1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 74Get this manual
Manual Primer If the primer is difficult to operate or suspected of not working: 1Remove primer hose from nipple in carburetorInstall hose end into suitable container to catch fuel2Squeeze fuel tank primer bulb to fill carburetor bowls with fuel3 Operate primer pump twice Fuel should squirt from the hoses into the container, indicating primer is functioning4 Inspect primer nipple to ensure nipple is free of obstructions5If primer pump fails to pump fuel from hoses, restricted or kinked hose or inoperative primer pump may be the cause Operate primer pump and watch for fuel squirting from hose If fuel squirts from hose, primer pump is okay; if not, proceed to next stepRemove hose at small nipple on top side of primer pump Inspect hose for kinks or obstructions to flowOperate primer pump; fuel should squirt from small nipple f81 7E.J