I recently acquired a Dahon folder with Mitsubishi 42cc (?) motor, Dimension Edge friction drive. Motor has about 15- 20 hours on it. Was riding along and experienced power loss with half tank of fuel still remaining. I was mostly powering and occasionally pedaling. The motor would not restart so I pedaled on home, filled the tank up full and the bike started and ran fine. Does anyone know what would have caused the power loss, it just kind of bogged down to a halt, when it happened. I thought these two stroke motors just keep on running as long as they have fuel. I use a 50:1 fuel ratio which is recommended. Any thoughts or suggestions would be appreciated.