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→ After changing the front seat height, always check the caster wheel journal angle and adjust it if necessary (see
Page 14).
28
6.4 Adjusting the wheel locks
WARNING
Failure to verify brake functionality
Accident, user falls due to incorrect adjustment and improperly inflated tyres
► Check the correct spacing between the wheel lock bolt and tyre (see the following section for details).
► Check the correct position of the wheel lock bolt relative to the tyre. During braking, the wheel lock bolt has to
cover at least half the tyre width.
► Always carry out adjustments to the wheel lock on both sides.
► Ensure that the user can operate the wheel lock without great effort. The force required to do so must not
exceed 60 N.
► Check the tyre pressure of the drive wheels. Note the information in the section "Technical data" or on the tyre
sidewall.
► Only use original drive wheels with a verified maximum radial out-of-round of 1 mm.
This adjustment must be made after the drive wheel has been repositioned or during fine adjustment.
6.4.1 Adjusting the knee lever wheel locks
1) Loosen the Allen head screws between the knee lever wheel lock and the threaded stud in the frame tube (see
fig. 30, item 1).
2) Adjust the knee lever wheel lock by sliding it (see fig. 30, item 2). When the wheel lock is disengaged, the gap
between the tyre and wheel lock bolt must not exceed 5 mm. (see fig. 31).
→ The distance between the wheel lock bolt and the drive wheel must be 1–5 mm in the unbraked condition.
→ It must be possible to operate the wheel lock evenly and easily on both sides.
→ The wheel lock bolt must lock the drive wheel securely when stationary.
3) Evenly tighten the Allen head screws in the threaded stud to 8 Nm.
→ After adjustment, the left and right knee lever wheel locks must both have the same braking force.
30
Avantgarde 4
29
31
Settings
max. 5 mm
17
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