Cooling System - Polaris Sportsman 400 Service Manual

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COOLING SYSTEM

WARNING: Never remove radiator cap when engine is warm or hot. The cooling system is under pressure and

serious burns may result. Allow the engine and cooling system to cool before servicing.

- projex@inbox.lv -

System Pressure Test

1. Remove front cover.

2. Remove recovery bottle hose from coolant

3. Connect a Mity Vac™ (PN 2870975) to

radiator and pressurize system to 10 PSI. 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

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.

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