SeaDoo GSX Service Manual download pdf (Page 33)

Section 02 COOLING SYSTEM

Subsection 01 (CIRCUIT)

02-01-1

CIRCUIT 0

947 Engine Cooling System

As with other models, the water supply is provid-

ed by a pressurized area in the jet pump between

the impeller and venturi.

Water is directed to the water jacket of the tuned

pipe head.

1. Water inlet hose

Water circulates in the jackets of the tuned pipe

head and the exhaust manifold. It is consequently

pre-heated by the exhaust system.

Then, water enters the cylinder-block water jack-

ets through passages located above and below

exhaust ports.

1. Water passages

After water has circulated in the cylinder-block

water jackets, it is directed in the 1 piece cylinder

head which features improved combustion cham-

ber and spark plug cooling.

Water exits cylinder head water jackets through

an outlet fitting.

1. Engine water outlet

Water circulates in the water outlet hose and is

expelled out of the cooling system through a fit-

ting located in the jet pump support on the tran-

som of the watercraft.

Draining of the cooling system is accomplished by

the drain hose connected to a fitting at the bottom

of the cylinder-block, on tuned pipe side.

F06E08A

F06D20A

F06D21A

F06E05A

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SeaDoo GSX Service Manual Page 33