Hello i hava a yamaha tzr 50 04 plate and the speedo is switching on and the numbers are coming up but when i move the speedo stays at 0 and the milage stays the same can you help me please . btw it isnt wt ive pt it down as on the products catogory par because i couldnt find my bike on the list

I had the same problem. On the left side of your wheel (from looking at it from the front) there is a small speed dector and this is most likely where the problem is. 1.try taking the cable in and out of the speed dectector. 2.if this still doesnt work then take the whole wheel off and look at the inside of the speed detector it maybe full of "black gunk" you will want to clean this out and then just dabble a little bit of 10 w 30se oil into it, just to help lube it up a bit (other oil based lube could be used) 3.if neither of these get it working you will probally need a new one