1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 127Get this manual

1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 127

Temperature Switch Test Purpose heat sensitive switch is installed in the cylinder head to monitor engine temperatureThe
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 switch 3Place the switch and an accurate industrial thermometer
in warm 4-stroke crankcase oil 4Slowly 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 flash point above 3000 (1500 C), such as Johnson or
Evinrude Ultra 4-Stroke Crankcase Oil Do not use open flame as heat source5The switch must react to the changing temperature