Suzuki DF 90 Service Manual

6-64 POWER UNIT
ENGINE HOLDER
CYLINDER
THERMOSTAT
OIL PAN
OIL PAN
WATER TUBE
ENGINE HOLDER
PROPELLER
EXHAUST OUTLET
DRIVESHAFT
HOUSING
PRESSURE
VALVE
PILOT
WATER HOLE
WATER PUMP
When open
WATER INTAKE
WATER
CYLINDER HEAD
RETURN HOSE
EXHAUST
WATER JACKET
FUEL RETURN
PIPE
INTAKE
MANIFOLD
CRANK CASE
OPERATION
WATER COOLING SYSTEM
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 thermostat.
This system cools both the power unit and exhaust and is shown in schematic from below.
If overheating occurs, the components of the cooling system must be inspected for blockage, corrosion build-
up or component damage.
Component inspection Refer to page
Water pump / Impeller........................... 9-11
Water tube............................................. 7-6
Thermostat ............................................ 6-63
Water pressure valve ............................ 7-20
Cylinder head........................................ 6-26
Cylinder block ....................................... 6-43

Suzuki DF 90 Specifications

General

Brand	Suzuki
Model	DF 90
Category	Outboard Motor
Language	English