20339 CarburetorFor 163cc Toro 22" Recycler w/SmartStow Mower Compatible with B&S Engine

What It Is

This is a replacement carburetor for Toro 22" Recycler mowers with SmartStow, equipped with a 163cc Briggs & Stratton engine. It mixes air and fuel for combustion, restoring smooth starting and steady running when the original clogs or fails.

Fitment & Compatibility

• Engine: Fits Briggs & Stratton 163cc engines (typically model series 450E, 500E, or 550E). Confirm your engine model number (stamped on the blower housing or valve cover).
• Mower: Toro 22" Recycler with SmartStow (models 20339, 20340, 20341, and similar). Not for non-SmartStow or different deck sizes.
• OEM vs Aftermarket: This is a direct replacement aftermarket part. Check that your mower uses a standard bowl-type carburetor (not a non-adjustable EPA design). If original has a fixed jet, this may still work but adjust idle screw carefully.
• Measurements: Gasket surfaces and mounting bolt spacing match OEM. Includes gaskets—verify intake port shape matches your engine’s manifold (flat vs. stepped).

Key Things to Know

• Quality: Generally reliable for the price, but some units may need float height adjustment or have minor casting flash. Inspect before installing.
• Installation difficulty: Moderate (30–60 minutes). Requires removing the air filter cover, fuel line, and two bolts. Have a small wrench set and needle-nose pliers ready.
• Common gotcha: The included gaskets can be thin—use OEM gaskets if you have them, or apply a thin layer of fuel-resistant sealant on the carb-to-manifold joint.
• Fuel system prep: If your old carb failed due to debris, flush the fuel tank and line before installing to prevent repeat clogging.

Should You Buy It

Yes, if your Toro 22" Recycler with SmartStow has a 163cc Briggs engine and the original carburetor is unreparable or cost-prohibitive to rebuild. It’s a budget-friendly fix for hard starting, stalling, or rough idle, but expect minor fitment tweaks. Skip if you need an exact OEM match or have a different engine series.