Yamaha

Hey, All! I'm slowly getting work done on my project TY250A. I got the swingarm "repaired", sandblasted, primered and shot some rattle can enamel on it today. The old "bumps" on the the swingarm that the snail chain adjusters push off of were really worn with grooves somehow. Maybe someone (previous owner) let the rear axle get loose? I say this because there is also damage to the dust collar on the drive side of the sprocket and the inside of the swingarm itself. I dunno how it could've happened, but it did. I ground off the old bumps, and drilled and tapped for 6mm allen headed bolts for the adjusters to work from: Now, I'm working on my fiberglas…

Hi, All! Working on making my recently purchased 1974 TY250 rideable. I'm doing repairs from probably decades of neglect, abuse, and a bit of "Hillbilly Engineering" from the previous owner(s). At the same time, I'm making a few minor "upgrades"; like the Sammy Miller wide footpegs that lower and move the pegs slightly rearwards. This requires removal of the swingarm bolt. While that bolt is out, I thought I'd look into replacing the grease nipple and the pivot bushings. I got the swingarm bolt out after somewhat of an epic battle. Now I'd like to get the long inner bushing out; the one sorta shaped like a long dog bone that goes completely through the swing a…

Hi, does anybody know where I might be able to buy a replacement Whitehawk 175 seat cover . The original ones had a black seat surround with a red quilted centre . Many thanks , Richard

Fitted a electronic ignition as instructuons say. Now ty will only start by putting a drip of petrol down bore. Good spark, new petrol, clean carb, reeds look ok. Timing is 2-3mm measured with strobe. Once running rev/ rides fine. Kicks back up ok. Only tried it for 10mins running Any ideas before i put old ignition on to prove a point, or is 200 majesty timed diffent to a ty175 Thanks

Does anyone have any info on the dimensions of the TY125 majesty. Would one of these be useable by an adult.

Has anyone used KT250 forks on a TY? If so, pros and cons? Did you use a KT or TY wheel? If using a TY wheel, how did you mount the brake arm? Possible scenario is KT250 forks used on a TY175 to have larger/stiffer 34mm front end to get rid of the flex with the small 28mm(?) 175 fork. I haven't been able to source a TY250 set and came across a set from a KT. I was also wondering how the leading axle from the KT would work. Hoping someone has tried this over the last 50 years.

Hi, Is it possible to use 1975-1976 LH and RH crankcases from YZ125 with the all the components and covers of TY175?

Hi, The ball and the spring for the shift cam can be installed through the threaded hole when the cases are put together? or only when the cases are split? (the cases are currently split, and there actually no ball, just spring) Part number: 93505-16006 (#6 in the attached picture) thanks

What is my best option for alternative cylinder (barrel) for 1975 TY175 USA? DT175 or CT175? Or maybe something else? Thanks

Show us your ty bike in any condition! MY TY IN RESTORATION AFTER JUST HAVING A RESPRAY

Hi. I have an ongoing problem with the clutch on my TY175. In a nutshell when in gear and with the lever in, the clutch is not quite disengaging. There is the correct amount of play at the lever and at the adjuster behind the case on the left hand side. I understand there is a couple of different pushrod options with the TY. Some drawings show a Rod, ball and mushroom and some without the ball bearing. I’ve taken the clutch off and there is no ball bearing. However adding a ball bearing means that the pressure plate sits too high. I'm also led to understand that the washers that sit under the inner and outer baskets are different sizes. Could it be that I h…

I have been building a TY175 from bits and pieces left over from a previous restoration. I have an issue with the clutch. If I assemble with the ball between the clutch rods, there is no free play in the mechanism at all and the outer pressure plate is clearly not seating nicely on the last friction plate, being held off by the mushroom rod. If I remove the ball, there is heaps of free play, even with the eccentric adjuster set to max and the clutch only just disengages and will surely drag. The clutch rod and ball were original Yamaha part No, 1W1-16357-00-00. Rod is 122mm, ball is 4.75mm and mushroom rod is 62.4mm. Am I missing something here? I have a s…

If anyone has one that they'd like to sell at a reasonable price, please reach out. Thank you. Tbone.

Hi all, I’ve just picked up a ty80 to restore for my daughter when she’s old enough. unfortunately the engine casing has cracked which has caused oil to get to the stator and the ignition source coil is now giving continuity to ground. im struggling to find a replacement specifically for the ty80. Does anyone know of any other which fits? It’s a single coil stator

Hi team, Had an issue with my TY, engine ran away due to leaking crank seals, totally leaned the poor thing out and had to stall it to stop the engine. Replaced seals and upon re start very noisey, struggling to idle and noticing movement in the head and barrel so presumIng I have stripped the head studs. Has anyone else experienced this? Cheers Rob.

Hello all ,i have a ty 250 (74) and i am having trouble finding a fuel tank . So i was looking around on ebay and saw some dt tanks that look identical , size shape , mounting etc.. ! has anyone ever seen one or done this before ? Im sure the ty175 tank will work but they are rare here as well , will the ty 80 tank fit ?? thaks any help appreciated ! CJ

A 1978 TY250 was left in a stable of a house I bought. After 20yrs of looking at it, I thought I'd get it going. The job was nearly done, but I fear I've just messed it up. The last step was installing a new carb, after which it started fine (multiple times) and sounded decent but did not have enough revs to tick over when the throttle was released. I was adjusting the Idle Adjust Screw, turning it clockwise, and starting to observe an increase in idle revs, when I realised I'd left the choke on. I turned the choke off, and the engine died. Since then I have not been able to start the bike. Not even close. Suspecting that after many failed starting attempts I had flooded …

I really like the looks of the Shedworks Tank/Seat combination; however, I can't figure out if it is compatible with the 1974 TY250? I struggle to understand what is compatible with the rear fender that uses the fiberglass seat pan. In all the pictures I see it seems the models are later versions, with a different rear mudguard and I can't find this other mudguard for sale (I have the short mudguard where the air box is part of the rear mudguard). Is a different rear fender needed for this to work? Is the stock air box compatible with the Shedworks setup? I also see majesty style aluminum tanks that look good, they seem to use a different rear fende…

Hi all, I have a pair of TY250 mono forks model 38V, but the left fork leg doesn’t have a thread cut into it for the axle bolt, the plain hole is small enough diameter to tap a thread into. I’m just wondering why it wouldn’t have had the thread in it already?. Has anyone come across this before? thanks

This might be a tough request to make, but I have a small dilemma. I have a stock 74 TY 250A and I have had everything rebuilt on the engine. But when I tried to install the piston, it touches the flywheel before the flywheel can rotate all the way around. So either I have the wrong piston or the wrong Connecting rod installed. My measurement for the piston skirt is 68.3 mm from the bottom of the lower piston ring to the bottom edge of the piston skirt. Does this seem to be about right? The piston is a genuine Yamaha, from CMS, part number 438-11631-01-96. If anyone has a loose TY 250A -1974 model piston laying around loose they can measure- it …