1987-2003 Yamaha YFZ350 Banshee supplementary service manual, Page 231Get this manual
4lgnition spark test (With spark plug) Install the spark plug to the plug capGround the spark plug to the cylinder headTurn the main switch to "ON1' and "ENGINE STOP1' switch to then' shift the gear in neutral and set the parking brakeKick the kick crank forcefullyCheck the ignition spark condition "9 "
NO SPARK
5lgnition spark gap test (Without spark plug
and cap) Remove the spark plugs and plug capsHold the spark plug lead mm (0.24 in) from the cylinder headRepeat the aforementioned testCheck the ignition spark conditionI