Fuji area

1.For Fuji area are 2 full days ok?(the third day we spend in Hakone)
We intend to drive to the 5th station and to visit 1-2 lakes.maybe to ride a mountainbike there.
Where can I travel from the Fuji area?Does the Fuji Hakone pass cover also the 5th st.?

For Fuji area are 2 full days ok?

Yes.

Where can I travel from the Fuji area?

I don't understand the question.

Does the Fuji Hakone pass cover also the 5th st.?

No, the bus to the 5th Station is not covered.

I meant in the question where can I travel from the Fuji area: are there recommanded places not far from Kawaguchiko and the lake district that can be reached with the JR card or bus for a half day or full day trip?

are there recommanded places not far from Kawaguchiko and the lake district that can be reached with the JR card or bus for a half day or full day trip?

Transportation in the Fuji Five Lake region is not JR. Therefore, the Japan Rail Pass is of little use.

If you have only two days, there is enough to see in the Fuji area itself. But if you wish to make trips into nearby areas, possible options are the Kofu area with Shosenkyo and the Nishizawa Valley:
http://www.japan-guide.com/e/e6952.html
http://www.japan-guide.com/e/e6951.html

Or the Izu Peninsula:
http://www.japan-guide.com/e/e6310.html

Hakone and Gotemba are other options.