2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 180Get this manual
1F-2 Power Unit Cooling System:
Schematic and Routing Diagram
Cooling Water Circulation Chart
The water cooling system includes the lower unit water pump, lower unit to power unit water supply tube, oil pan water pressure valve, power unit water passages and thermostatThis system cools both the power unit and exhaust and is shown in schematic form belowIf overheating occurs, the components of the cooling system must be inspected for blockage, corrosion build-up or component damageEngine holder Return hose Thermostat open