bought a brand new minimoto dirt bike and came restricted to 20mph :@, anyway it was fine but once i was riding it and it tried to go faster than it was restricted to then it brakes suddenly then gains its power back then carryies on doing that.
but now no matter what speed i do tbh it keeps jerking gaining speed then slowing right down loosing all power then cuts out unless i let go of the throttle dont know what to do with it guys help me!

matt h, March 2008

ur flooding ur engine then when its cutting out its not getting enough fuel through may i recommend getting a larger cab jet and some performance reeds

danny, May 2009

try cleaning the carb. sounds like u might have used 2 much oil in ur mix...

mushboy youtube (shell haven), August 2008