24
5.
MAINTENANCE
5.1.
Maintenance, service and fault finding to be carried out by the user
The user and attendant have to take care of some maintenance, service and occasionally
fault finding activities. Other activities as described in this paragraph should be carried out
under supervision of your authorized dealer.
Tyres
Tyres should be checked every four weeks.
Turn the wheels (5 in total) and examine the tread and side walls of the tyres. If the tyre is
worn or damaged it should be replaced. Replacement of the tyres should be carried out by a
therefore trained person such as your dealer.
Check the tyre pressures ((5 in total) and adjust if necessary. The rear and front wheel tyres
are of the “air type”. It is important to keep the tyres inflated to the recommended pressure
any time in order to prevent excessive wear, sensibility for punctures or even damage. Please
check the tyre pressure at least every four weeks.
Tyre
Size
(ETRTO)
Recommended pressure Maximum pressure
castors
7 x 1 3/4
2.5 bar/36 PSI
3.0 bar/45 PSI
Front wheels
47-507
3.0 bar/45 PSI
5.0 bar/70 PSI
Rear wheel
47-559
3.0 bar/45 PSI
5.0 bar/70 PSI
Puncture repair
1.
Place the bicycle (well protected) on its side such that the wheel with the puncture
can turn freely.
2.
Check the tyre for small stones, pieces of glass or perhaps a nail. When you remove
the offending stone, glass or nail, the location of the puncture may immediately
become apparent. (check the inside of the tyre later for metal splinters etc., too)
3.
Remove the valve and the rim nut. Press the edge of the tyre to the middle of the
rim. Place the first tyre lever between the tyre and the edge of the rim (not in the
vicinity of the valve). Wedge the tyre lever behind a spoke
4.
Wedge the second tyre lever in place two spokes further up. Repeat with the third
tyre lever (again two spokes further). Remove the rest of the tyre with your hand.
5.
Press the valve holder inwards, remove the inner tube and pump it up. In the case of
a large puncture you will hear air escaping. A smaller puncture can be found by
immersing the inner tube in a bowl of water. Mark the puncture with a ballpoint and
dry the inner tube off.
6.
Clean the area around the puncture with sandpaper. Allow the air out of the inner
tube. Spread a thin layer of solution out over an area larger than the patch. Allow the
solution to dry over 1-2 minutes.
7.
Remove the plastic backing from the patch. Press the patch firmly over the puncture.
8.
Put the inner tube back into place such that the valve holder is immediately in front
of the hole in the rim through which it must pass. Screw the rim nut a number of
turns on the holder, put the valve back and screw tight. Blow the tyre slightly.
9.
Return the tyre to its original position with your hands. It is very easy to cause a
puncture with tyre levers. Work form the valve holder and ensure that the inner tube
does not become jammed between the rim and tyre.
10.
Push the valve part through the rim for a moment and pull it back out again. Pump
the tyre up, screw the valve nut up to the rim and put the dust cap back on.
