Before the first ride
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6.2 Setting the handlebars 
Table 23: Handlebars clamping screw maximum tightening torque
Maximum tightening torque for the 
clamping screws of the handlebars*
*if there is no other data on the component
5  Nm - 7  Nm
 
Adjusting the stem
CAUTION
!
Crash caused by loose stem
Incorrectly fastened screws may come loose due to 
impact. The stem may no longer be firmly fixed in its 
position as a result. This will result in a crash and 
injuries.
 The handlebars must only be adjusted while the 
bicycle is stationary.
 Unfasten and adjust the designated screw 
connections, and clamp them with the maximum 
tightening torque for the clamping screws of the 
handlebars.
 Check the handlebars and the quick release system 
are firmly in position after the first two hours of 
riding.
EN_034-11592_1.0_0.01_19.08.2018_HERCULES BOSCH Purion MY19_Inhalt.book  Seite 78  Montag, 19. November 2018  11:00 11