DFuerdivn 3 Packs 640259 Primer Bulb for Tecumseh 640025 640025C 640350 640271 640303 LEV100 LEV105 LEV120 LV195EA LV195XA Lawn Mower carb

What It Is

This is a set of three replacement primer bulbs for Tecumseh carburetors, used to manually pump fuel into the carburetor bowl before starting. Designed for small engines on lawn mowers, snow blowers, and other outdoor power equipment.

Fitment & Compatibility

Check your carburetor model before buying. These bulbs replace Tecumseh part numbers 640259, 640025, 640025C, 640350, 640271, and 640303. They fit carburetors on Tecumseh engines including LEV100, LEV105, LEV120, LV195EA, and LV195XA. Measure the bulb’s stem diameter (approx. 0.25 inches) and overall height (about 0.6 inches) to confirm. Not for Briggs & Stratton, Honda, or Kawasaki carburetors. Verify your carburetor’s primer bulb port shape—some are round, others oval.

Key Things to Know

• Quality: Made of rubber-like plastic; may be slightly stiffer than OEM Tecumseh bulbs. Most users report good sealing and durability.
• Installation: Simple—pry out old bulb (use a small flathead screwdriver), push new one in until seated. No tools required. Takes 2–3 minutes.
• Common gotcha: If the bulb doesn’t snap in firmly or feels loose, the carburetor port may be worn. You may need a new carburetor instead.
• Pack includes three bulbs: Good for multiple machines or as spares, but you only need one per carburetor.

Should You Buy It

If you have a Tecumseh carburetor with a cracked, hardened, or missing primer bulb, this is a cheap, effective fix. It’s ideal for DIYers who want a quick, no-fuss repair on older mowers or snow blowers. Avoid if your carburetor port is damaged or if you need OEM-specific fitment for a non-Tecumseh engine.