Hi all, great site wondering if you can help me out. I bought a used atv for my daughter. It is a Pathfinder 50 hr, made by yonghe motorcycles, it has a zongshen engine 48 cc 4 stroke, which I know nothing about. The guy I got it from had no idea either. He said it was a two speed trans, semi auto.. The engine # is ZSABL0209, I think. Where do you think I can find info on valve set specs, plug gap etc. I would like to go over the engine and tune it up a bit for her but I cannot find any info whatsoever. The manu tag is very worn but I think it was made in 2000. Thanks guys and take care.