1998-2004 Yamaha WaveRunner XL700 XL760 XL1200 Factory Service Manual, Page 141Get this manual
''''''''''''''''''''''''''''''''''' '''''' IGNITION SPARK GAP
A WARNING
While making spark check be careful not to touch any of the "Ignition spark gap tester" lead wires When doing the spark test, take special care not to allow leakage from the removed plug cap This check is likely to produce sparks, so be sure that no flammable gas or fluid is in the vicinity
1Check: Ignition spark gap Out of specification Replace