*Get some decent footpegs for them. *The OEM bars restrict the options for levers so going to the hassle of converting to aftermarket bars can be worth it as it allows you to fit reach adjustable levers. Keep an eye on head stem bearings and races and consider upgrading as the OEM races are prone to cracking. *You will need a dual gauge to confirm the oil pump is set correctly. *The suspension is garbage so be prepared to spend time maximising its ability once the child starts to find its limitations, which will not take long. The 2017+ pw50 has upgraded forks and are a wise upgrade to any older pw50.
I had the same issue, I just open my pw50 and the kick shaft was broke inside , just remove the engine cover where you put the oil and you going to be able to see the broken shaft , I hope this helps you.
We used a mix of aftermarket and original Yamaha parts. The first link in the description will take you to a page with all the parts and tools that we used in this video.