1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 353Get this manual
If both readings on one yellow lead are zerodiode shortedRepeat test procedures between rectifier and lead and to each yellow leadUse same test values 1421
Stator Check Disconnect stator leadsConnect ohmmeter, low ohms scale, between the two yellow leads and check stator resistanceNo reading stator openConnect ohmmeter high ohm scale between common engine ground and one stator yellow leadNo reading (infinity)stator okAny reading, stator shorting to ground OhmmeterLow Ohm Scale Engine Ground