Trouble getting my Piaggio NRG MC3 Purejet to start

Hi.  I have problems getting my Piaggio NRG MC3 Purejet to start.

I have fuel in the gas tank, and there's no problems with the spark plug.

The starter is running but my engine still won't start.

 

Does anyone know what the problem could be?    [H]

 

You may want to check your engine's compression.