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Radiator/Grill Screen
1. Check radiator air passages for restrictions or
damage. Check and clean the radiator grille if
needed.
2. Carefully straighten any bent radiator fins.
3. Remove any obstructions with compressed air or low
pressure water.
Cooling System Pressure Test
System Pressure Test
1. Remove radiator cap cover located under the storage
box access panel. See Chapter 5.
2. Remove recovery bottle hose from coolant filler.
3. Connect a Mity Vac™ (PN 2870975) to radiator and
pressurize system to 10 PSI (68.9 kpa). The system
must retain 10 lbs of pressure for five minutes or
longer. If pressure loss is evident within five minutes,
check radiator, all cooling system hoses and clamps,
or water pump seal.
Radiator Cap Pressure Test
1. Remove radiator cap and test using a cap tester
(commercially available).
2. The radiator cap relief pressure is 13 lbs (89.6 kpa).
RECOMMENDED COOLANT
Use only high quality antifreeze/coolant mixed with
distilled water in a 50/50 or 60/40 ratio, depending on
freeze protection required in your area.
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Coolant Level Inspection
The recovery bottle, located on the left side of the
machine, must be maintained between the minimum and
maximum levels indicated on the recovery bottle.
With the engine at operating temperature, the coolant
level should be between the upper and lower marks on the
coolant reservoir. If not:
1. Remove reservoir cap. Inner splash cap vent hole
must be clear and open.
2. Fill reservoir to upper mark with Polaris Premium 60/
40 Anti Freeze / Coolant or 50/50 or 60/40 mixture of
antifreeze and distilled water as required for freeze
protection in your area.
3. Reinstall cap.
NOTE: If overheating is evident, allow system to cool
completely and check coolant level in the radiator and
inspect for signs of trapped air in system.
MAINTENANCE
Recovery Bottle
2.17
2
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