hello all, i have a 81 650 special it ran about a year ago when it was put away. now that i have taken it out, when i hit the start button it will throw 3 or 4 sparks and then stop. turn it off at the key, back on again and it will do the same thing over. i have checked most of the wires, connections, and the coils. is it possible the cdi box went bad or are the points dirty if it has them. and if so how would i go bout cleaning them any help would be great thankyou russell