Husqvarna 530047721 Air Purge Bulb

Product Description

The HUSQVARNA 530047721 is an air purge bulb designed to prime the fuel system on small gasoline-powered outdoor power equipment. Pressing this bulb draws fuel from the tank into the carburetor circuit, reducing the number of pull-starts needed for cold or dry starts. The part is a direct-fit replacement component serviced by licensed small-engine technicians and experienced equipment operators during routine carburetor maintenance or fuel system repairs.

This air purge bulb is used on HUSQVARNA-branded handheld outdoor power equipment including chainsaws, string trimmers, and blowers that use a primer-equipped carburetor. It is a common wear item replaced during seasonal tune-ups or when the original bulb becomes cracked, stiff, or fails to draw fuel properly into the carb circuit.

Key Features

• Direct OEM replacement part for HUSQVARNA outdoor power equipment
• Restores proper fuel priming function to primer-equipped carburetors
• Designed to resist fuel degradation from gasoline and ethanol-blend fuels
• Common service item during seasonal maintenance and carburetor rebuilds

Compatibility

Designed as an OEM-style replacement air purge bulb for HUSQVARNA outdoor power equipment with primer-equipped carburetors. Consult the equipment service manual or HUSQVARNA parts lookup to confirm fitment for a specific model before installation.

Installation Notes

Installation is typically performed by small-engine technicians or qualified equipment operators. Always empty the fuel tank and disconnect the spark plug wire before servicing the fuel system. The bulb is removed and reinstalled using basic hand tools; take care not to tear the fuel inlet and outlet passages when routing fuel lines to the new bulb. Dispose of any residual fuel in accordance with local regulations.

Technical Specifications

• Part Type: Air Purge Bulb

Standard Information

• Brand: HUSQVARNA
• Manufacturer Part Number: 530047721