Hey guys,trying to help a fellow quad owner out with his 06 Sportsman 500 with overheating issue. He takes her out on an easy 10 minute ride,then the overheat light comes on - rad fan is running full blast - coolant gurgles at the overflow tank and spews a little. First thing came to mind is to pull the thermostat ? Can it be pulled and not reinstalled just for troubleshooting purposes ? His rad is clean,don't know when a rad system flush has been done,has fresh oil change. Quad has maybe 500 miles on her. Thanks ahead.