My clutch pedal goes to the floor, but does not disengage the clutch? Can I make an adjustment to fix this?

no.

 

It's hydraulic.

 

Sounds like a failed Master or slave cylinder.

 

I recommend replacing both when this happens.

Check the fluid level. If it's low there's a leak which can be either the slave cyl, the master cyl, or the hose between them.

Could also be a broken release fork.

Have someone else press the clutch pedal while you watch the release fork move. It should move about an inch when the pedal is pushed to the floor. If the end of the lever moves fine, the fork is broken.

Seen many broken forks and blown own pivot points on forks. It happens.

 

GD