how do you fix mountain bike gears, a bike that i have bought, the gears slip and it doesnt go onto the low gear. just a lot of noise and keeps slipping. cheers
if it has 3 cogs at the front, get the chain on the middle cog and then work the rear gears and adjust the cable 1 way or the other, it sounds as though your cable has streached which is a comon fault, so unscrew the cable adjusters until you get low gear,then try all the others you may have to adjust it back slightly