2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 136Get this manual
ELECTRICAL AND IGNITION ELECTRIC STARTER TESTS
Emergency Stop Switch Test
This switch can be incorporated into the key switch or installed as separate switchEither style effectively connects the "M" terminals of the key switchThe emergency stop switch function grounds the stop circuit wire (blackyellow) when the lanyard clip is removedOne "M" terminal is the ground wire (black) and one "M" terminal is the stop circuit wire (blackyellow)4 2
ELECTRIC STARTER TESTS
Starter Solenoid Test
Disconnect the B+ (POS) battery cable at the battery