No ignition spark? Check the ground connectors inside the e-box where the ignition coils are, sometimes they will be lose or corroded.
It's possible the stator ignition trigger is defective, there should be a small AC voltage signal while cranking engine, this signal is used to fire the CDI ignition. Procedure for measurement is in the 2001 XP jetski factory service manual available for online download.
Make sure your spark plugs are known good and aren't fouled, this is very common.