Ducati Multistrada 1000DS 2004 Owner's Manual page 56

Left side fairing
Working on the left side, from inside the fairing, turn
counter clockwise by ¼ of a turn the quick-release fitting
(1) to release the left side fairing front end (fig. 43).
Slide out tab (2) at the frame support to release the left
side fairing rear end: it will be easier if you push from the
outside on the fairing at the tab (fig. 44).
Slide the left side fairing out of the fuel tank retaining pins
and remove it.
E
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1
PUSH
fig. 43
2
fig. 44