2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 394Get this manual
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COOLING SYSTEM
Water temperature Good condition Thermo switch Less than 75 (167 5.4 F) More than 75 (167 5.4 F) More than 68 3 (154.4 F) Less than 68 4 (154.4 F) Tests2; Heat-up tests Tes