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Hi all, I am finally sorting out the old DT125LC (1986) we've had in the shed for years. All stripped down, repainting lots of bits and in evenings doing the engine. Will be replacing seals and bearings etc. But the cylinder is worrying me since there is the space for the power valve with both end caps fitted but on opening it up it revealed there is no power valve in there. When we bought the bike years ago it was running and tootled around the farmers yard I bought it from but was in such a state that it was not fully testable. So I'm wondering if once rebuilt whether the engine will run well without a power valve fitted or will I just have loads of issues getting it to run properly like that? Lots of carbon build up on the inside of the end cap I took off so looks like it may have been run like that for a while. Was this possibly something owners did back in the day? Anyway, hoping someone on here has some thoughts. Tried looking for a second hand power valve to put in there but they seem quite rare. Can upload pics if needed. Thanks in advance.

Closest I've got is an XSR 125. I'm selling it tomorrow... lol

Who has a TX500 or an XS500 here on the Yamaha Owners Club forum …

How about JASO MA2 specification for oil which is intended for clutches that run in oil … I get to answer myself when I found the answers here https://yambits.co.uk/oils_parts_for_yamaha_xs500.html

What motor oil is recommended to use on the XS500 … Have some other old 4-strokes that I use 10W-40 Semi Synthetic JASO MA2 on that work very well.

sorry but this section is for form issues not bike issues. I'll move it to the relevant section.

Excellent, thanks very much for your help mate

Hi there, a warm welcome from us all, Nice collection of big bikes you have there too. I recently answered a similar question about registration here. https://yamahaclub.com/forums/topic/47959-registering-an-old-bike/ where member mervin came to the rescue with the answer, Have a read that should point you in the right direction. I'd edit out your matching frame numbers to be 525 XXXXX, the first numbers relate to the model , but the last numbers are the serial number, and not that I don't trust people but i don't!! its a public forum viewed worldwide, and If I was unscrupulous, I could use your legit numbers to notify DVLA myself and clone your machine!!. Just looking out for you there mate. That aside nice to have you on board, look forward to reading your future posts.

Hello everyone, I’m Yamaha mad, got 3 R1’s , fzr1000, xt600, xj550, rd400 and a couple of fizzy’s, I’ve also just got a ty175 because i want to try a bit of twin shock trials, I would like to get a v5 logbook for it.The only information I have for it are the engine and frame numbers match ( 525 xxxxxxI think it’s a 1976 model, can anyone tell me what i need to do to get a logbook for it?

Thanks for the tip on the decal set, have already ordered 2 sets in silver and 2 sets in gold, so we'll see which color I choose http://www.bike-stickers.com/homepage.htm

another warm welcome from me.

Have you tried You tube? Lots of XS500 videos, too many for me to view, but I notice this blue one has the same size font on the side panels as your photo of the black one. it maybe a case of going through them as some may have the correct tank but not side panel and visa versa.

get these from image works http://www.bike-stickers.com/homepage.htm

https://www.motorcycleclassics.com/classic-japanese-motorcycles/classic-yamaha-motorcycles/1978-yamaha-xs500e-zmmz14ndzkel/ close

Does anyone have a good picture of the XS500 in this color scheme, black with gold or silver decals on the tank and side covers …

Thanks for the replies. I have the parts catalogue and depending on the colour the part code will be different. The only thing that seems to stay the same is the code stamped on the underside of headlight bowl and as I'm doing a total restoration it doesn't matter to me what colour it is as I will respray it anyway. I have a Yamaha at2 also and that has a code YHA 11 SAE M68 so I was hoping that the missing headlight would have a code of some sort. Thanks for any help Julfra

Welcome

Welcome

Could there be a lot of similar parts on RS100 vs RS125 … Link: https://www.cmsnl.com/yamaha-rs100-1975-usa_model8543/partslist/

This is all I've found: Yamaha RS125 (479) 1974-1975 USED OEM Parts List Manual Book 479-28198-05 | eBay Yambits : for Yamaha bikes

I am restoring a yamaha rs125 and the bike i bought is missing the headlight, bowl and lens. If anyone owns this model could they have a look on the bowl as there should be a code something like YHA 107 SAE60. Thanking you in anticipation Jufra

I'm looking for a set for my Thunderace, but not come up with any I like yet. But I don't doubt others on the forum will know...

Moved... The thing with classics is that the parts are no longer made. So I doubt you'll ever find a 'one stop shop' for them. You find them where you can I'm afraid...

Sounds like an adventure... Welcome in!