2003 Bombardier Outlander 400 Factory Service Manual, Page 53Get this manual
Section 03 ENGINE Subsection 02 (TROUBLESHOOTING)
SYMPTOM CONDITION TestInspection
HIGH ENGINE OPERATING TEMPERATURENORMAL USE10Check cylinder head andor cylinder base gasketaWorn out gasket(s) is (are) causing water leakageReplace gasket(s) and refill with coolant and oil (refer to COOLINGLUBRICATION SYSTEM and TECHNICAL DATA)11Check intermediate gear(s) behind magneto coveraWorn out andor broken gear(s) is (are) causing less coolant supplyReplace worn out andor broken gear(s) (refer to LUBRICATIONMAGNETO SYSTEM)