Hi all

I am rebuilding a sl125 honda motor and have purchased a Chinese cylinder & piston..

Anyway i am about to put it together and notice that there's no spot for the oil seal between the barrel & cylinder head.
' this is where the oil runs up the cylinder head stud' also in the package that came with the barrel there's what seems to be one valve stem seal....

I'm confused

any one got any info on this? or experience putting one of the these barrel & piston on a sl125 motor?
help greatly appreciated

phil....