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17.
Carefully
slot
the
wheel
axle
into
the
forks,
making
sure
the
disc
rotor
slides
BETWEEN
the
disc
pads
in
the
disc
brake
unit.
With
downward
pressure
on
the
wheel
to
make
sure
it
is
firmly
into
the
forks,
lightly
tighten
the
axle
nuts.
Then
tighten
each
nut
with
the
spanner
supplied
until
very
firm.
18.
Spin
the
wheel.
If
your
disc
brakes
are
rubbing
badly,
they
need
fine
‐
tuning.
If
you
are
not
familiar
with
disc
brake
maintenance,
then
for
safety
purposes,
ignore
the
brake
tuning
procedure
below,
and
simply
take
your
completed
Wisper
bike
to
your
nearest
cycle
shop
to
get
the
brakes
fine
‐
tuned.
It
will
only
take
them
a
few
minutes
and
you
can
be
sure
your
brakes
will
be
correctly
tuned.
19.
Fine
‐
tuning
the
disc
brake:
The
aim
is
to
get
the
pads
set
parallel
to
the
disc
rotor
and
as
close
as
possible
without
rubbing.
This
is
achieved
by
a
combination
of
altering
the
angle
and
alignment
of
the
unit
on
the
fork,
altering
cable
tension,
and
altering
the
setting
of
the
inside
pad.
Hint:
During
fine
‐
tuning,
repeatedly
view
the
disc
rotor
and
pads
from
close
to
the
wheel,
so
you
can
see
the
alignment
and
spacing
well.
20.
Adjust
the
alignment
of
the
brake
unit
on
the
fork
by
loosening
the
two
adjustment
nuts
,
then
shifting
the
position
of
the
brake
unit
to
get
it
parallel
with
the
disc
rotor,
and
with
the
outside
pad
as
close
to
the
rotor
as
possible.
Hint:
If
the
outside
pad
still
rubs,
then
the
brake
cable
is
too
tight.
Loosen
the
cable
fastening
nut
to
release
the
cable
and
allow
the
pads
to
open.
Re
‐
tension
the
cable
and
tighten
the
nut
firmly
once
you
are
happy
with
the
gap
to
the
outside
pad.
21.
Now
get
the
inside
pad
close
to
the
disc
rotor
by
adjusting
the
inner
pad
spacer
nut.
Hint:
A
little
rubbing
is
okay,
as
the
pads
need
to
wear
in.
22.
If
pulling
the
brake
lever
fully
does
not
apply
enough
pressure
to
the
brakes,
either
the
cable
is
too
loose,
or
the
gap
between
the
pads
too
great.
Readjust
using
the
appropriate
procedures
described
above.