Which engune oil u r using? I suggest you to visit a good honda antena shop. 70cc bike ki timing chain or got replace hoti hy after 10000km. Or pridor ka engine b 70cc bike jaisa hy maine b apni last post mai timing change ka pocha hy. Or mera bike b aise sound dy rha hy after completing 10000km.
One thing is sure after changing timing chain and got set engine becomes smooth and less sound produced.
Sent from my LG-D801 using Tapatalk