Gotrax R2 Manuel D'utilisation page 14

Lift up the stem and lock with the folding clamp.
STEP 2
When you want to open the folding clamp you need to push the safety buckle
upwards and pull the folding clamp outwards at the same time to open it .
12
STEP 1
Note:
tightly. (When you press the folding clamp and hear a
"click", it is locked in place.)
Make sure that the folding clamp is fastened