2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 57Get this manual
RADIATOR CAPSYSTEM PRESSURE TEST
1Remove radiator cap and test using cap tester (commercially available)2The radiator cap relief pressure is 13 lbsfor all modelsCOOLING SYSTEM
COOLING SYSTEM SPECIFICATIONS
Thermistor 26 2.1 ft.lbs(35 Nm)
Pressure test here with cap in place