Section 09
COOLING SYSTEM
Subsection 02
(CIRCUIT, COMPONENTS AND CARE)
SMR2003-029_09_02A.FM
09-02-11
CIRCUIT
CAUTION:
All hoses and fittings of the cooling
system have calibrated inside diameters to as-
sure proper cooling of the engine. Always replace
using appropriate Bombardier part number.
717 Engines
A Serial Cooling System is utilized on the
717 en-
gines
, which offers an efficient cooling of the
combustion chamber to prevent the possibilities
of detonation.
The water supply is taken from a pressurized area
in the jet pump between the impeller and venturi.
Water enters the cylinder head, cooling the com-
bustion chamber to prevent detonations. Then,
water exits cylinder head toward tuned pipe.
1. Cylinder head cover
2. Fresh water from jet pump
3. Water exiting head assembly to tuned pipe, exhaust manifold and
cylinders
4. Water from cylinder water jackets exiting engine
The tuned pipe and exhaust manifold are designed
with a double wall to allow water circulation.
Water is pre-heated by the exhaust system before
entering the cylinder cooling jackets.
Water enters cylinder cooling jacket through pas-
sages located below exhaust ports from tuned
pipe.
1. Water passages
No water enters crankcase.
When engine is running, water must flow from
bleed outlet indicating that water circulates.
CAUTION:
When investigating for no water flow
in the cooling system, check all elbows and
straight fittings as well as all hoses for blockage.
For a minimum back pressure in the exhaust, en-
gine water outlet hose is not connected to the ex-
haust. It has its own outlet at the rear of the hull.
Draining of the cooling system is accomplished by
a drain hose located at the lowest point of the cir-
cuit.
717 ENGINES
1. Drain hose
F01E1LA
2
3
1
4
F01D7HB
1
F01E0FB
1
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Summary of Contents for 2003 GTI LE RFI
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Page 767: ...NOTE www SeaDooManuals net ...
Page 768: ...NOTE www SeaDooManuals net ...
Page 769: ...F00Z0D 2003 GTI MODEL WARNING www SeaDooManuals net ...
Page 770: ...F00Z0C 2003 GTI LE MODEL WARNING www SeaDooManuals net ...
Page 771: ...F00Z0E 2003 GTI LE RFI MODEL WARNING www SeaDooManuals net ...
Page 772: ...F00Z0J 2003 RX DI MODEL WARNING www SeaDooManuals net ...
Page 773: ...F00Z0I 2003 GTX DI MODEL WARNING www SeaDooManuals net ...
Page 774: ...F00Z0K 2003 XP DI MODEL WARNING www SeaDooManuals net ...
Page 775: ...F00Z0F 2003 GTX 4 TEC MODEL WARNING www SeaDooManuals net ...
Page 776: ...F00Z0G 2003 GTX 4 TEC MODEL WITH AUXILIARY DESS MODULE WARNING www SeaDooManuals net ...
Page 777: ...F00Z0B 2003 GTX 4 TEC AND GTX 4 TEC SUPERCHARGED MODELS WARNING www SeaDooManuals net ...
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