Help! Need parts ZS 169FMM

[fierodough]

I have a 4 stroke Zongshen 250CC dirt bike. I want to replace the timing chain, chain guides and tensioner. The engine stamping is ZS169FMM and what I assume is the serial number: *87B00015*

Can anyone guide me to where I can find the part numbers or parts diagram so that I can order new parts.

Thanks in advance!