Section 02 ENGINE
Subsection 04 (COOLING SYSTEM - VEHICLE)
GENERAL
SYSTEM DESCRIPTION
A closed loop cooling system is utilized on all
BRP watercraft engines, which offers an efficient
engine cooling while keeping dirt and salt water
out of the cooling system. This system keeps
the temperature constant and prevents internal
engine corrosion.
A separate co
olant tank ensures that enough en-
gine coolant
is in the circuit during any operating
condition.
The coolant flow comes from the water pump im-
peller into the cylinder block. It goes around the
cylinders a nd straight up to the cylinder head. A
smaller quantity of engine coolant enters the cylin-
der block on the exhaust side for a better cool-
ing. In the cylinder head the water channels flow
around the exhaust and then the intake valves and
leave the engine through a large hose. From there
the coolant goes back to the water pump hous-
ing and depending on the engine temperature, it
flows through the thermostat directly back to the
water pump impeller, or it takes its way through
the heat exchanger.
Engine coolant is also directed towards the oil
cooler (coolant type).
Coolant t
emperature sensor and bleed hose fitting
are locat
ed on the cylinder head.
219100893-013-001_a
1. Bleed hose fitting
2. Coolant tempe rature sensor (CTS)
NOTICE
Never modify cooling system ar-
rangement, otherwise serious engine damage
could occur.
Technical Specifications
TYPE
Closed loop cooling system.
COOLANT FLOW
Flow from water pump.
TEMPERATURE
CONTROL
Thermostat.
SYSTEM
BLEEDING
Self-bleed type through
coolant tank (hose at
uppermost point of circuit).
MONITORING
BEEPER
Turns on at 102°C (216°F)
for 155 and 230 models
and 97.5°C (208°F) for 300
models.
MAINTENANCE
ENGINE COOLANT
WARNING
To avoid potential burns, do not remove the
coolant tank cap or loosen the ride plate drain
plug if the engine is hot.
Recommended Coolant
SERVICE PR
ODUCTS
Scandinavia
EXTENDED LIFE
PRE-MIXED
COOLANT
(EUR) (P/N 779223)
All other countries
EXTENDED
LIFE
PRE-MIXED COOLANT
(P/N 779150)
If THE RECOMMENDED XPS COOLANT
IS NOT AVAILABLE: Use a low silicate,
extended life ethylene-glycol premixed coolant
(50%-50%) specifically formulated for internal
combustion aluminum engines.
NOTICE
Do not use tap water, straight an-
tifreeze or straight water in the system. Tap
water contains minerals and impurities which
build up in the system. Straight water will
cause the system to freeze while straight an-
tifreeze will cause system temperature prob-
lems.
To prevent antifreeze deterioration, always use
the same brand and grade. Never mix different
brands or grades unless cooling system is c om-
pletely flushed and refilled.
219100963-007 51
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