ATV 250 Service Manual page 124

2.Ignition spark clearance
.Remove the spark plug cap from spark plug
.Connect as shown in figure
¢ÙSpark testing instrument
¢ÚSpark plug cap
¢ÛSpark plug
.Rotate the main switch to "ON"
.Check the ignition spark clearance.
.Press down the starting switch to start the engine.
And increase the spark clearance until the engine
can not be started.
Min spark clearance
6.0mm(0.24in)
Not conforming to specification
or no spark
3.Resistance of spark plug cap
.Remove the spark plug cap
.Connect the pocket multitester to spark plug cap
.Inspect if the resistance of spark plug conform to specification
Resistance of spark plug cap:20¡æ(68¡ã
F)4-7K ¦¸
4.Resistance of ignition coil
.Remvoe the ignitioin coil connector from cable
.Connect the pocket multimeter (
coil.
-118-
conforming to specification
)to ignition
¦ ¸ ¡ Á 1
Conformig to specification
Ignition system has no problem
Not conforming to specification
Replace spark plug cap