799584 Carburetor Fits for Carb TB110,TB200,P702,09P702,103M02, 550EX, 625EX, 675EX, 725EXI 163cc lawn mower replace 594058 594057 592361 594529 799584

What It Is

This is an aftermarket carburetor designed for 163cc Troy-Bilt, Craftsman, and MTD lawn mower engines. It replaces OEM part numbers 594058, 594057, 592361, 594529, and 799584, and is a drop-in fix for fuel delivery problems like hard starting, stalling, or rough idle.

Fitment & Compatibility

• Check your engine model: Fits TB110, TB200, P702, 09P702, 103M02, 550EX, 625EX, 675EX, and 725EXI—all 163cc. Look for a model tag on the engine shroud (near the spark plug).
• Verify OEM number: Match your old carb’s part number against the listed OEMs. This carb fits multiple iterations, but some engines may have minor port or gasket differences.
• Measure mounting holes: Ensure the two bolt holes on the carb flange are 2.125 inches apart center-to-center. Also confirm the fuel inlet fitting is 3/16-inch.
• Brand note: This is an aftermarket part, not OEM. It’s compatible with most 163cc OHV engines from Troy-Bilt, Craftsman, MTD, and Cub Cadet that use a side-draft, diaphragm-style carb.

Key Things to Know

• Quality variance: Build quality is decent for the price, but some units arrive with loose screws or minor casting flash. Inspect and clean the jets before installation.
• Installation difficulty: Moderate. You’ll need a socket set, screwdrivers, and possibly a carburetor gasket. Watch a video for your specific engine—fuel line routing and throttle cable attachment are the trickiest parts.
• Common gotchas: The included gaskets may be thin or misaligned. Use a thin layer of gasket sealant or reuse the old gasket if it’s in good shape. Also, the choke linkage may need slight bending to engage properly.
• Tuning required: After installation, you may need to adjust the idle mixture screw (typically 1.5 turns out from seated) and check the throttle cable tension for smooth operation.

Should You Buy It

Buy this if you have a 163cc Troy-Bilt/Craftsman/MTD mower with a clogged or failed OEM carb and want a cheap, functional fix. It’s not a long-term upgrade—expect 1-2 seasons of reliable use—but at this price, it’s a solid stopgap for DIYers who don’t want to rebuild the original. Skip it if you need a perfect OEM fit or if your engine has a different displacement or carb mounting pattern.