1971 Johnson 2HP outboards Service Manual, Page 17Get this manual
OEseRI PTiON
The fuel system consists of fuel tank mounted on the power head, fuel filter, and car buretorFuel flows, gravity-fed from the tank to the carburetorCARBURETOR The carburetor is single-barrel, float feed typeThe high and lowspeed jets are adjustableThe carburetor has manual chokeThrottle linkage is synchronized with' the magneto by cam on the magneto armature plate
THEORY OF OPERATION