BRP Evinrude E-TEC Series, Service Manual, Page: 161 / 342

159
COOLING SYSTEM
COMPONENTS
9
COMPONENTS
Water Pump and Intakes
External water intakes mounted in the gearcase
housing collect water and must supply the inlet
side of the water pump with an unrestricted and
unaerated water supply. Water is drawn into the
water pump through a hole in the lower plate of
the water pump assembly. All cooling water to the
powerhead is provided by the water pump.
•
A nylon wedge (impeller key) is used to engage
the impeller bushing and driveshaft.
•
The nylon impeller housing with liner must seal
against a separate water pump plate.
•
The bottom plate MUST seal to gearcase.
Refer to WATER PUMP SERVICE on p. 250 for
servicing.
IMPORTANT:
The water pump housing includes
a small vent hole to the side of the water outlet. Be
sure to use the correct parts when replacing the
water pump.
Exhaust Housing
The water pump outlet connects with a water tube
and passages located in the outboard’s midsec-
tion. Grommets seal the water pump housing to
the water tube and the water tube to the exhaust
housing.
Water supplied to the exhaust housing provides all
cooling water to the cylinder block.
1. Water inlet
2. Water outlet
3. Seal
4. Plate
007366
007367
3
2
4
1
1. Hole 007368
1