2003 Kawasaki JetSki 800 SX-R Factory service manual, Page 217Get this manual
ELECTRICAL SYSTEM 13-35 Temperature Sensor
A temperature sensor is installed on the bypass hoseWhenever the cooling water temperature rises to 95 (203or higher, the contacts in the temperature sensor does and the igniter works to cut spark intermittentlyThe engine speed decreases to 500 rpmIf the watercraft slows down even with the throttle on and the engine running, return to shore immediately and check the cooling system for clogging
CAUTION
If the watercraft slows down while running, return to the shore immediatelyOverheating will cause severe engine and exhaust system damageDo not operate the craft until the source of the problem is found and correct