Johnson Evinrude Outboard Motors 1956-1970 1.5-40hp repair manual., Page 94Get this manual
When this choke valve is closed, very rich fuel mixture is drawn into the engineThe throat of the carburetor is usually referred to as the "barrel Carburetors installed on engines covered in this manual all have single metering jet with single throttle and choke plateSingle barrel carbu retors are fed by one float and chamber4- FUEL SYSTEM
The fuel system includes the fuel tank, fuel pump, fuel filters, carburetor, connecting lines, with squeeze bulb, and the associated parts to connect it all togetherRegular maintenance of the fuel system to obtain maximum performance, is limited to changing the fuel filter at regular intervals and using FRESH fuelEven with the high price of fuel, removing gasoline that has been standing unused over long period of time is still the easiest and least expensive preventive maintenance possibleIn most cases this old gas, even with some oil mixed with it, can be used without harmful effects in an automobile using regular gasolineIf sudden increase in gas consumption is noticed, or if the engine does not perform