How to replace the broken wheel? -- Model K
1. Turn the hoof up to reveal the wheel.
2. Hold the axle and unscrew the lock screw counterclockwise with a M5 Allen Wrench.
3. Remove the axle and lock screw and install a new wheels. Insert the axle into the corresponding position. The protrusion on the axle corresponds to the groove on the wheel fork.
4. Hold the axle, tighten the lock screw clockwise with the M5 Allen Wrench.
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