need some help with a different pjoject

[runaway]

hello
i just bought this yamaha dt 80 mini enduro for 99 doll hairs and the guy said he was riding it for about ten minutes and then shut it off,it now has no spark.

im un sure how to test coil,cdi when testing these item wat do i put my tester on volts or ohms?

[Yamatrike400]

Id check the flywheelkey...thats what happend on my 78 KD100