1971 Johnson 40HP outboards Service Manual, Page 72Get this manual
STARTER CIRCUIT TROUBLESHOOTING PLACE VOLTMETER LEAD TO EACH CHECK POINT IGNSWITCH
COMMON ENGINE GROUND I'
12 VOLT BATTERY
SOLENOID SWITCH STARTER MOTOR
COMMON ENGINE -=GROUND
BE FORE TROUBLESHOOTING 1Checking condition of battery, inspect cables and leads for worn insulation, and check all connections making sure they are tight and cleanSTEPaRemove white lead from safety switch at point Connect voltmeter between point ) and common engine groundbTurn key switch to start positionVoltmeter should show 12 volts
bIf no reading, proceed to STEP3STEPaConnect meter at If meter reads 12 volts, solenoid switch is faultybIf no reading, proceed to STEP4STEPaConnect meter at lead is open between