Shimano E6100 User Manual page 20

2. Raise the front wheel and move the handlebar to the
right and left. If the headset is too tight, you will need
to apply force to move it to the right and left. The
handlebars should be able to move by itself.
Upper spacer
1. Undo the M3 grub screw in the upper spacer by turning them
anticlockwise with a 1.5 mm Allen key. Do not completely remove the
screw.
2. Undo the M4 bolt in the lower spacer by turning them anticlockwise
with a 3 mm Allen key. Do not completely remove the screw.
M4 screw
EN-20 Original User Guide | Pedelec Shimano Steps Version 1
Lower spacer
M3 screw
To turn the upper spacer,
you can insert a 3 mm Allen
key into the longitudinal
slot of the upper spacer
and use this as a lever.
It is best to proceed in
small steps. A quarter of a
rotation is often enough to
adjust the fit.
3. a) Tighten the headset (reduce the
bearing play): Turn the upper
spacer anticlockwise until it
sits securely. Hold the lower
spacer tight with your thumb and
forefinger.
3. b) Loosen the headset (increase
the bearing play): Turn the
upper spacer clockwise until you
achieve the desired bearing play.
Hold the lower spacer tight with
your thumb and forefinger.