2003 Kawasaki KLF250 Service Manual., Page 268Get this manual
16-26 ELECTRICAL SYSTEM Ignition System WARNING
The ignition system roduces extremely high voltageDo not touch the spark plug, ignition coil, or spark plug lead while the engine is running, or you could receive severe electrical shock
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 damageDo not install the battery backwardsThe negative side is groundedThis is to prevent damage to the diodes and igniterUse the standard regulatorrectifier, or the igniter will be damaged
Spark Plug RemovalInstallation
spark cap Remove the install plugspark[A]using the spark plug Remove or the plug wrench from the vehicle right sideSpecial ToolSpark Plug Wrench, Hex 1857001-1024 TorqueSpark Plug: 14 Nm (1.4 kgfm, 10 ftlb)