2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 388Get this manual

2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 388

6Disconnect the fan wiring from the main wiring harness; then remove the radiatorfan assembly and account for the grommets
or wearINSTALLING HosesThermostat (500650 H1) REMOVING 1Drain approximately one qt of coolant from the cooling system 2Remove
the two cap screws securing the thermostat housing to the cylinder headAccount for an O-ring and thermostatINSPECTING NOTE:
Whenever part is worn excessively, cracked, or damaged in any way, replacement is necessary 1Position the fanfan shroud assembly
on the radiator; then secure with existing hardware2Place the radiator with grommets and collars into position on the frame;
then install the cap screws and nutsTighten securely3Install the upper and lower coolant hoses; then secure with hose clamps
1Inspect the thermostat for corrosion, wear, or spring damage2Using the following procedure, inspect the thermostat for proper