Yamaha

Hi there Hopefully someone can give me a bit of advice on my son's TY80 It starts from cold no problem, choke on and first or second kick. Problem is when it's warmed up, it won't start. I've tried full throttle (as I would with a flooded engine) but that doesn't work either. If you then bump it, it starts no problem (within a couple of seconds). Leave the bike a while, then it starts no problem (ie - today after packing up, drove home (15 minutes) took the bike off the trailer - petrol on, choke on and it started first kick !!) any advice appreciated cheers John

Hi there,i've just bought my first TY,it's a 125 and i want to know lots of stuff about them...... mix ratio,tyre pressures and any "normal" problems mods etc.Ta.

I spotted a Miller framed Ty 175 going for spares on e-bay yesterday but didn't realise it must have been closing later on that day. Did anyone see if it went for much more than the

Which is the best repackable tailpipe for an 86 ty270 mono? Had WES go before but for a £30 saving is the DEP looking pipe that SM does okay?

After a shocking ride at a recent 2 day trial i have decided to try and get the TY sorted ! The problem is the engine takes ages to rev up its very very flat at top end ,if i hold the throttle wide open and let it rev its nuts off it seems to clear itself after about 10 seconds but then runs crap straight after .Bottom end power seems really good and loads of torque Things i have done so far 1) Stripped carb cleaned out and replaced little o'ring on main jet. 2) Replaced main seals on crank 3) Tried altering ignition timing 4) Altered main jet height for less fuel (plug was black) Any help with this problem would be very appreciated !!

Hey everyone. I'm new here, but I'm working on my late uncles 76 TY250, it ran for a bit, then I parked it. Trying to start it back up after about 3 years of sitting. And no spark. I cleaned the carb and tank out nice and shinny. I noticed, my dog had chewed a few of the wires up. So I'm hoping someone might now where they connect to. From the flywheel case up to the frame. I have a black, yellow red stripe, and solid yellow from the engine. Above that I have 2 black wires, a blue and yellow with red stripe coming down from the frame. Any help is very appreciated. Thank you.

Does anyone know if these can be replaced by just removing the outer casings and flywheel/stator etc. Cheers

mechanical maestros, if you could tolerate yet another question from the ignoramus..... i realized at 160lbs (72kg) i'm on the border between 40 and 50 lb springs. maybe i should have got 50 lbs as i ride mostly road here in NYC but i went with 40lbs on the new falcons as that's what the guy sent me from the UK. i know the 40lbs are perfect for trials use however now methinks maybe i need to set them on max pre load as they seem a tad soft. im used to the thread/tool adjuster and the original step adjuster type pre loads, but not sure what the procedure is for these cir-clips? no doubt its super easy and you're all laughing, but i don't want to damage them…

Just bought a 75 TY250B for restore. Can anyone tell me of any websites for info, parts, forums, chat rooms, clubs, etc. Greg

Hi folks, Any one here know the volume of oil to put in the standard forks of the above bike, and what is the best pre mix ratio useing fully synthetic oil? Any help appreciated. Cheers

I have just bought one of these fine machines and was wondering if the good Folk on this Forum would have any info to help in keeping it in Trialable condition? Specifically parts availability and manuals / handbooks (Photocopies or purchase) would be apreciated. Any advice on setting up and fuel oil mix ratio - basically anything! Don,t seem as common as the aircooled TY but looks a very well built bit of kit Looking to start competing this Spring (once the mud is out the way) in the North East Thanks in advance

Hi Came across this on ebay: http://cgi.ebay.co.uk/Yamaha-TY250-Classic...1QQcmdZViewItem Looks very nice. Cheers Scott

I have a 1976 ty175. Have noticed lately that the bike is hard to get into gear. The lever seems hard to move and does not seem to want to return back (wants to stay in highest position after shifting) any ideas on what might be causing this.

i know it doesn't look to good but before i spend some money on it i wanted a go on it that water don't look to deep boy was i wrong found this little area and a couple of vids really thought i was gonna get wet on the first one http://s190.photobucket.com/albums/z5/gsfi...10_16320001.flv http://s190.photobucket.com/albums/z5/gsfi...10_16300001.flv Dave

I have just recently developed a gearcase oil leak on my Ty250a. Just below the countershaft sprocket and above the shiftshaft there is a hole that is cast in the crankcase that appears to be for a shift fork shaft from inside the case. The oil is seeping from that hole. On my Ty250c this hole is closed. Is there a seal on the inside or plug on the outside? Thanks! Steve

My son bought an old TY80 and needed to replace the fork seals. The bike is somewhere between a 1976 and 1982 model. To cut a long story short the fork seals are ancient and pretty much stuck in the forks. During our trying to get them out the top of the seal has come away and try as we might we cant get the bottom part of the seal out. My plan is now to take the forks completely apart in order to release the damaged seal. Do I need a fork damper tool and if so is there a specific one for this bike? If not, how do I take the forks apart. I saw there was a posting back in 2007 but it seemed untried on a TY80 and I dont want to cause any damage. Any help would be greatfully…

Hi The Oil pump on the TY80 I'm rebuilding is disconnected, but still in place. To remove, does it simply unbolt, or do you need to split the cases ? The pump itself has been removed but the driveshaft won't come out, and the driveshaft rotates with the engine ? Any help appreciated cheers John

Hi, all new to the forum, ive just bought a ty 250 trials bike dont now the year, but i think it needs new clutch friction plates as the bite is right at the end and sometimes its not going into gear if changing fast if you take your time it goes in fine? Just wondering if its an easy job and the cost? Thanks,

How much should a TYZ 250 from 1994 in excellent running condition (750 km) cost? Cheers, Fons.

I picked up this well used 74 250 about a year and a half ago on the cheap. I have had a couple 175's but never a 250 and wanted to build one for the local ITSA series. Here's what I started with. And what I have now. I still need to decide what shocks I want to buy and I would love to find a set of vintage Renthall handlebars. I'm still playing with the footpeg location but over all I'm pretty pleased with it. I got most of the money I paid for the bike back by ebaying the stock parts I didn't use.