TomDrewett Posted April 7, 2023 Share Posted April 7, 2023 Riding for about a year, owner of a fairly rough 1991 model and enjoying the trials of running a 30 year old small bike Link to comment Share on other sites More sharing options...
Moderator Snakebite68 Posted April 8, 2023 Moderator Share Posted April 8, 2023 Yeah, that does look a little rough! And possibly like it's frame has been modified! lol. I like that you're apparently fixing some of it with a hammer though... 1 Link to comment Share on other sites More sharing options...
TomDrewett Posted April 8, 2023 Author Share Posted April 8, 2023 If you can’t fix it with a hammer then it must be electrical! yes, previous owner did rather a hacksaw job on the frame, I can see what he was aiming for but craftsman he was not! current issue I have is CDI Unit. One unit and the bike will only tickle 50mph, the other it runs like a dream 60mph plus for about 12 miles, then misfires and conks out. I’m trying to find out if there is a modern workaround / new unit that can be made to work Link to comment Share on other sites More sharing options...
Moderator Snakebite68 Posted April 8, 2023 Moderator Share Posted April 8, 2023 I suspect neither of them are set at factory settings... Link to comment Share on other sites More sharing options...
TomDrewett Posted June 2, 2023 Author Share Posted June 2, 2023 No progress on CDI unit, have had a couple of used ones through EBay which haven’t generated a spark at all. On the plus side Theory Test Passed and Module 1 booked for late June 1 Link to comment Share on other sites More sharing options...
YamaMatt Posted September 1, 2023 Share Posted September 1, 2023 (edited) I have a 91 sr125 barn find, cdi is completely gone after many many hours of struggling and fault finding, cannot find the cdi code 5HO- M0 anywhere, I don't believe a newer cdi will work as 3 wires match and the rest are completely different i found... decided not to bugger up the original wiring and after lots of searching I stumbled across a company in Switzerland that has a direct replacement cdi for the 5HO-M0 cdi used 1982-94 which is more performance orientated yet matching the timing etc of the original cdi and what not, it also has connectors for a rev guage which is always a plus! It's a tad costly but I have ordered one and will be giving a go! Here is the link if its of any use! https://moto.chumm-ine.ch/shop/gb/startseite/23-zuendmodul-yamaha-sr-125.html Edited September 1, 2023 by YamaMatt Link to comment Share on other sites More sharing options...
TomDrewett Posted September 29, 2023 Author Share Posted September 29, 2023 Yamamat, let me know how it goes, I also recently came across them and am tempted. I will be selling my SR soon, but rather it was running perfectly before I sell it, and this looks to be an interesting option Link to comment Share on other sites More sharing options...
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