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Gt250 f1

There is a socket on the bike somewhere you need a piece of wire to short the terminals now I believe it needs to be running as the hyo ecus don’t store codes, the code will display on the clock then Google it or post on here & I do have a vast array of stuff laying about & I might be able to tell you what it is, I reckon it would most likely be a o2 sensor but one thing worthing checking on the battery is there a smaller wire connected to the earth? Check this as I know if it breaks it will cause the f1 light to be on at least on the 250 it will & tbh there’s not a lot of difference between them.