power equipment service pros, and experienced DIYers performing carburetor rebuilds or repairs. It restores proper choke function when the original shaft becomes worn, bent, or otherwise damaged, helping the engine start reliably in cold conditions.

The WALBRO 40-409 is intended for use in lawn and garden equipment powered by small two-cycle or four-cycle engines fitted with compatible Walbro carburetors. Typical applications include handheld and walk-behind outdoor power equipment such as trimmers, blowers, chainsaws, and similar small engine tools. This part is suited for service facilities and field technicians performing carburetor overhaul or component-level replacement rather than full unit substitution.

Key Features

• Direct OEM-style choke shaft replacement for Walbro carburetor service
• Restores proper choke plate operation for reliable cold-start performance
• Component-level repair option to extend carburetor service life
• Sourced from Walbro, the original carburetor manufacturer

Compatibility

Designed as an OEM replacement choke shaft assembly for compatible Walbro carburetors used in lawn and garden small engine equipment. Consult the Walbro parts lookup or equipment service manual to confirm fitment for your specific carburetor model before ordering.

Installation Notes

Installation should be performed by a qualified small engine technician or experienced service professional. Before disassembling the carburetor, disconnect the spark plug wire and ensure the fuel supply is shut off to eliminate ignition and fuel hazard. Use appropriate carburetor service tools and a clean work surface to avoid losing small components during disassembly. Reassemble according to the equipment manufacturer or Walbro service documentation for the applicable carburetor model.

Technical Specifications

• Component Type: Choke Shaft Assembly
• Application: Lawn and Garden Small Engine Carburetor

Standard Information

• Brand: WALBRO
• Manufacturer Part Number: 40-409