1988 Johnson Evinrude CC 60 thru 75 outboards Service Manual, Page 290Get this manual
Key Switch 1Install the cutoff switch cap and lanyard
2Use continuity light or ohmmeter calibrated on high ohms scale to test continuity3Turn the key to the OFF position4Connect meter as shown Meter must show continuity5Turn the key to the ON position Meter must show no continuity6With meter connected as shown, push key in while in the ON and START positions Meter must show continuity Meter must show no continuity when key is released7Place the control handle in NEUTRAL position8With meter connected as shown, turn key to the START position Meter must show continuity Meter must show no continuity when key is released9Test key switch and wiring if your test results vary