84 zn750 fork Oil how much

Hi I changed my fork Seals on my 84 zn750..now next step need some assistance

but now I need to know how much for Oil to add to each Fork.

- what kind of oil?
- How much in ml? per fork
- how much Air to add.

This bike is a canadian bike must be like the zn700 of same year?

Thank you for any assistance.

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