2 weeks ago my scooter yamaha jog RR 2008. could not start from the button.after 6-7 kicks starting .I think the problem is with the fuel.i changed the spark plug.but still the same.,i took off all the spolers around the engine to have a look at. but have no idea what is happening .very strange.after the startin(6-7 kicks) when switch off the engine and try to start it - everything is ok. start from the fist time,and this is the same during the next 2-3 hours .After that it happens again. So I think the problem is coming from the fuel.not enough fuel to start..please help.tank you