2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 179Get this manual
Power Unit Cooling System:
Power Unit Cooling System
Power Head
General Description
Water Cooling System Description
The cooling system uses displacement type flexible vane impeller to supply cooling water to the powerhead assemblyTo prevent incomplete combustion due to an overcooled engine, and to ensure proper water flow during cold engine operation, there is thermostat in the cylinder blockMotor temperature and cooling system efficiency are monitored by cylinder tempsensor and exhaust manifold tempsensor in the cylinderIf temperature higher than normal is detected by sensor, an advance caution of overheat condition is providedZ9J0111601001