Yamaha

I'm finishing my restoration on my 250 and noticed that there is no plastic guide or wear block on top of the swing arm like there are in the later models. Anyone come up with an alternate solution to prevent the chain from hitting the top of the swing arm?

Can someone please tell me what tools I need to get to change the front tyre on my kids tyz250 and could someone tell me how the hell do you get it off. Thanks

hello dear cyber friends, so moving onto replacing steering head bearings now (74TYa). Are there any top tips or special tools i should think about or read up on before embarking on this (for me) cryptic conundrum of mechanical mastery. are there any surprises replacing the original old ball and race with the new tapered kit? this vid got me a wee bit nervous... ive watched many vids online but they're all big road bikes, and i've searched the forum and found a few things, but if i'm missing a useful thread and this has been covered before please direct me there! im just looking for a basic walk through on procedure if different/easier on a…

Does any body know anything about this bike? It is shown on TY Offroad

Hi ,well here i am ,new to all this .i have just brought a yamaha ty 250 can any one tell mewhere to find the chassis number?.and any other tips regarding this bike would be helpfull,eg the best place for parts etc? regards tony

hi as your aware the bush wears in the gear linkage cover on the tys especially the ty175 there is some fixes but some are expensive ive tried something that works superbly and makes gear changeing a lot more responsive as the main oil seal is behind the cover the outer oil seal behind the lever is more of a dust seal as no oil should be behind the cover if it is then the inner seal has gone . i removed the outer seal and fitted a 12mm x 19mm x12mm bearing that i pressed into the casing where the external oil seal should be pressed it in with my vice and two pieces of wood so not to damage, the bearing fits tight and the shaft is nice and snug this allowing the gea…

My clutch is slipping on my 250 mono, and there seems to me no more adjustment i can make so i suspect the clutch friction plates are worn out. i have seen these plates on ebay for £25 about half the price of any others ive seen http://www.ebay.co.uk/itm/220994976060?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_1328wt_1037 does anyone know if they will be any use? Cheers Lewis

If you had a trials bike with this number 82 09143 stamped on the head stock in quite small numbers , is it familiar or recognisable to anyone here ?.....Pitley ?

Does anyone know. Can I take my 1986 Yamaha TY350 cylinder and have it bored out. And then use it without new chrome? Is the material under the chrome hard enough to run a piston in? Alternately. Will a TY250 top end fit on the TY350 block? Thanks.

Here's a photograph, never published before, of a classic Yamaha in action. Taken by James Moorhouse it shows Tony Scarlett winning the Yeadon & Guiseley British Arena trial in 1986 Enjoy - for more details PM me

Just finished a rebuild on my Pinky, I've bought a metal tank off an older TY mono for now but I was wondering if anybody has any ideas on how to clean up the outside of a mono plastic tank?. I dont't want to spray it as I know it will bubble off, surely there must be some kind of a mild acid soap that can take off the horrible yellow colour these tanks seem to go....any thoughts?

Well this old bike is still giving me surprises and while I'm waiting on the cylinder re-bore and new piston, I thought I should look at how much crud was hiding in the tail pipe. Not to be disappointed, the tail pipe decided to cough up a couple of peanut sized chunks of pure carbon. So I know there is more in there somewhere. took off the expansion chamber too of course and it was not as bad ( I think) but the engine (when it was together) would belch 2 stroke smoke from all angles when it first started up. Could be that this carbon was what was causing the detonation during deceleration? Something was definitely going on in the cylinder. (see pictures below) …

Looking to buy a new set of brake and clutch levers and perchs for my 74 ty 250 I am useing the stock yamaha cables. I have had 2 msr raptor levers, really liked them but they are expensive and brake just thinking about falling. tried the cheap imports and had to modify them to fit the yamaha cables and they break to easy. any suggestion. thanks

Just curious what this little eccentric does.Under the left side engine cover,held tight with a locknut.Part #20 in this diagram.Anyone know how this needs to be set properly? I haven't had a problem with the clutch.Just getting to know the bike better. 1976 model.

forgive me for this simple question but the clutch on my TY seems really heavy,i have fitted a all Yamaha O/E parts as follows clutch cable plates steels springs I had a tang on the basket repaired and refitted. in the manual it says back the cable off remove LH engine cover loosen adj nut and screw in adj screw all way in ,take up slack with middle cable adj the wind adj screw out till it stops the back of a further 1/8 turn and lock the nut,take up remaining slack with middle cable adj and adj on clutch lever bracket. problem is nearly all if not all adj on cable is taken u and clutch still feels v heavy,what am i doing wrong?

Ty 175 clutch cable? hi i have snapped the old lever off, lol. but now i can not adjust the clutch cable up enough! (it is the correct cable i bought it off ty trials 5days ago!) any ideas? thankyou ezra.

Hey Guy's It's been awhile , but here is my question ...The clutch push lever on on my 84 Ty easily lifts up to the point that I can completely remove it from the left side case ..Is this normal ? I've never noticed this before .. thanks

hi all, top day on the TY today, but on getting the bike home, I notice that the clutch has started making a rattle ............. more pronounced with the bike idling in neutral with the clutch lever pulled in, but then as soon as you put it in gear, it stops rattling? any ideas? cheers

On a '74 TY240 there are 3 coils inside the mag. Only one (I guess) feeds the spark, other two for lights. Is there any reason to leave the lighting coils inside a "non-lights" Trials only bike? Second question: what is 434-81332-10-00 PLATE, TIMING since there is no adjustment to the timing what does this plate do? Thanks Alan

A small article on a chap with 9 Yamaha Majesty's, for any of you interested in the make. http://motor.sportku...isnis-dari-bali Must have plenty of cash & an understanding wife!