First of all, I would like to thanks for your prompt help.
I install Cura14.02 and after I print the part everything was change.
The settings were: 0.1 layer, 50mm/s, 210 oC, retraction length 5,5, retraction speed 25 mm/s and I disable combing and at z hop I put 0.1.
The part has no scratch as you can see in the attach picture.
https://www.mediafire.com/?pimnkqq2dt0kdz4
I think if I set up the speed at 30 mm/s the quality will increase more than at 50 mm/s.
What do you know about the quality of the first layer? How can I improve the quality of the top of the part?
Have a good night! Keep in touch.