1
Remove wheel from the bike.
2
Remove valve core and
undo rim-lock, then break
the bead on both sides of
the tyre by pushing down
firmly with your heel all
around the rim.
3
Lay the wheel sprocket
side down (not disc side).
Starting at the valve insert
two tyre levers and then
pull the levers over one at a
time to lift the bead off the
rim. Work around the rim
until that whole side is off.
4
Push the valve stem through
the rim and remove the tube.
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