Section 08 COOLING SYSTEM
Subsection 01 (COMPONENTS AND CIRCUIT)
787 RFI Engines
The 787 RFI engines features a heat exchanger
system. This system allows water coming out of
the cylinder head to circulate through a magneto
heat exchanger and the crankcase heat exchang-
er.
1 2 3 4
smr2005-061-004_a
TYPICAL — GTI RFI MODELS SHOWN
1. Quick connect hose fitting
2. Engine heat exchanger water supply hose
3. Engine drain hose from cylinder heat exchanger
4. Water outlet hose to exhaust outlet
The engine heat exchanger supply hose has a
quick connect hose fitting to facilitate engine
draining.
F02E0BA
1 2
1. Heat exchanger water supply hose
2. Quick connect hose fitting
The water coming out of the engine heat exchang-
er is evacuated at the exhaust outlet for noise re-
duction.
All Models
CAUTION: Never modify cooling system ar-
rangement, otherwise serious engine damage
could occur.
Flushing Procedure
Refer to STORAGE for flushing procedure of cool-
ing system.
Storage Procedure
Refer to STORAGE for winterization procedure of
cooling system.
Hull Servicing
717 Engines
When servicing the hull, always rotate watercraft
counterclockwise (seen from the rear). Rotating
watercraft on the opposite side could allow resid-
ualwaterintunedpipetoentertheengineand
cause damage.
F01L45C
Max. 90°
Other Engines
When servicing the hull, always rotate watercraft
clockwise (seen from the rear). Rotating water-
craft on the opposite side could allow residual wa-
ter in tuned pipe to enter the engine and cause
damage.
smr2005-061 227
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