Assembly Instructions for Changing the Blade on the 10-525 FatMax Carpet Knife

Instructions for 10-525

1. Unscrew the black knob (to the left)
2. Remove the washer and the bolt
3. Carefully open the case by removing the top cover (removing the side where the black knob goes, opposite side of where the spare blades are attached)
4. Inside you will find 2 blades held down by a rubber washer
5. Carefully remove the washer
6. Carefully take out one of the blades
7. Cover the remaining blades with the washer
8. Inside of the knife there is a black slide. Please center it in the middle.
9. The slide will have a tongue in the front and a hole in the back with a little bump (button) in the center.
10. Make sure that the tongue is facing the front of the knife
11. The  opening hole needs to be facing the back of the inside of the knife
12. The little bump (button) that is in the middle of the tongue must be facing upward
13. Now place the middle (opening inside of the blade) over the bump (button) of the tongue.  Do not place the hole in the blade over the screw.
14. Put the silver cover back together
15. Slide the bolt in from the bottom through the hole of the tongue (inside of the knife) so it will be sticking upward
16. Place the washer over the bolt (curving upward)
17. Lastly screw the black knob back on.