2011 Arctic Cat Prowler XT/XTX/XTZ ATV/ROV Service Manual, Page 142Get this manual
CThe thermostat should start to open at 71.0-86.0 (160-187 F)DIf the thermostat does not open, it must be replaced3Inspect all coolant hoses, connections, and clamps for deterioration, cracks, and wearNOTE: All coolant hoses and clamps should be replaced every four years or 4000 miles INSTALLING
1Place the thermostat and O-ring into the thermostat housing; then secure the thermostat housing together with the four machine screws2Fill the cooling system with the recommended amount of antifreezeCheck for leakagePR122A
2Drain the oil from the enginetransmission3Remove the seats and center console; then remove the right-side seat-base4Loosen the coolant hose clamps and slide the clamps away from the hose ends
REMOVING
1Remove the radiator (see Radiator in this section)2Remove the fan assembly from the radiator