HI, just received my new MZ 66 2009 RC3 1.5" fork. I can't seem to find anywhere that explains what to do with theter and air pressures etc. I've got mechanical pre-load, rebound with air valve under it and compression. Obv I've had lots of differnt forks in the past but none with a mechanical pre-load, do I use this for sag or the air valve?

bump – I'm now thinking that the 'mechanical pre-load' is the low speed compression and the red know underneath is the high speed and sag is adjusted by the air valve – anyone?

Have a look here. There are close up pics that says what all 3 knobs are for. Sgtill not sure on the air but in the tech docs it says put no more than 15psi in it so I guess its preload.

http://www.marzocchi.com/Template/detailSPAForksMTB.asp?IDFolder=113&LN=UK&Sito=mtb&IDAnno=56330&mCO=Prgho\hduPrgho\hdu%23GHVF/%23VhulhRuglqh/%23weoRjjhwwl1LGRjjhwwr&mCW=DQG%23%26Prgho\hduPrgho\hdu%26%23A@%23*5334*%23DQG%23%26DP%26%23@%234%23DQG%23%26Prgho\hdu%26%23@%2389663&mCJ=&IDOggetto=56401