settings

Hi everyone, My 1996 seadoo gtx was not idling before so I decided to set the low speed jets back to factory settings, I currently have them set at 1 1/4 turns on both low speed jets, when I start the jetski it starts and builds up rev's up to about 4500 rpm and then dies, when I pull the spark...

How can I change the settings that are currently in mph and fahrenheit to kph and Celsius or is this a dealer only thing ?