Ricco1....do both sides flash at the same speed? If one side flashes faster than the other I would check the above suggestions around poor connections, corroded bulb holders, etc. If both sides flash at the same rate I would probably go with Polecats suggestion that the flasher relay may be a bit sus. Does the flash rate stay the same irrespective of engine speed or does the flashing get faster as the revs go up? Regulator? Check the bulbs to make sure you have the correct wattage for your bike. Does it have the original indicators or have they been replaced with LED ones? If so you may need a special relay for the LED indicators. Just a few ideas for you to consider. Cheers, Bob