hi i have a 100cc speedfight have changed spark plug and charged battery,but when i try to use electric start all i get a little wurring noise near battery but no joy in starting has anyone got any ideas.

bryan1, March 2011

sounds like starter relay hade a few speedfights and these are a pain in the arse . take of your battery box cover and you should see a yellow square thats the starter relay ever get a new one or take the yellow cover of and see if the little bar on the relay is moving when you turn it over if not just push it together with a screwdriver or somthing obviously with ignition on

miggie, March 2011