Blaupunkt FIETE 500 User Manual page 26

2.Unfold the stem
1.Hold the bike body and turn the stem
upright to ensure that the stem is seamlessly
connected to the underside
3.Slightly shake the stem and check if the
security buckle is fully buckled..
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2.Fasten the folding wrench directly in
the direction of the stem
Security button
4.When folding the stem, you need to
press the security buckle and then
open the folding wrench to it