Tecumseh Carburetor

Tecumseh Carburetors: Precision Fuel Delivery for Small Engines

When a small engine hesitates, stumbles, or refuses to start, the carburetor is almost always the first place to look. For the millions of outdoor power machines built around Tecumseh engines, that means trusting the brand that engineered the powerplant in the first place. Tecumseh carburetors and carburetor components are purpose-built to restore the precise air-fuel ratio that keeps lawn mowers, snow throwers, tillers, and garden tractors running at their best.

A Legacy Built Around the Small Engine

Tecumseh has been manufacturing small engines since 1934, and that deep engineering heritage extends directly into its carburetor lineup. Because Tecumseh designed both the engine and the carburetor as an integrated system, genuine OEM Tecumseh carburetors are calibrated to the exact fuel flow, venturi sizing, and idle characteristics each engine platform demands — something an off-brand substitute simply cannot replicate. Whether you're working on a vertical-shaft rotary mower engine or an overhead-valve (OHV) unit powering a garden tractor, Tecumseh offers a matched carburetor designed for that specific application.

Carburetor Series Designed for Every Application

Tecumseh's carburetor range spans several engineered series, each targeting a distinct class of equipment and emission requirement. The Series 7 carburetor is built for medium-frame overhead-valve engines with vertical shafts, featuring mounted main and idle jets positioned inside the bowl for efficient, emission-conscious operation — and all serviceable components can be accessed without removing the carburetor body from the engine. The Series 8 adds a stepped primer bulb and a serviceable main nozzle within the emulsion tube, while Series 9 shares the same body architecture with a common mounted idle system for cleaner combustion. For TVS rotary lawn mower engines, Tecumseh's fixed-venturi carburetors feature a non-corroding float with a Viton-tipped needle valve and primer-assisted cold starting — a particularly useful design in damp or cold-weather conditions.

Complete Carburetor Solutions — From Full Assemblies to Rebuild Kits

The carburetor category covers the full spectrum of service needs. Complete carburetor assemblies — typically supplied with the intake gasket for a drop-in replacement — are available for a wide range of Tecumseh engine models. For owners who prefer to rebuild rather than replace, comprehensive carburetor repair kits bundle the essential internal components: gaskets, diaphragms, seals, float needles, and O-rings. Individual sub-components round out the offering:

• Float assemblies – regulate fuel level inside the bowl and prevent flooding or lean conditions
• Jets and nozzles – restore accurate fuel metering when passages become clogged from stale fuel or varnish deposits
• Primer bulbs and valve kits – cycle fuel through the system before cold starts, reducing cranking effort
• Carburetor gaskets and mount gaskets – maintain airtight seals that are critical to mixture accuracy
• Needle and seat kits – address fuel weeping or hard-start conditions caused by worn valve surfaces

Matching the Right Tecumseh Carburetor to Your Engine

Tecumseh carburetor part numbers — such as 640349, 640350, 640351, 632370A, and 640084B — are model-specific, so always cross-reference your engine's model and type number (found on the engine identification label) before ordering. Using a genuine OEM part ensures the carburetor has been engineered and calibrated specifically for your engine, preserving the fuel efficiency and reliability Tecumseh owners have come to expect. Browse the full selection of Tecumseh carburetors and components and get your outdoor power equipment back in peak operating condition.