1994 Johnson Evinrude "ER" 90 LV 120 thru 140, 185 thru 225, 250, 300 Service Manual P/N 500612, Page 197Get this manual

1994 Johnson Evinrude "ER" 90 LV 120 thru 140, 185 thru 225, 250, 300 Service Manual P/N 500612, Page 197

Temperature Switch Test Purpose One heat sensitive switch is installed in each cylinder head to monitor engine temperatureBoth
El the temperature switch from the cylinder head2Using continuity light or ohmmeter, make positive connections to the switchone
lead to the switch lead and one lead to the metal portion of the switch1sl 3Place the switch and an accurate industrial thermometer
in warm automotive crankcase oil4Slowly increase the oil temperature using an external heat source& To avoid possible fire
or explosion: Use suitable container for the oil Use an oil that has flashpoint above 3000 (1500 C), such as OMC Cobra 4-Cyce
Motor Oil Do not use open flame as heat source 5The switch must react to the changing temperature as follows: Wire Color