799584 594058 Carburetor Kit for 594057 592361 594529, for Troy Bilt TB110 TB200 103M02 09P702 9P702 550EX 625EX 675EX 725EXI 140cc LC121P Engines for Toro 21465 Recycler Lawn Mower 22"

What It Is

This carburetor kit (part #799584/594058) replaces the carburetor assembly on small 140cc–173cc OHV engines, primarily Troy-Bilt TB110/TB200 and Toro Recycler 22" mowers. It includes a new carburetor, gaskets, and sometimes a fuel line—designed to fix hard starting, surging, or stalling from clogged jets or worn seals.

Fitment & Compatibility

Before buying, confirm your engine model and serial number, not just the mower brand. This kit fits:

• Troy-Bilt: TB110, TB200 (models with 9P702, 09P702, 103M02 engines)
• Toro: Recycler 22" #21465 (LC121P engine)
• Other: 550EX, 625EX, 675EX, 725EXI, and 140cc LC121P engines

What to check:

• Engine code (e.g., 103M02-###) – stamped on the valve cover or blower housing.
• Deck size is irrelevant; focus on the engine family and carburetor mounting pattern (two-bolt flange, 1.5" center spacing).
• OEM vs aftermarket: This is an aftermarket kit, but reviews indicate it matches OE fitment. Compare gasket shapes to your old carb—some kits include multiple gaskets for different models.
• Measure the fuel line diameter (usually 1/4" or 5/16") to ensure the included line fits your tank outlet.

Key Things to Know

• Quality: Most users report it runs well out of the box, but a few note the choke linkage may need slight bending for proper operation. Inspect the plastic parts for burrs.
• Installation difficulty: Moderate. You’ll need a socket set and screwdrivers. Clean the intake manifold surface and replace the air filter if dirty. Expect 30–45 minutes.
• Common gotcha: The included gaskets may be slightly thicker than OEM—check for vacuum leaks after install. Use a small dab of fuel-resistant sealant on the bowl gasket if it doesn’t compress evenly.
• Fuel system prep: Drain old fuel and clean the tank before installing. Stale gas is the #1 reason carb kits fail quickly.

Should You Buy It

If your Troy-Bilt or Toro mower won’t start or runs rough and you’ve already cleaned the old carb without success, this kit is a cost-effective solution. It fits common 140cc–173cc engines, comes with all needed parts, and has strong user feedback. Skip it if your engine has internal damage (broken piston rings, low compression) or if you prefer OEM parts for warranty reasons.