david a

hi i have recently had my yamaha brake down on me i was riding along and then all of a sudden the power completely went i found this was the main fuse from the positive on the battery i changed this and got power back but now i have no spark i have checked the spark plug and the coil both are fine i was woundering if anyone has any idea what else to check or if anyone knows any common faults also if there is a way to check the cdi unit as it is a sealed unit thanks.

hi there my servise light came on a little while ago i couldnt be bothered to servise it so i decided to turn the servise light of myself i just had a guess on how to do it and it worked so if u want to give it a try on urs what i did was i turned the ignition off i held the blue mode button then turned the ignition on i kept hold of it until it flashed and then it was reset