640350 Carburetor Replacement for Tecumseh LEV100 LV195EA LV195XA 5hp 4.5hp 5.5hp 6.0hp 6.5hp 6.75 hp Engine, for Toro 6.5 HP GTS 22IN Recyler Lawn mower Replaces 640303 640271

What It Is

This is an aftermarket carburetor replacement for Tecumseh LEV100, LV195EA, and LV195XA engines, commonly found on Toro 6.5 HP GTS 22IN Recycler lawn mowers and other walk-behind mowers in the 4.5–6.75 hp range. It replaces OEM part numbers 640303 and 640271 to restore fuel delivery and engine starting.

Fitment & Compatibility

• Engine models: Tecumseh LEV100, LV195EA, LV195XA (5hp, 4.5hp, 5.5hp, 6.0hp, 6.5hp, 6.75hp).
• Mower deck size: Typically 22-inch decks (e.g., Toro 6.5 HP GTS 22IN Recycler). Measure your deck width and verify engine model on the engine shroud or label.
• OEM vs aftermarket: This is a non-OEM replacement. It fits the same mounting bolt pattern and fuel line connections as the OEM 640303/640271, but may use slightly different gaskets or jetting.
• What to check: Confirm your engine has a single-barrel, float-style carburetor with a primer bulb (not a diaphragm carb). Measure the mounting hole spacing (approx. 2.5 inches center-to-center) and fuel line diameter (1/4-inch common). Check that your air filter housing and choke linkage match.

Key Things to Know

• Quality variance: Aftermarket carbs often work well but may need minor adjustments—expect to tweak the idle mixture screw (typically 1.5 turns out) and check for fuel leaks at gaskets.
• Installation difficulty: Moderate. You’ll need basic tools (socket set, screwdriver) and maybe a small fuel line clamp. Plan 30–60 minutes. Remove the old carb, transfer the primer bulb and linkage (if not included), and ensure the float bowl is clean.
• Common gotcha: The supplied gaskets may be thin or misaligned. Use a thin layer of gasket sealant or reuse OEM gaskets if they’re intact. Also, the bowl drain screw can be fragile—don’t overtighten.
• Primer bulb compatibility: Some versions include a primer bulb; if yours doesn’t, reuse the old one. Check that the bulb fits snugly to avoid air leaks.

Should You Buy It

Yes, if you have a compatible Tecumseh engine (LEV100/LV195 series) on a Toro or similar mower and need an affordable fix for hard starting, surging, or fuel leaks. It’s a solid budget option for DIY repairs, but expect to spend time on minor adjustments. If you want zero-tolerance fit or have a rare engine variant, stick with OEM.