BORN TO FISH NOT CATCH
If a pwc has been sitting long enough that the needle and seat are gummed up enough to stick, the carb need to be rebuilt. Chances are that small orifices in the carb are also gummed up, and could very possibly create a lean condition.my 93 waverunner 3 would only run if you dribbled gas in the carb so I looked up the diagram for the mikuni MK-BN38/44 SPR carb found the location of the needle and seat under the round diaphragm assembly and was able to remove the carb without disconnecting the fuel lines so I could remove the 4 screws on the cover on the motor side of the carb exposing the needle valve I then gently pushed down on the lever that lifts the needle up to allow gas in and sure enough it was stuck a little and when it poped up fuel instantly began to flow out there by resolving the no fuel to carb problem and then reassembled every thing without having to replace a single part. just so everyone knows the reason I assume the needle got stuck is the waverunner 3 had not been ran in 9 years I hope this will help anyone else with this what seems to be common problem I am posting this because I noticed a lot of people with a similar problem and never realy seamed to get a solution posted. so good luck and be careful out there!