Ignition system of a small engine

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Across
  1. 5. flow of electrons from one atom to another
  2. 6. this may be used to make electricity
  3. 7. the spark plug fits into this engine part
Down
  1. 1. this is where the small amount of electricity in the primary wire is changed to high voltage electricity
  2. 2. breaker points are usually found under this engine part
  3. 3. this wire is connected to the spark plug
  4. 4. when breaker points are closed electricity flows through this
  5. 8. when current jumps an air gap, this is created