Originally Posted by KCL

Taking a look at a bike for a friend, had a recent to end job from the dealer. The bike ran for awhile, then started cutting out. Now it doesn't want to start and when it does it just can't rev up. I checked;air filter, gas flow, compression, and verified the spark while kicking it over. Could it still be something electrical "coil" maybe, or what should I do next ? Thanks.