I have a motorbike and while I was driving it all of a sudden the back wheel locked up I tried tightening the cable and nut what else could it be help please
After checking the brakes and chain I would check to make sure the clutch is operating. Make sure the clutch lever is moving far enough to disengage the motor. If the wheel and chain are not locked up and clutch is disengaging then it's time to look at something inside the motor. Sometimes people leave their fuel petcock on when parked and fuel seeps down into the cylinder, since liquid can not compress this sometimes causes a motor to seize. Easiest thing to do is pull the spark plug and roll the bike, if there is liquid fuel in there it will spit right out (make sure there is no spark or flame nearby). If your chain is not jammed, brakes not jammed, and spark plug pulled and you STILL cant get the motor to turn then you have bigger problems, lets hope you don't have to go there....I just checked the chain and its on the sprocket whatelse can it be?