My 125 would not start. When I turned the key to the on position (before enganging the starter), a strange buzzing noise came from the motor. I could not determine where it was coming from. I then took the spark plugs out, connected them to the wires, and turned the key to the "on" position. I found that when the key is in the "on" position, one of the spark plugs would produce a contininuous "ark", like a welders arc producing the buzzing sound I had heard before. I then turned the key off, and turned the crank a little by hand and then turned the key back to the "on" position. A different spark plug would then produce the continous ark. I am not sure how to proceed. Any help will be greatly appreciated.
