Honda CRF1100A 2021 Owner's Manual page 308

Other Adjustments
NOTICE
Do not turn the adjuster beyond its limits.
Adjust both left and right forks to the same spring
preload.
302
Adjusting the Front Suspension
u
Adjuster
#
Rebound Damping
CRF1100A/AL/AL2/D/DL/D2/DL2
You can adjust the rebound damping by the
adjuster to suit the load or the road surface.
Turn the adjuster using the Standard/Phillips
screwdriver provided on the underside of the
rear seat. P. 253
2
The rebound damping adjuster has 3 turns or
more.
Turn clockwise to increase rebound damping
(hard), or turn counterclockwise to decrease
rebound damping (soft).
CRF1100A/D
The standard position is 2 3/4 turns from the
maximum setting so that the punch mark on
the adjuster aligns with the reference punch
mark.