bradley220976New Member Hi all. I own a Yamaha jog RR and I have a problem with it. When the bike first starts (on the dot) it will drive amazingly but as soon as it warms up the bike is awful. The throttle will rev the bike and after the rev it will lose all power and cut out. Can anyone please help ?
Fuel mix sounds wrong. Run the engine until warm then tune the carb to its peak. Have you got a manual or auto choke? If the choke is faulty then when the engine warms up and requires less fuel it starts to run rich because the choke isn't closing so bogs out.