I checked the wires and now i can´t find the wire from the battery to the engine earth, where is it located on the engine, in the manual are two earth wires from the battery one to the frame an one to the engine, maybe that could be a problem?
The second thing i noticed is, the spark plug only spark when i push and release the starter button, no matter how long i push it, it only make two sparks, is this ok ?