Airhead

Try measuring resistance to chassis, the 3 stator coils will be the same and the one confusing white will be something completely different, may even be open cct I dont know...just guessing from what i have just read.

Nice intro Joel, welcome to the forums...F1 eh ...intersting.

You didnt say where you are? I guess its USA as 'tear down' is an American expression, we would say 'strip' here. In the UK we had two different carbs although these were basically the same, they were numbered 2H500 and 3U500, they had different components in them. I 'think' the American one was akin to the 3U500 and had an interference fit emulsion tube (AKA needle jet), when you strip the carb down for it's thorough clean...tap this out from the top (downwards) it will not need much of a tap so take it easy as it's soft brass. You may find it gunked up like this so you have to get it out to clean it. also take out the other jets...main jet...pilot jet and the float needle valve (dont damage or lose the gasket under this)..take out the air mixture screw and dont lose the O ring if it has one (which I think it may well have)...take out the choke plunger and check the rubber seat is not damaged. Clean the carb body with carb cleaner and blow through any little passages with compressed air or an air duster. Re-assemble it all and check the float height is set to 21mm (gasket removed) see picture as has been said set the air mixture screw to 1 and 1/2 turns out from gently closed, then adjust the throttle stop screw for idle at around 1200rpm As fpr cpmpression I reckon 100psi should be fine and did you do this test with hot engine? ...Paul

Yeah something is awry if neither screw affects idle, either that or you didnt turn the throttle stop (knurled one) sufficiently clockwise to lift the carb slide and increase the engine speed. Either way if you have just acquired the bike I would recommend a full carb strip and proper clean

so you havent used it all year then?

The link wont work Vez!

Possibly the clutch side crank seal has gone Which also begs the question...Are the crank bearings rough?

how many wires has the CDI got and what colours are they?

http://cgi.ebay.co.uk/YAMAHA-XS750-/320589381988?pt=UK_Motorcycles&hash=item4aa49dc164

No not crossed Dave, have a look at post mumber 31 onwards in this topic for PV setting.

Welcome and have you tried ebay?, thats usually worth a try http://cgi.ebay.com/ebaymotors/Yamaha-FZ600-0151-Left-Plastic-Side-Cover-Panel-_W0QQcmdZViewItemQQhashZitem19bda19bd1QQitemZ110555667409QQptZMotorcyclesQ5fPartsQ5fAccessories http://cgi.ebay.com/ebaymotors/Yamaha-FZ600-0151-Right-Plastic-Side-Cover-Panel-_W0QQcmdZViewItemQQhashZitem19bda19c59QQitemZ110555667545QQptZMotorcyclesQ5fPartsQ5fAccessories

I'll take you along next time I want one then

Sounds good to me as long as its not nicked

Just having a bit of fun Jakey, the earthing of the green/black wire is common practice, let us know how you get on with it and feel free to say hello in the bar

I was joking Jakey, it lasted about 50 miles so you will be ok. Vez has linked the Black and the Green/Black And yes Black is ground...chassis...earth whatever terminology you use

Welcome Jakey Thats our Vez's PV you have posted up, it was going the wrong way but I understand that when he earthed the necessary wire on his CDI...***HEY PRESTO*** His engine blew up

Nice SM (Smokin Monkey) Shame about the rust on the DEP expansion pipe, you can wrap it I suppose or paint it, but if you do it will need painting often to keep it nice

Here you are Phil

Try Jenolite

Wow

Aye right Drewpy, you need to nip this kind o thing in the bud.

Welcome smokinmonkey...mmm Black n Silver eh

Hello Roger and welcome I think you may be in luck with that one, TYtrials sell a kit if it fits yours, good people to deal with from all accounts, why not email them and have a mooch round their website. http://www.tytrials.co.uk/trailandtrialsuk/prod_501953-Full-Chain-amp-Sprocket-Kit-TY250-Twinshock.html

I just bough a car radio/CD 'From a smoke free home' WOOP-DI-FOOKIN-DOOO Wonder if he ever sold an exhaust pipe...or even a 2 stroke motorcycle.

No thanks..I dont want to see it, the internet is a vast place if we want to see tragic gorey events on bikes I'm sure we could find them....unapproved it