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Maintenance
8.4.3.2 Presta valve
Figure 68: Presta valve with valve insert (1), knurled nut (2) and rim nut (3)
It is recommendable to use a bicycle pump with a
pressure gauge. The operating instructions for the
bicycle pump must be adhered to.
Unscrew and remove the valve cap.
Open the knurled nut around four turns.
Carefully apply the bicycle pump so that the valve
insert is not bent.
Pump up the tyre slowly and pay attention to the
tyre pressure in the process.
The tyre pressure has been adjusted as per the
data [ Data sheet, page 1].
Remove the bicycle pump.
Tighten the knurled nut with your finger tips.
Screw the valve cap tight.
Screw the rim nut gently against the rim with the
tips of your fingers.
EN_034-11592_1.0_0.01_19.08.2018_HERCULES BOSCH Purion MY19_Inhalt.book Seite 147 Montag, 19. November 2018 11:00 11
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