New Zongshen RX3 (ZS250GY-3) Dual Sport

[jimjr21]

Originally Posted by rjmorel

What does the "piston spray hole" do that is mentioned on the first page in the add in post #3 ? thanks, rj

This is a part of the oiling system that pumps oil to the underside of the piston. It does two things
1) adds lubrication to upper end bearing and cylinder walls through bleed holes in the oil scraper ring land
2) cools piston with oil