2003-2004 GP1300R WaveRunner Service Manual, Page 185Get this manual
IGNITION SYSTEM
IGNITION SPARK GAP
WARNING
When checking the spark gap, do not touch any of the connections of the spark gap tester lead wires When performing the spark gap test, take special care not to let sparks leak out of the removed spark plug cap When performing the spark gap check, keep flammable gas or liquids away, since this test can produce sparks1Check: Ignition spark gap Below specification Check the ECM output peak voltageCheck the ignition coil for resistanceSpark gap: 1011 mm (0.390.43 in)