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Ah you see your not supposed to just copy your question across from one thread to another, it just gets confusing if you do that, Cynic is right that it's a copied thread, I suggest you find a way to ask a similar question not just copy and paste, a few photos as well would help as it's easier to give advice if you can see what's being talked about.

Lose weight? Take of everything you don't need then just wear your underpants. Or spend shit loads of money buying stuff that will make it go 100MPH for about 5 minutes then need a rebuild. Or better yet PASS YOUR TEST and buy a bigger bike. We have all been where you are now and none of us have yet to make a 125 bike do 150 MPH that's cos they are designed to do what the manufacturer intended not what you want.

Don't go there yet, you don't know what's wrong. If your unable to do it yourself then you have no choice but to pop it into your local shop like NSD say's, find the problem then think about what your going to do, don't make the problem worse till you know what's wrong. Most of these type of things are fairly simple to fix just need a bit of knowledge to find.

Go to front page, click on FORUMS, go down to workshop, click button then type new thread, not thick, you don't know till you ask.

Oh I am sorry mate, people says they are just animals, their wrong they are family.

No chance of that mate I like being retired to much, feeling better now, got my head round the "mistake"

Ok, First thing to check is how tight is the wheel nut? If that's loose then adjust it to the tolerance then tighten it to the right torque. Next check to see if the tyre is on straight, sounds silly but if you run your tyres under the correct pressure they can spin on the rim putting the wheel out of balance, if you look at the side of the tyre you will see a raised edge that runs round the tyre it should be even all the way round, next do you have any lumps or bumps on the side of the tyre? this can happen if you mount the curb at speed and it damages the tyre walls. Finally if none of that helps then get it on the centre stand (if you have one) if not then get a mate to hold the bike up on the side stand and spin the wheel to see if it's straight, if it wobbles all about then your rim is damaged and you will need to get it re-tensioned if it's salvagable. Wheel bearings are another reason for it wobbling have you changed them or do you know when they were last done? Do you have the manual for your bike? if not then go straight out and buy one, it will tell you all you need to know about most problems and give you some ideas on how to fix them.

This is the day you remember all the arseholes you met during the last year, I'm up to 47 , should explain, took someones advice over a bit of work I was doing, now have to redo what took me a week.

It might be an idea to say "Hello" in the new members section BEFORE you ask to borrow someones CDI unit, especially as they cost £100+, we get loads of people who are one hit wonders on here who want help/advice then never come back, makes folks a bit wary of people who just tune in to borrow something. Not saying that's you but your new here and would you lend some guy you don't know the CDI out of your bike and risk him turning it to toast? Even if you put your unit on his/her bike it still might fuck their bike, just sayin. Try watching this, might give you some ideas. https://youtu.be/lYzrByJUoGY or send it off to be tested by someone who has the tools.

Hi Spooks, welcome to the YOC.

If it sounds like this https://youtu.be/DoBX5-QUdUU then theres probably nothing wrong with it otherwise Kev might have the right idea.

Try something like this. https://youtu.be/iVH83g9DUK8 It's a bit long winded but tells you alll you ned to know on how to test a coil, you could of course stick your tongue on the end of the wire and push the starter button ! Don't know what that would do but would be fun to watch SOMEONE ELSE doing it.

In the owner manual, the one supplied at purchase, there is a page that has all the error codes listed and the usual means of diagnosing the fault and the remedy. If you don't have the book then you should go to your local Yam dealer and get it on their diagnostic machine, that will tell you what the problem is and they can fix it right there. You can't do any more till you either have the owners manual or take it in, All the info you have supplied tells you exactly what's wrong, if you don't want to believe it then there's noting anyone can say. No one on here can tell you how to fix it that's something you have to do yourself. Take the master key and get it cut then take your ECU and coils off the bike, send them or take them to be tested, there is a way to test your coils at home but truth to tell if your ECU is gone then no matter how often you check them it ain't going to run till the fault on the ECU is sorted.

Don't you know Jimmy? RONNIE FUCKING PICKERING FFS !!!

Gotta say if it can lift off with 3 24volt batteries it can lift of with an engine and a few gallons of petrol !!! Now that would be worth riding. https://youtu.be/H0epgrI4CDs

I'm interested Kev, makes me smile every time. You just gotta be in awe of his technical skills and faith in "what's the worst that could happen?"

Try here, this kid seems to be doing the same as you and he has a list of parts as well (I think) http://planetminis.com/forums/2-stroke-pitbikes/184823-yamaha-mr50.html Some info here http://japan.webike.net/YAMAHA/MR50/723/mtop/ You might find something here as well, good supplier and helpful staff. http://www.wemoto.com/bikes/yamaha/

Hi Gibby, Welcome to the YOC, well done on passing your test to. XJ600 is a nice solid bike lot's of torque low down and just keeps getting better the wider you open the throttle.

Well done Grouch, your getting there mate.

Ah that's good news mate, really pleased I could help.

I believer you Jimmy but as it's so far from anywhere the tea costs £15 a mug !!

Simple answer YES, not a problem if you shop around.

As above really, do the easy stuff then work your way towards the expensive stuff.

No Prob David, just hope you find a fix. Welcome to the YOC.

Had a similar thing with my FJ, had a Datatool device on it, I just followed each wire from the unit to where it joined the loom and cut the buggers off and tidied it up with tape, it really isn't rocket science, as long as you get all the wires removed your back to a bike with no alarm or immobiliser. You can if you want use heat shrink if you leave enough of a tail then it really is water proof. Don't trace the wires from the loom to the unit, trace from the unit to the loom. It's fiddly and time consuming but easy to do.