Honda BF35A-BF45A Outboard Motors Shop Manual., Page 99Get this manual
WONDA BF35A-45A
bINSPECTION
THERMO SWITCHTHERMOMETER )]
1) Suspend the thermo switch in container of coolant or oilBe sure the switch does not touch the container2Heat the liquid and note its temperature when the thermo switch closes and there is continuity between the thermo switch lead and bodyNOTE
Don't allow the thermometer to touch the container
Continuity (ON) No continuity (OFF)
90 2OC minTHERMOSTAT
1 when continuity exists
3-7OC below the temperature
1) Immerse the thermostat in water