2011 Polaris Ranger RZR ATV Service Manual, Page 61Get this manual
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ENGINE ENGINE COOLING SYSTEM
Specification RZRRZR RZR 4.8 qts(4.5 l) 5.5 qts(5.2 l) 13 PSI 3 The system must maintain 10 psi for five minutes or longerIf pressure loss is evident within five min