2005 Kawasaki KAF620 Mule 3010 Trans 4x4 Service Manual, Page 90Get this manual
4-8 COOLING SYSTEM Flow Chart
1Filter 2Thermo Valve 3White Mark 4Coolant Inlet 5Coolant Outlet 6Level the tube to the inlet pipe7Do not bulge the tube as dotted line8Face the projection on the valve body to the carburetor.