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  1. Started by davet,

    Is there anyone out there got a owners manual 1977 TY who can photocopy me a copy , or PDF . Cheers .

  2. Started by gjw5670,

    Hi guys, can anyone identify this TY seat ? Is it 250 or 175 ? I got it with a 1978 TY. I`ve tried it with the brackets fitted but it seems too small for the frame.

    • 5 replies
    • 2.2k views
  3. Started by aldy13,

    Hi, just bought TY 250 and the castle nut on the rear wheel spindle is tightened up way past the holes for the split pin, is there a spacer between the wheel bearing dust cover and the swing arm on the sprocket side? Cheers Andy

    • 2 replies
    • 2.4k views
  4. Started by biffsgasgas,

    So I have been told to shave down the ty175 flywheel weight. Then i have been told to remove it. Then told to not touch it. So what has been done out there? Removal Shaved or left alone? --Biff

  5. Started by tylermerrill,

    hey i have trial 80 and im getting power from the magneto but no spark to the coil relly need help

    • 1 reply
    • 1.2k views
  6. Started by andy.t,

    Sorry if its been mentioned before. I have modified some yokes in the past to move the handle bars forward but I have just fitted some nice TY250 forks and Yokes to my 175. I didn't want to cut up the yokes like I did before so I thought I would try some Rox Risers. I like the extra height and adjustment that they give you. Just thought I would give it a mention for those people seeking some extra bar height

      • Like
    • 16 replies
    • 8.2k views
  7. Started by aldy13,

    Hi I need a couple of rim locks for my TY 250 are they the same size as the rim i.e 1.85 ? Regards Andy

    • 1 reply
    • 1.5k views
  8. Started by badmotofo,

    I thought I'd share. Great exposure. I love the bike.

    • 3 replies
    • 2.3k views
  9. Started by jester84,

    just took a gamble on this bike for $50 cdn. breaks are siezed engine is not. tank and seat appear to be honda xl? lower frame section was replaced with some checker plate aluminumm some digging on the net leads me to believe its a ty250 any ways just posting here as this seems like a good place for reasearch and advice. while i figure out what to do with it. if its even worth fixing,parting out or just scrap metal. please feel free to post sujestions.

      • Like
    • 5 replies
    • 2.5k views
  10. Started by anthony121,

    Hi everyone. The 2 exhaust studs on my TY175 have been butchered by the previous owner so it looks like I am going to have to helicoil them. I just thought I would check on here to see if anybody else has done them and if there is anything I should watch out for.Thanks.

      • Like
    • 10 replies
    • 2.6k views
  11. Started by johnc,

    Need new valve for rear tubeless tyre on TY250Z (TYZ). Have the Yamaha part no but can't find original part in UK. Are the valves all the same size on Trials bikes and would a car one do the job? Cheers, John.

      • Like
    • 2 replies
    • 2.3k views
  12. Started by sean22,

    Hi does anyone know if a ty50 fuel tap will fit a ty80 there seems to be loads available for ty 50 but not for ty80. thanks Sean

    • 4 replies
    • 1.8k views
  13. Started by slack,

    Hi all does any one know if you can still buy the promonty exhausts for the yam mono and where from. Thanks.

    • 0 replies
    • 1.8k views
  14. Started by slack,

    Hi I have just purchased chain+ sprockets for the yam, can someone tell me the right way to loosing the front sprocket nut. Is it anticlockwise as I can't see any locking washer on it.Thanks.

    • 2 replies
    • 2.1k views
  15. Started by nicbrrghs,

    My ty175 is currently on .25 oversize. I would like a recommendation for someone to re-bore to next size and perhaps cost-dependent do a mild port tune

    • 0 replies
    • 1.9k views
  16. Started by davet,

    Eh op all . Trying to source a manual any ideas , links or leads . Thanks in advance Dave

    • 1 reply
    • 1.8k views
  17. Started by metisse,

    I have just bought this and its got a list of illnesses , the main and really only one left, is a worn carb. I would like to replace the original TK for the equivlent Mikuni. After making some enquires it appears the dark arts of carburation are in force when it comes to this particular Yamaha. Would any kind person help me in pointing at the carb I might need, along with the relevent jet / needle sizes so I at least try and get it to run halfway right. I would love it to be a bolt on straight of the box , is this really too much to ask.. Thanks in advance

    • 1 reply
    • 2.2k views
  18. 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?

    • 3 replies
    • 1.9k views
  19. Started by dmc2028372,

    Hi Need to replace the front brake pads on my ty mono. What are the best pads available for a good sharp brake? A gent did tell me that there is a firm in the midlands that make very good after market pads? Can anyone help? Thanks

    • 6 replies
    • 2.8k views
  20. Started by fxstbi,

    I'm restoring a '74 250 and when I disassembled it I noticed that the rear mud guard is completely worn through on the left side from the tire rubbing it through the years. I've tried to get it centered better than the original holes will allow but the tire still rubs. Anyone one experience this and if so what did you do? I've seen used mud guards on eBay and some of them have the same wear as mine. I'm interested in any suggestions or solutions will be appreciated. I have no problem modifying if necessary. Thanks in advance.

      • Like
    • 3 replies
    • 2.5k views

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