Product: ROKR Magic Cello Mechanical Music Box
SKU: AMK63
Product type: Mechanical music box 3D wooden puzzle
Quick answer: This guide identifies small AMK63 parts and covers gear alignment, transparent-gear orientation, bushing pressure, base and movement fit, and rotation that sticks after winding. For the complete manual and assembly videos, visit Assembly Guides and Manuals. For missing, broken, uncut, or visibly warped parts, use Part Replacement.
In This Guide
Before You Troubleshoot
- Test the gear train at the checkpoints in the manual before adding the next outer section.
- Rotate the rear gear counterclockwise by hand to find resistance before winding the music movement.
- Apply wax only to the gear gaps and contact points shown in the instructions.
- Adjust bushings a little at a time. The gears need enough clearance to rotate while remaining correctly positioned.
Parts Reference
Where Does the P17 Gasket Go?
P17 is used to control the space between the bushing and the gear. Refer to the Older Version and New Version images below for its position. If P17 is missing, you can use A4 paper as a temporary spacer.
Where Can I Find Parts P11 and P5?
Use the first image to locate the P11 transparent bushing and the second image to locate Part P5 before assembly.
Rotation and Movement Problems
Why Won’t the Magic Cello Rotate After Assembly?
1. Make sure the patterns on the gears are aligned: triangle to triangle and circle to circle.
2. Check whether the transparent gear is assembled incorrectly or reversed.
3. Manually rotate the rear gear counterclockwise to test whether it moves smoothly without resistance or tight rotation.
Solution: Apply wax to the gear gaps while rotating, and loosen the pressed bushing slightly.
4. Make sure the bushing shown is close to the adjacent part, and check whether Part A28 is assembled.
5. Check whether all bushings are too tight.
Solution: Try loosening the bushings first. If they are too tight, use pliers, scissors, or nail clippers to pry them open.
6. Check whether the connection with the base is pressed down fully. If it is not fully seated, the gears at the connection may not fully engage.
Solution: Align the holes and slowly press both sides of the connection firmly to the bottom.
7. Check whether Part F14 is pressed down fully. If it is not fully seated, the gears at the connection may engage at an angle.
Solution: Unscrew the three screws, press F14 down fully, place Tool C9 in the position shown in Picture 1, then hold F14 down and reinstall the screws as shown in Picture 3.
8. Check whether the movement was fully tilted into position during Step 15. Incorrect positioning may cause the gears at the connection to engage at an angle.
Solution: Reassemble the movement, making sure the two holes on the back are fully inserted with no gaps.
9. Insert Parts F2 and F10 fully, leaving no gaps.
10. E21 is a wooden part; do not mistake it for a bushing. Part E21 is on Board E, which includes a spare.
Why Does the Music Movement Stop After Winding?
1. Make sure the movement is tightened enough. Wind it four to five turns.
2. Check whether the last tooth of the semicircular gear gets stuck during rotation.
3. If the bushings on both sides of the gear are too tight, loosen them slightly.
4. If the gear still gets stuck after the bushings are loosened, slightly sand the teeth of the two fan-shaped gears.
Need More Help?
If your issue is not covered here or the problem continues after these checks, email service@robotime.com or contact Robotime Support.
Robotime is a creative lifestyle company dedicated to designing and developing 3D puzzles, toys, and wooden handicrafts. Subscribe to learn more.
