Secure firmly the fork external tube in vertical position. I used two pieces of wood, a piece of rubber as pad between pieces of wood and fork and a couple clamps to hold the external tube of the fork. The fork external tube must not to be able to rotate
Turn rebound adjuster (small silver cylinder in the middle on the top side of the fork with slot for flat screwdriver) clockwise until lightly bottom, count number of turns and remember this number. In my case it was 1.5 turns
Turn preload adjuster (red nut on top of the fork) counterclockwise until lightly bottom, count number of turns and remember this number. In my case it was 6 turns.
Unscrew the cap from the fork (big black hexagonal interface on top of the fork)
Put the fork in fork compression tool and compress the fork
Bend piece if rigid wire like it showed on the picture below
Pull the fork cap up (it will be hard to pull due to oil resistance) and slide the bended wire under the jamnut like it showed on the picture below to hold the cap
Loose jamnut and cup using two wrenches
Unscrew the cap manually
Remove the bended wire and let the damper tube go down
Remove the white plastic cap