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Before the first ride
Figure 47: Screw caps in different designs
 Only adjust the tyre pressure when the bicycle is 
stationary.
 The air valve is located under a screw cap on the 
head of the left shock absorber. Unscrew and 
remove the screw cap.
 Adjust the air pressure as an initial value using a 
high-pressure damper pump and based on the tyre 
pressure table on the fork and the rider's weight.
6.5 Retracting brake linings
New brake linings take time to break in and adjust to 
their final braking force.
 Accelerate bicycle to about 25 km/h.
 Brake bicycle until it comes to a halt
 Repeat process 30–50 times.
 The brake linings and brake discs are now broken 
in and provide optimal braking power.
EN_034-11592_1.0_0.01_19.08.2018_HERCULES BOSCH Purion MY19_Inhalt.book  Seite 87  Montag, 19. November 2018  11:00 11