Ducati MONSTER620 Manuel D'utilisation Et Entretien page 107

Shock absorber adjusters
The rear shock absorber has outer adjusters that enable
you to adjust your motorcycle to the load.
The adjuster (1) located on the right side, on the
connection holding the shock absorber to the swingarm,
controls rebound damping.
Turn the adjuster (1) clockwise to increase damping (H),
anticlockwise to reduce it (S).
STANDARD setting:
turn the adjuster (1) all the way in (clockwise) then
E
slacken it 8 clicks.
Two ring nuts (2), located on the top section of the shock
absorber are used to adjust the outer spring preload.
To change spring preload, slacken the upper ring nut.
Then tighten or slacken the lower ring nut to increase or
decrease spring preload as required.
Warning
Use a specific pin wrench only to turn the preload
adjusting nut. Be careful when turning the nut with the
wrench, as the pin may slip out of the ring nut recess and
you may hurt your hand hitting motorcycle parts.
30
2
2
1
fig. 24