Husqvarna Carburetor 577203204 OEM Replacement - Direct-Fit for Select Models, Restores Starting & Idle

This genuine Husqvarna carburetor (part #577203204) is a factory-made replacement designed for models that require this specific part number. Manufactured to the original specifications, it fits select Husqvarna products and several other brands produced by Husqvarna—such as AYP, Craftsman, Jonsered, Partner, Poulan, Poulan Pro, Roper, and Weed Eater—so you get a component built for compatibility and longevity.

How will replacing my old carburetor affect starting and idle performance?

Installing an OEM replacement carburetor typically resolves hard-starting, stalling, and erratic idling caused by worn, clogged, or out-of-spec carburetor components. Because this is a factory part, tolerances and fuel passages match the original design, helping the engine return to expected running characteristics.

• Restores proper fuel/air mixture for easier cold and hot starts.
• Reduces hunting and stalling at idle when installed and adjusted correctly.
• Maintains factory-calibrated jets and passages for consistent throttle response.

Which models and brands are compatible with part #577203204?

This carburetor fits Husqvarna units that list 577203204 as the required replacement. It also fits several other brands built by Husqvarna where the same part number is specified. Always verify fitment with your machine’s model and parts diagram before ordering.

• Direct fit for Husqvarna models requiring 577203204.
• Compatible with Husqvarna-built brands: AYP, Craftsman, Jonsered, Partner, Poulan, Poulan Pro, Roper, Weed Eater.
• Confirm compatibility by checking your equipment’s part list or serial number.

What should I expect during installation and set-up?

Installation is typically straightforward for someone comfortable with small-engine maintenance. Basic hand tools, a clean workspace, and fuel-line precautions are required; after mounting, small adjustments to the idle and mixture screws may be necessary to match local fuel and altitude conditions.

• Remove air filter and old carburetor; transfer gaskets and linkages as needed.
• Use new gaskets and clamps to prevent vacuum or fuel leaks.
• Adjust idle and mixture per your engine’s service manual after installation.

Why choose a genuine OEM Husqvarna carburetor instead of an aftermarket unit?

OEM parts are built to the manufacturer’s original engineering specifications, which can reduce fitment issues and the need for modifications. Choosing the authentic Husqvarna carburetor helps preserve factory performance, ensures correct fuel flow paths, and often provides a longer service life compared with some aftermarket alternatives.

• Exact dimensional and flow tolerances match factory requirements.
• Higher certainty of compatibility with original linkages and mounts.
• Backed by Husqvarna’s design standards for replacement parts.

Who is this for: This part is aimed at owners and technicians who maintain Husqvarna equipment or compatible brands and need a factory-correct carburetor to restore reliable operation. If your saw, trimmer, mower, or other small engine lists part #577203204 as the replacement, this OEM component is a practical choice for accurate fit, maintained performance, and reduced troubleshooting time. If you’re unsure about compatibility, consult your model’s parts diagram or contact a Husqvarna dealer for verification before ordering.