250ex cutting off

[gator]

Hi gang... My daughters 250ex, is cutting off, when she rides in big bumps. She said it would not shift or start for a short while. Then it started and when on, like normal.
She rides at slades in va., that is the only place it happens.
I checked the battery connections, looks right.
She also said one time, it slowed down like it was going to cut off but did not. Need some help, going to Hatfield McCoy soon, can not have that problem up there....
Also , air filter does not have any water in it either...

thanks..

[300exOH]

Check your spark plug wire. Mine is getting loose and it tends to cut out on choppy terrain. You may want to check all other electrical connections also.

[gator]

thanks, i did check that ,and looks to be pretty tight fit. I am going to get e new plug.