Polaris SPORTSMAN 600 2003 Service Manual page 39

MAINTENANCE MAINTENANCE
LIQUID COOLING SYSTEM
OVERVIEW
The engine coolant level is controlled or maintained
by the recovery system.
components are the recovery bottle, radiator filler
neck, radiator pressure cap and connecting hose.
As coolant operating temperature increases, the
expanding(heated)excesscoolantisforcedoutofthe
radiator past the pressure cap and into the recovery
bottle. Asenginecoolant temperature decreasesthe
contracting(cooled)coolantisdrawnbackupfromthe
tank past the pressure cap and into the radiator.
G
Some coolant level drop on new
machines is normal as the system is
purgingitself of trappedair. Observe
coolant levels often during the
break-in period.
G
Overheating of engine could occur if
air is not fully purged from system.
G PolarisPremium60/40anti--freezeis
premixed and ready to use. Do not
dilute with water.
COOLANT STRENGTH / TYPE
Test the strength of the coolant using an antifreeze
hydrometer.
Antifreeze Hydrometer
G
A 50/50 or 60/40 mixture of
antifreeze and distilled water will
provide the
corrosion protection, and antifreeze
protection.
G Do not use tap water. Tap water
contains minerals and impurities
which build up in the system. Do not
add straight antifreeze or straight
water to the system. Straight water
or antifreeze may cause the system
to freeze, corrode, or overheat.
Polaris 60/40 Anti-Freeze / Coolant
(PN 2871323)
The recovery system
optimum cooling,
COOLING SYSTEM HOSES
Inspect all hoses for cracks, deterioration, abrasion or
leaks. Replace if necessary.
1. Check tightness of all hose clamps.
2. Do not over-tighten hose clamps at radiator or
radiator fitting may distort, causing a restriction or
leak. Radiator hose clamp torque is 36 in. lbs. (4
Nm).
RADIATOR
1. Check radiator external air flow passages for
restrictions or damage.
2. Carefully straighten any bent radiator fins.
3. Remove any obstructions with compressed air or
low pressure water.
COOLING SYSTEM
PRESSURE TEST
Refer to Chapter 3 for pressure test procedures.
2.17