2003-2005 Kawasaki JetSki Ultra-150 Factory Service Manual, Page 234Get this manual
ELECTRICAL SYSTEM 14-33 Ignition System
Igniter Inspection CAUTION
Do not disconnect the battery leads or any other electrical connections when the ignition switch is on, or while the engine is runningThis is to prevent igniter damageIgnition Coil Primary Peak Voltage Check
electric open it Remove the frontplug capscase and spark plugs and push Pull all the spark from the the caps [A] fully onto the spark plug cap holder [B]
Be sure the battery is fully charged