CARBURETOR 3303-812648T

Function and technical context

The 3303-812648T carburetor is the component responsible for metering and atomizing fuel, mixing it with air in the exact proportions necessary for combustion in small displacement Mercury outboard engines. It operates within the fuel supply system, regulating the flow of petrol from the tank to the combustion chambers of the 2-stroke engine. A poor or worn carburetor directly affects the stability of the engine in all operating regimes, causing difficult starts, excessive fuel consumption and loss of thrust power, especially critical in boats where reliability is essential.

When to replace this part?

Typical symptoms of a bad carburetor include rough idling, jerking during acceleration, difficulty starting cold, and varnish deposits in the fuel lines caused by oxidation of stored fuel. It is recommended to check and clean the carburetor annually before each boating season, and replace it if it presents internal corrosion, persistent blockages or wear on the closure components. Changing this component preventively at the beginning of the season prevents unexpected breakdowns during navigation and guarantees optimal engine operation in all operating conditions.

Engine Compatibility

Compatible Mercury Mariner Engines

Engine Compatibility

Equivalent manufacturer part numbers

Do you have doubts about the compatibility of this spare part? At Marine Parts we know that in nautical there is no room for mistakes. If you need to confirm that this part is correct for your engine, do not hesitate to contact us with the serial number of your equipment.