2001 Polaris SLH, Virage PWC Factory Service Manual, Page 37Get this manual
Maintenance EngineContinued ThermostatPop Off Valve Cleaning
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 soundsthe thermostat pop off assembly should be checked for debris and cleanedInspect the thermostat pop off assembly if the watercraft has been stored for more than 30 days or has been used in salt water
CAUTION: I
Note the location of all parts when cleaning the thermostatpopoff valve assemblyBe sure all parts are positioned correctly during reassembly, or severe engine damage will result within very short period of operation Do not perform this maintenance while the watercraft is in the waterThe thermostat pop off assembly is under tension from an internal spring When the screws are removed, the assembly will come apart quickly if not held together firmly1Using 3161 (.5 cm) hexagonal wrench and flat screwd river, remove screws while holding thermostat pop off assembly firmly togetherCarefully take assembly apartBe careful not to lose any partsInspect thermostat pop off assembly for debris, such as sand or seaweedand clean thoroughly with waterInspect pop off valve for wearSee III1 Inspect condition of gaskets and rubber parts Replace any parts that appear cracked, damagedor distorted Inspect thermostat and housing for corrosionVisually inspect thermostat for damage or distortionIt should be closed at room temperatureInternal Pop-off (Longer End Towards Engine)III1 Thermostat Pop Off Valve