Marzocci MX100 Fork Help

fredstaple

fredstaple

Speeding Up
Nov 1, 2009
198
1
38
Puerto de la Santa Maria
#1
I got an old mountain bike a few months ago and am now trying to make it a low budget rebuild, the frame and fork are old, I figure somewhere in the early 90s era (1 1/8 inch quill stem and cantilever brakes lead me to this conclusion). The groupo is Shimano Deore. The fork is a Marzocchi MX100. I have looked for a manual online, but think it is just too old.

I was wondering what I should do to the fork to get it back to ridable condition. Most of my research on the internet shows people draining the fork oil from a hole in the bottom of the fork.

The Marzocchi does not even have an opening near the drop outs. It does have some air valves at the fork crown. I have a couple questions if anyone has experience with this era fork. My mountain bike knowledge is limited to rigid forks.

I was wondering if anyone knew if forks of this era had fork oil?

Any idea about how much air pressure to put in the fork. I assume the higher the perssure, the more rigid the fork will be. I just don't know what a good starting point will be.

I have compressed the fork and it goes down and comes back up as it should.

Thanks for the help on this!
 
kiwisimon

kiwisimon

Maximum Pace
Dec 14, 2006
2,708
531
133
Japan
#2
Fred in brief:
Air oil fork similar to the Rock Shox Mag 21
Has schrader air valve in both legs.

Look up mag 21