Yoto Lion Owner's Manual page 10

Step 3: Roll the wheel in between the front fork, as shown in the image below.
Align the fork dropouts with the axle of the wheel hub. Ensure the black spacer is close to the wheel hub and the washer is in contact with the nut.
Verify also that the dropouts are fully seated on the axle and the brake rotor is properly inserted into the caliper.
Use the Wrench(15mm) to thread the thumb nut onto, tight the the skewer a couple turns. As below picture.
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