MAINTENANCE
2.21
LIQUID COOLING SYSTEM OVERVIEW
Theenginecoolantleveliscontrolledormaintainedbytherecoverysystem. T herecoverysystemcomponents
are the recovery bot t le, radiat or filler neck , radiat or pres sur e cap and connect ing hose.
Ascoolantoperatingtem perat ur eincreases,theex panding(heat ed)excessc oolantisfor cedoutoftheradiat or
pastt hepress ur ecapandint ot herecov erybot t le. Asenginecoolantt emper at ur edecreas esthecontr act ing
(cooled) coolant is drawn back up f rom t he tank past the pressur e cap and into the radiat or.
S Somecoolantleveldroponnewmachinesisnormalasthesystemispurgingitselfoftr appedair. O bserve
coolant levels oft en during the break-in period.
S Overheating of engine could occur if air is not fully purged from system.
S P olaris Pr emium 60/ 40 is alr eady premix ed and ready to use. Do not dilute with water.
COOLANT STRENGTH / TYPE
Test the strength of the coolant using an antifreeze
hydrometer.
S A 50/50 or 60/40 mixture of antifreeze and distilled wa-
ter will provide the optimum cooling, corrosion protec-
tion, and antifreeze protection.
S Donot usetap water,straight antifreeze, or straight wa-
ter in the system. Tap water contains minerals and im-
purities which build up in the system.
S Straight water or antifreeze may cause the system to
freeze, corrode, or overheat.
COOLING SYSTEM HOSES
1. Inspectallhosesforcracks,deterioration,abrasionor
leaks. Replace if necessary.
2. Check tightness of all hose clamps.
CAUTION:Do not over-tighten hose clamps at radiator,or
radiator fitting may distort, causing a restriction to coolant
flow . Radiator hose clamp torque is 36 inch lbs.
RADIATOR
1. Check radiator air 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 page 3.6 for pressure test procedure.
Antifreeze Hydrometer
Polaris 60/40 Anti-Freeze / Coolant
PN 2871323
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