If the clevis ends are not threaded, then as Jac MAc says, a nut is missing from the RHS. Also, they need moving towards each other on the threaded bar - as there is too much slop at the moment, allowing them to move to the positions shown, 1 up, 1 down. Doing this will remove a lot of slop, firm up the pedal and increase braking pressure available.
Finally, If the pivot point (ball shaped lump in tube of pedal) is too far off-centre to get then required bias, then the master cyl sizes need changing. The adjustment should only need to be wound a few turns in either direction, no wound fully to one end or the other.
For SVA in UK they need to be non-adjustable (or not readily) so bar normally needs locknuts and pinning.