50
WHEELS AND TIRES
the tube is inserted into the tire. It is filled
through a valve. Riese & Müller E-bikes use
presta valves exclusively. Before inflation,
the small knurled nut is unscrewed and
then pressed back down into the valve. It is
normal for a little air to escape during this
process.
If the presta valve is not suciently tight
-
ened, this leads to the gradual loss of air.
Check the tightness of the of the valve body
in the elongated shaft. Make sure the valve
diameter matches the hole in the rim and
that the valve stands up straight.
CHECKING THE TIRES
Regularly check the tires.
DANGER!
If the tread is worn or the edges
are brittle, you should replace
them. The inside of the tire may
be damaged if is contaminated
by moisture or dirt. Defective rim
tape must be replaced immediate-
ly. Damage to the tires can lead
to their sudden bursting which
could be dangerous.
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