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Fuel Flow Restristor Tohatsu 2.5/3.5 etc

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  • Fuel Flow Restristor Tohatsu 2.5/3.5 etc


    Today I had the pleasure of going over a Tohatsu 2.5 engine....circa 1983 Model M2.5A 314.

    I was all set to replace the fuel lines (this one has the factory fuel pump; no integral tank.

    I happened to notice that there is a brass restrictor inserted in the fuel line that runs from the pump to the carburetor. It's just barely visible in there....poked up a half-inch or so from the end of the hose at the carburetor end. Just a tiny little orifice.

    I'm posting here just as a heads up to people.....who knows how many times the fuel line gets replaced without the restrictor. I think the Tohatsu part number for the restrictor is 30904-9040M FUEL ADJUSTING NOZZLE

    I don't know what would happen if the restrictor was left out? Tohatsu Guru would you please comment? What is the purpose of the restrictor and what would be the symptoms of an engine that is missing one?

    Thanks, Seakaye