640350 640271 640303 carburetor for Toro 20016 20017 20018 22 inch Recycler lawn mower Tecumseh LV195EA LEV120 LV195XA LEV100 5hp 4.5hp 5.5hp 6.0hp 6.5hp 6.75hp Engine Carb Parts

What It Is

This is an aftermarket carburetor assembly designed to replace the OEM unit on Toro 22-inch Recycler mowers (models 20016, 20017, 20018) powered by Tecumseh engines—specifically the LV195EA, LEV120, LV195XA, LEV100, and other 4.5hp to 6.75hp variants. It handles fuel delivery and air-fuel mixing for starting and running.

Fitment & Compatibility

• Engine check first: Verify your Tecumseh engine model (stamped on the blower housing or valve cover). This fits LV195EA, LEV120, LV195XA, LEV100, and similar LV/LEV series engines with 4.5–6.75 hp ratings. It will not work on Briggs & Stratton, Honda, or Kawasaki engines.
• Deck size: Only for 22-inch Toro Recycler decks (models 20016/20017/20018). Measure deck width; if it’s 21” or 24”, this won’t fit.
• OEM vs aftermarket: This is a non-OEM part. The OEM Toro/Tecumseh carb number is 640350, 640271, or 640303. The aftermarket version uses a gasket set that may differ slightly in thickness—check that the mounting flange holes align before tightening.
• Measurements: The carburetor body is roughly 3.5” x 2.5” with a 1.25” intake flange. If your old carb has a different flange pattern or choke linkage style, it’s incompatible.

Key Things to Know

• Quality varies: Most aftermarket carbs work fine, but some have slightly rough castings or sticky float needles. Expect to clean out debris or adjust the float height occasionally.
• Installation difficulty: Moderate. You’ll need to remove the air filter housing, fuel line, and throttle/governor springs. Take photos of linkage positions before disassembly—reassembly is the trickiest part.
• Common gotchas: The fuel inlet barb may be a different angle than OEM—you might need to bend or shorten the fuel line slightly. Also, the choke linkage hole on the aftermarket carb may be slightly off; file it gently if it binds.
• Gasket set included: Most come with a paper gasket and sometimes an O-ring. Use the gasket, but don’t overtighten the mounting bolts—they strip easily in the plastic intake manifold.

Should You Buy It

Buy this if you have a Toro 22-inch Recycler with a Tecumseh LV/LEV engine and your original carb is clogged, leaking, or won’t respond to cleaning. It’s a solid, low-cost fix for a common failure, and the high rating reflects that most users get it running with minor adjustments. Skip it if you’re not comfortable fiddling with linkage alignment or if you prefer OEM reliability for a mower you use commercially.