assalam o alaikum,
I have super power 78CC SP-70 bike. 2010 model. problem are:
1- Handle is vibrating on speed 40 and above. right hand grip feels more vibration. due to vibration my hand is not active and difficult to control accelerator ( as riding in winter your hand freezes)
2- how to adjust carburator for maximum mileage. when slowing down accelerator from 4th gear silencer shouts like misfire. ( silencer is not original super power. it is a modified one)
3- spark plug is little brown in center while blackish on outer circle.
4- battery ( when charge from dc-adaptor outside ) is charging , when in bike not charging. I have removed battery from bike, checked voltage on wires coming from charger it shows 12v dc approx and also bulb is lighting when connected to them
please suggest the solutions