799584 Carburetor Set Replacement for Lawn Mower Carburetor 594058 596505 593261 594057 798452, Compatible with B&S Carb 550EX 725EXI 625EX 675EX 140cc 09P702, with Troy Bilt TB110 TB200 Engines

What It Is

This is a complete carburetor replacement set for Briggs & Stratton 550EX, 725EXI, 625EX, and 675EX series engines (140cc, 09P702). It’s designed for walk-behind mowers, including Troy-Bilt TB110 and TB200 models, and replaces multiple OEM carb numbers.

Fitment & Compatibility

• Check your engine model number – Look for a 12-character code on the valve cover or blower housing (e.g., 09P702). This carb fits B&S 550EX, 725EXI, 625EX, 675EX series only.
• OEM cross-reference – Replaces B&S part numbers 594058, 596505, 593261, 594057, 798452, and 799584. Confirm your original carb number matches one of these.
• Troy-Bilt fit – Works on TB110 and TB200 with the above engines. Not for other Troy-Bilt models without verifying the engine series.
• Not universal – Won’t fit older B&S engines, different displacement, or non-B&S brands. Measure your carb mounting bolt spacing (typically 2.5” center-to-center for these models).

Key Things to Know

• Aftermarket quality – Priced at $19.59, it’s a budget alternative to OEM ($40+). Expect basic machining; some users report needing to adjust the float height or clean out casting debris before installation.
• Installation difficulty – Moderate. Requires removing the air filter housing, fuel line, and two bolts. You’ll need a small flathead screwdriver and possibly a new gasket (gaskets are included, but check thickness).
• Common gotcha – The included fuel line and clamps may not match your mower’s exact diameter. Keep your old line if it’s in good shape. Also, the choke linkage can be stiff out of the box—test movement before mounting.
• Tuning – Most are pre-set, but the idle mixture screw may need a 1/4 to 1/2 turn adjustment for smooth running. Don’t over-tighten the bowl nut—it’s plastic.

Should You Buy It

If your B&S 550EX/725EXI/625EX/675EX mower’s carb is clogged, warped, or leaking and you want a cheap fix without waiting for OEM, this is a solid choice. It’s not for perfectionists—expect minor tweaks—but for $20, it’s a practical drop-in replacement for DIYers who don’t mind a little tuning.