CARBURETOR KIT 804346T01

Function and technical context

This repair kit restores full functionality of the carburetor on Mercury, Mariner, MerCruiser and Yamaha marine engines, acting on the fuel supply system. The carburetor is responsible for metering and mixing fuel with air in the exact proportion that the engine requires for optimal combustion. When internal gaskets and seals degrade from prolonged use or exposure to low-quality fuels, internal leaks occur that break this stoichiometric mixture, causing difficult starts, loss of power, excessive fuel consumption and unstable engine operation. Restoring the tightness using this kit returns the carburetor to its precision capacity, improving throttle response and combustion efficiency when sailing in both fresh and salt water.

When to replace this part?

Characteristic symptoms of carburetor wear include difficulty starting when cold, irregular or jerky operation at low speeds, abnormal smoke emission from the exhaust, and presence of fuel in the crankcase or visible leaks in the carburetor connections. It is recommended to check and replace sealing components during seasonal maintenance, especially if the engine has been inactive for several months or fuel of questionable origin has been used. Carrying out this intervention preventively avoids more serious and costly breakdowns in navigation and prolongs the useful life of the carburetor and engine.

Mercury/MerCruiser

Equivalent manufacturer part numbers