CARBURETOR FLOAT 1395-8673 REC1395-8673

Function and technical context

The carburetor float is an essential floating component of the fuel delivery system on Mercury, Mariner and MerCruiser engines. This piece works inside the float chamber of the carburetor, regulating the petrol level through its vertical movement, which activates or deactivates the fuel metering needle. Its correct operation guarantees a balanced air-fuel mixture in all engine operating conditions, preventing both excess and deficiency of petrol in the combustion chamber. A failure in the buoy causes imbalances in the mixture ratio, causing loss of power, excessive fuel consumption, or in serious cases, engine shutdowns while navigating.

When to replace this part?

The carburetor float must be replaced when it presents symptoms such as difficulty starting, irregular engine operation, excessive fuel consumption without apparent cause, or petrol leaks through the carburetor. Although there is no fixed maintenance interval, it is advisable to check its condition at each seasonal tune-up, especially after prolonged periods of inactivity, since exposure to degraded fuel or the accumulation of residue can compromise its tightness. Preventively replacing the buoy avoids complicated diagnostics at sea and ensures reliable operation of the power system throughout the sailing season.

Engine Compatibility

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers