Help! Need parts ZS 169FMM
 

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!

Post up some pics of the engine, when they were producing those, there were some that were mismarked. Especially get some of the cylinder head.