2001 Polaris SLH, Virage PWC Factory Service Manual, Page 111Get this manual
EngineCooling Cooling System SLHVirage
Thermostat Pop Off Assembly
If low end performance of the watercraft begins to deteriorate, and the jet pump intake area is free of debris and weeds; or if the overheat alarm sounds, the thermostat pop off assembly should be checked for debris and cleanedAlso inspect the thermostat pop off assembly if the watercraft has been stored for more than 30 days or has been used in salt waterTo do this, use 316" (.5 cm) Allen wrench and flat screwdriver
CAUTION:
If the thermostat pop off assembly is reassembled incorrectly severe engine damage will result within very short period of operation
NOTE: Do not perform this maintenance while the watercraft is in the waterThe thermostat pop off assembly is under tension from an internal springWhen the screws are removed, the assembly will come apart quickly if not held together firmly1Remove screws while holding thermostat pop off assembly firmly togetherCarefully take assembly apartBe careful not to lose any parts