Section 03 ENGINE SYSTEM
Subsection 03 (COOLING SYSTEM)
Drain the cooling system. Clean thoroughly using
the Valvoline Zerex Super Cleaner (or equivalent).
Add the cleaning product in coolant expansion
tank then fill cooling system with demineralized
water.
Reinstall cap on coolant expansion tank.
Install watercraft in a water tank or ride on a water
plane. Start engine and run for approximately 15
minutes mostly at full throttle.
IMPORTANT: Ensure thermostat opens so that
the cleaning product flows in ride plate properly.
Stop engine and let the cleaning product work for
12 to 16 hours.
Thereafter, engine can be run one last time to soak
off deposits.
Drain and thoroughly rinse the cooling system
with clean fresh water.
Refill cooling system as described below.
Refilling the System
Watercraft should be level, engine cold and drain
plug removed for refilling.
Place a container under drain plug to collect an-
tifreeze.
Ask someone to pour antifreeze in expansion tank
while watching antifreeze and air bubble flowing
out through drain hole. When no air bubbles
escape, reinstall drain plug. Torque to 8.3 N•m
(73 lbf•in).
1
F18E1LA
1. Pour antifreeze/water mix in expansion tank
1
F18E1KA
1. Watch air bubbles flowing here
Continue to pour and fill expansion tank between
marks.
F18E0NA
1
1. Level between marks when engine is cold
Do not install pressure cap at this time.
Properly cool exhaust system by installing a gar-
den hose. Refer to STORAGE section.
Start engine and let run for 2 minutes. Stop en-
gine and wait 15 minutes to cool down. Refill tank
as necessary.
Repeat this run-stop cycle 2 - 3 times until thermo-
stat opens and stop engine.
smr2005-008 41
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