I have 4 Kung Zhu toys that stopped moving. Still makes the annoying noise though. Is there a recall on this toy?

Wow, sorry to hear about your child. That is truly dreadful.

This advert shows it does make some strange noises. If it is a different type of noise, you can see at the back of the mouth there is a sort of a hinge and some gaps. Shine a light in there and see what you can see that moves? There is a dry silicone lubricant called Jigaloo that my ease its motion. Use it sparingly.

https://www.youtube.com/watch?v=XBXRSSWfq1Q

Jig-A-Loo - invisible silicone-based lubricant and water ...

https://www.jigaloo.ca Jig-A-Loo, an invisible silicone-based lubricant and water-repellent that doesnt stain or stink. It stops squeaks, lubricates, loosens and prevents rust and ...
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The very best of luck to you x

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http://www.zhuniverse.com/parents/product-instructions

Not step by step instructions, but this may help. The image on the box is not correct. It is a mirror image, so using the box as a guide is only going to confuse you. The one sheet instructions on the inside are correct. For a "correct" color example, I'll attempt to attach a mirror image of the box. It also helps to look on the picture/instructions for where the track actually breaks and use the sign holes/support holes to help you identify which piece of track to use and how to orient it. (As for attaching track - pay attention to the instructions - linking at the top first is very important.) I hope this helps.

you just play with it like a zhu zhu pet

wheels are stuck and the gear drive is jumping over the gears

I need a way to stop it from making a cricking noise when it moves

remove wheels & pull axle through to release the motor/gearbox combo