Having checked the manual, and looked at the bike, it appears to just be a case of unscrewing the fork tops as per all the other bikes I've done springs on. I've seen the need for a long 'special tool' when changing the fork seals as the fork needs to be split.
Josephau, you shouldn't need to change the seals, but yes generally the fork oil is changed as well, sometimes for a thicker or thinner viscosity.
You are right as well about removing the forks from the bike, though it can be done in situ if you can get the weight off the front.
There is normally a drain plug on the bottom of the fork leg to drain the old oil out.