Airhead

Whats wrong with the carb? "spindle has broke" doesnt really explain much...pictures?

I dunno but its always worth a try read this Here If it isnt you wont get it started, I expect it is well that will tell you there is some compression, you could hardly tell the difference by putting oil in by that method though Best way is a compression tester, a bit difficult with these bikes though (not much room)

Vez I expect it will be like mine And I would think the pulley will fit both versions

Look what postie brought

as far as I know the cylinder barrels are the same so either sort should fit. However I cannot state this as fact. Maybe Vez knows?

1: Have you tried bump starteing it yet? 2: You have a good spark so all you need is compression and fuel 3: You changed the fuel so thats good but is the plug getting wet with unsuccessful attempts to start? 3: You say you checked compression, soo what did you find or is it a secret

Cheers BWJ Two Stroke Gathering 4th Sept 2010 Gathering starts from 12pm and a ride out from 2pmBack for the second time after last years great success. Full camping facilities Great food and excellent beer. There will be a ride out setting off at 2pm prompt from the entrance. Anyone attending the ride out please fill up first. Then back to the cafe. Anyone camping can then indulge in a few pints

I saw a flyer about that but didnt note the date...it was squires though

Does it fire at all? any banging, spluttering, half hearted running....anything?

Bloody hell , pictures up before I even got back!! Had a fantastic time at ACRD rally (at MFN) this weekend, made very welcome on my first attendance...great bunch of lads. Some beautiful examples of aircooled RD's and it was great to be amongs them on the old DT, which of course drew a fair bit of attention in its own right. Weather was sunny and hot (a bit sunburned) Sorry you were messed about with work merv it would have been a great chance for you to buy me a pint

no idea Chris, maybe you could get some tomorrow and leave it soaking tomorrow night What...too impatient, well then spray it with easing oil, leave that soaking and keep topping it up. then tomorrow heat it up, take care not to overtighten the vise as i said Tip... When you get a good tight grip with the mole grips I always rock the screw back and forth, on many occasions you will feel it move even if only slightly and then bind again...DO NOT...continue in the same direction when it binds but move the opposite way until it binds the other way etc etc etc etc you will notice that the distance it moves gradually increases, give it a spray now and again good luck and i'm away as from tomorrow so I wont be able to see how you get on until Sunday Cheers...Paul

ok leave it soaking in diesel oil (just the end) overnight. Then heat it around the exhaust adapter flange where the bolt is, If you havent even got a bench with a vise I suggest you take it to a garage or kwik fit centre etc, or engineers local to you and let them do it for you. If you have got a vise then dont overtighten it or you will be in sh1t st if you break it, Mr Yamaha will want lots of you pocket money to replace it.

Chris its about time you sorted a camera, everybody and his dog has a camera, even mobile phones have em. using mole grips may be risky might be better to have a nut welded onto the broken stud, this has the added benefit of heating the thing up as well, mole grips can grind down and chew up the stud especially of the stud isnt the full lenth of the jaws. However you can help this situ if you place something of equal diameter in the opposite end of the jaw, it keeps the jaws parallel. But all this is a guess as i cant see what the problem is....dohhhh!!!!!!!

Am i right in thinking the engine with the sawed bolt is not going back in yet, while you tinker with it and make it better?

Hi and welcome stacey Keep an eye on tyre pressures, chain adjustment and two stroke oil level in the tank. This bike is a two stroke unlike the YBR so you will see an oil light (Red) come on when in neutral, this is a bulb check facility and if it does not come on you need a new indicator bulb. If it comes on when in gear there is no need to panic but re-fill as soon as convenient, these bikes are quite fondly regarded and a good one will be surprisingly nippy for such a small engine. ...Paul

Dont try to get that bolt out yet you may make things ten times worse, post a picture

Well thats always a thing worth tring on a lighweight bike, only this morning I suggested the same, hope it works for him too

If the pump is moving up / down in a uniform manner then it looks as though the drive is ok doesnt it? so if thats the case the pump may be faulty.

Get someone to give you some help bump starting it, got any hills nearby?...Ohh you are using the choke arent you?

Same speed but increasing revs = Clutch slip, you may need a new clutch plate set.

does it lose its spark when hot?

yes you need a new on, best keep an eye on ebay unless you buy one at great expense from Yamaha. They do two different ones though, one is the diamond shaped one and the other is a rectangle sort of shape with curved sides (like the shape inside the pulley) I assume you could use either but thats just a guess.

Confusing post and title. The diamond shape is on the power valve, it is driven by the pulley, have a look in mt de-restricting thread you will see it there.

these things are silent. can you see the pulley and the shaft it's on reciprocating? have you bled the pump properly until only oil came out?

Glad youre ok kev, yes take some photos before its cleaned up. Maybe enlist the services of sorrymate.com