We need pictures of your bike, both sides, around the front hub. There are several different mounting options for the SA X-FD - as mentioned in the PDF you linked to.
The over view is:
1. disconnect the cable from the arm extending out of the arm - the PDF suggests that this is simply a matter of moving the arm in the direction of apply the brake and removing the cable.
2. disconnect the other (reaction) arm from the fork.
3. unbolt the wheel normally.
But the devil is in the details - no pictures, no details.........
Nigel
Sorry about the delay.
Please see photos below.
[attachment=5369]
Referring to the picture above. At position 1; pull the black lever upwards to disengage the cable from the brake actuating lever. Then at 2; pull the adjuster upwards and out of the long black bracket. Finally, loosen the wheel wing nuts enough for the wheel to drop out - might have to be completely removed.
Please note that wing nuts like that are considered dangerous because they can be loosened by something hitting them.
Nigel
Great, I was able to take the wheel off.
Thanks for your help.
Where did you purchase those glorious wing nuts, please ?
Are they still available ? I'm green with envy ! Must have some. Thank you.