NE0

Or Doug.... Having just re-read your post... I think you're referring to the Advance and retard arm which is fitted INSIDE the magneto unit. I looked on ebay and found a 1974 Magneto unit and there was a close up photo of the inside. Unfortunately, the part in question is part of the rotor assembly and does not have its own part number. You would need to source a replacement rotor (magneto unit) to obtain the part you are seeking. NB. For many of you who might be reading this :- Generator, magneto, rotor, flywheel are all (rightly or wrongly) terms used by owners worldwide for the same thing!

Hi Doug Initially i thought you were referring to the lubricating sleeve arm. As it's a points based flywheel (Not CDI). There is an arm which screws onto the backplate which is the carrier for the little pad which is soaked in oil, to lubricate the cam. Go to cmsnl website and find DT175 parts list and under flywheel magneto image you will find .... Part 11 and 12 in the above diagram refer to the pad and retaining screw, its not clear from this diagram whether the pad comes attached to the arm as a replaceble part. The photo appears to be a replacement pad only.

Hi Richsteer Welcome to the site, and to the world of biking ( XJ550 nice first bike) There are various websites which sell parts for Yamahas One which will be helpful will be this site https://www.cmsnl.com/yamaha-xj550_model16827/ Once you get used to navigating around you can find which other bikes (if any) share the parts. Unfortunately it would appear that the carbs only fit the XJ500 (Europe model). Assume you are in UK? or USA? Nonethless, new carbs won't be cheap and bear in mind a 1981 bike is already forty years old!! Most suppliers don't often keep new original unsold parts on the shelf for so long. You may be able to get 'pattern parts'. remade carbs but its questionable whether it was popular enough and has enough of a following for a company to invest in making them. (bear in mind the carbs don't appear to fit anything else). Which leaves you with the second hand market of ebay and other such sites. Then its all down to luck and whether someone has a set of four to sell. You might have better luck on looking "worldwide" instead of your local country. There's none available (only pattern repair parts) in the UK, I've just looked for you. Unfortunately theres also none available "worldwide" either...but thats just today. Looking at the 'completed sales'....there hasn't been any either recently. However, there has been a couple of 'barn find' XJ550s which were purchased both selling for under £500. So there is a chance of getting something for spares. Which might be useful if you've got one. I must say that I might have wondered why a bike was being sold WITHOUT its carbs? it may be the previous owner was having the same difficulty. just my thoughts. Anyway i wish you well in your search...keep us informed. Good Luck ..

Hello there MG, welcome to the group. Lots of big boys there MG! all over a litre!, i remember a time when it seemed like only the Electra Glide was over 1000. Where abouts are you in Kent?(general location only) Son has recently moved to "HawkyHinges!" so getting to know the area slowly. I'm along the SouthCoast near Sunny Brighton, not a cloud in the sky at the moment!! look forward to seeing your fleet.

It reminds me of the R1 video from 10 years ago!! complete with music from the Matrix.............I wonder if this guy is still alive?

I see the graphics on this latest game are approaching being rather realistic!! The give away being no spray from the tyres and nobody can ride that fast in the wet without taking a spill.!! Enjoy...

Is this a UK bike? Road legal? or a dirt bike used elsewhere? Presumably you've not had it long otherwise you'd know where the switch was.? if there's no switches on the other handle bar, have you considered asking the previous owner if there was one?

What would be ideal for you is a headless bushing adapter. Unfortunately I can't find one big enough!! M14 to M10 seems to the biggest. Although thinking about it 17mm to 19mm is only 2mm difference thick, so its going to be thin! which may be the reason they don't exist. The guys who could probably answer this in detail would be a custom bike maker, where everything is built practically from scratch! I'd err on the side of opening the hole even larger, welding in some solid rod and redrilling that and taping a new hole.

Hi Lotty, As Telly Savalis once sung a song!!....A picture paints a thousand words.....sing??? He practically talked his way through the song!....anyway.....I've re read your previous posts about your DT, it seems you successfully managed to upload photos via photobucket before... You could try again using Flickr as photobucket no longer works. There is an excellent step by step guide by drewpy here:- https://yamahaclub.com/forums/topic/45201-uploading-photos/ Your uploads attempt seem to be done with Outlook and its linked to your hotmail account. (hovering over the broken photo link gives the world this information).

Why's that then bud? Are you restoring it to concours and just showing it? Not being funny mate but I've been down the concours route and it's not worth it. It's very expensive to keep it "showroom", especially for a classic motorbike, where everything has to be 'perfect' to win prizes. It can consume you.

I re-embedded them this morning, they appeared again, but now they've disappeared again.. I did the same with Chrome and the same thing happened. They appear for a few minutes, but the link fails. Must be a Dropbox related problem, I'd recommend re-uploading them into Flickr as recommended by YOC.

mmmm....Photos seemed to have gone from my posts! They were there....honest! the link I embedded was this https://uce17a2cfdf4e8e825edb6623891.previews.dropboxusercontent.com/p/thumb/ABN7d9ZsZFaOqQXwa1BIFDSUcIziY8akLAn1PAFh-Y5WMlm_esdYM2E0N7VRNn65efT-Fwu11sZuLdmhptEZ4j6R9nZCjIKCd-44UPjMFOXsaz1-yWtbjac9xLGaQhrSo02bUs6ndNm4oUMjc8HivAGfwiSPviyDSZN46GJ4aR2LuIZk1fMKHAAV88f9PrRxWPPT9NmWCTd7taxZKqkK3W3dH1DYZy1vtE9FXf4rBqdzo9WFAemHyjThmoGVC2AMWYljBJh9YuFUe92fzouxoTZ_axJEYsgpQOjmyDTla_0pvz4oC0WxvIZyBRst308kfC5RlSO36zlRQh2M8oD9MQftp57dWFPk8nn0VdsyGZ5noKmN_77o5hAaFxpwQvtkM6bAXYY0Pal0X5Ln24HO8eIQ/p.jpeg?fv_content=true&size_mode=5 whereas it seems to have been truncated and ended up as p.jpeg?fv_content=true&size_mode=5 which is the last part of the link....

Welcome Justin, nice intro, well done for taking the time and effort to write one. Nice bike you got there, I like the 3 into one exhaust, not disimilar to my Honda 400/4 with 4 its snake pipes into one. I guess being a 77 its one of the first bikes to see mag Wheels as it was probably around that time they were introduced. My 75 is wire spoked and i don't recall seeing mag wheels anytime before 77. A lot of the members (the regular ones who respond) are all UK based and I assume CO and GA are in the US? At present the forum is a quiet place compared to a few years ago when it certainly was a lot more active. Nonetheless, welcome to the forum, hope you enjoy the place.

How odd!, I can see them in mine and in your reply post Snake. Yet if i click on the actual photo of my post I get a Dropbox410 error. Not sure what a 410 is,! same as a 404 I guess😆 I'm using Firefox if that makes any difference.? Its even more perplexing as they have now disappeared from mine too!!!....I wonder if Dropbox are offline?

Try that? You're probably wondering how i did that? I hacked the Main frame using a Trace program after I went down the rabbit hole......hang on!.....back to the Real World.....it wasn't as exciting as that!!..... I initially clicked on the dropbox link which took me to the dropbox photos then right clicking over the image I picked "Copy image link" from the menu and inserted that link into my post and the photo came up within my post. Hope that helps.

That's the most sensible answer I've seen for a long time, Excellent.👍. I like the way you think! Although in his case, he mentioned it's already snapped. So as Finnerz says:- just buy one with a rivet link.

That is a very nice little project for someone. Appears to be all there, easy strip down. Being small and compact would be great even for a small workshop/shed. E Reg 1987/88...based on the current 40year exemption that will be Tax and MOT free in 7 years time. Might not be something that will be ridden around much once restored but would make a excellent 'showpiece' for someone.

You might want to edit out those numbers as its ALL the details someone needs to clone your bike and drive off into the sunset.

There you go.. https://www.comparus.co.uk/products/centre-stand-yamaha-tdm-900-02-13-constands-934135.htm?k=&gclid=EAIaIQobChMIi9rZz7iN8QIVlp3VCh0_2AR2EAQYGiABEgIQ7_D_BwE

Thanks Snake, all corrected.👍 but.....you knew about the website though surely? (....Feedline for you😀)

Hi Jed, The website cmsnl.com has parts lists and diagrams of all bikes, when you select an item it also tells you what other bikes share the same part number, might be useful to you. Depends how desperate you are for them, I've just looked on ebay and there are 2 front wheels and 3 rear wheels available for the IR7, i appreciate they are in Germany. All around the £140 plus p&p mark. I've bought difficult to obtain parts for my DT from France and Germany in the past from ebay, never had a problem. Hope this helps.

You're not wrong. Although Alex will have to go to the Australian version of Amazon and Pro-bolt given that's where he lives.😀

How you getting on with the Helicoil quest Alex? Based on the assumption that its a standard metric thread then the socket size should give you an idea of the stud. the general rule for standard sockets for metric threads are as follows: m5 nut/bolt/screw = 8mm socket m6 = 10mm socket m8 = 13mm socket m10 = 17mm socket m12 = 19mm socket I've done a bit of googling and found the stud on the parts diagram for the MT-09 cush drive of the rear wheel. https://www.motorcyclespareparts.eu/en/yamaha-parts/2016-mt09-tracer-abs-motorcycles/rear-wheel (regardeless of year they all seem to share the same nuts and studs) The stud (15) is part number 90116-10048-00 and the nut (16) is part number 95602-10200-00 Putting those in Google I managed to find that the nut takes a 17mm socket therefore its likely its an M10 stud. I then stumbled across the break down of the Yamaha part numbers 90116 = are indeed studs and all self lock nuts start = 95602 the next two numbers are the M size= 10. That confirms that then! Unfortunately none of the rest of the code indicates the thread pitch! However, i did manage to find a close up photo of the stud part number : https://www.bts24.co.uk/en/transmission/chaindrive/rearsprocket/mountingbolt/screwsprocketoriginalsparepart901161004800.html?utm_source=dlvr.it&utm_medium=facebook Although the photo could be a generic photo I found one for sale on ebay that someone was selling showing the actual packet and the stud with it and this shows that it has the same thread on both ends. The reason I mention this is studs that fit exhausts, which are also double ended, have a much coarser thread for the stud part that screws into the engine block. However, in this case the ebay photo confirms it is the same thread on both ends of the stud. Using the first chart shows M10 being available in three pitches, 1.0, 1.25 and 1.5mm, unfortunatley I couldn't find any confirmation of the pitch size for the nut or stud other than the standard metric thread for an M10 appears to be 1.0mm. The other two are finer and I don't think you can decipher which it is just by the photo, unless someone knows any different. Hope this helps you Alex. NE0

Hi Alex, The good news is all our jap bikes are metric! I've used helicoils on both my Honda and Yamaha, in my cases the studs were M6 and an M8 so i just bought the M6 and M8 ones and they fitted fine. There is a useful chart here:- https://www.thorintl.com/Drill-Sizes-HeliCoils-Metric.shtml I had to drill the worn out thread with the correct drill, and rethread the hole (all supplied in the kit) and the tool came with it to insert them, but technically its just a bit of coiled wire that goes in tight within the newly threaded hole and the stud just screws into the thread made by the coil of wire. However a threaded insert sleeve is different to a helicoil and are designed for more load bearing. These are double threaded metal sleeves These require the hole to be drilled to a bigger size and retapped as the threaded insert is made from thicker metal. If it's a cush drive, I'm wondering whether a threaded insert may be more substantial and therefore more suitable.? Either way you will need the thread pitch and diameter of the exitsing stud.

Thinking about it.... You said in your first post ..that she starts and runs fine....if you DID have a snapped off RED wire,: i.e you have the Two Source coils version, and your red wire was missing THEN it probably wouldn't run! The two source coils are responsible for maintaining the performance at low and high speed with the correct corresponding CDI. It was soon replaced with the single source coil and a different CDI more common on the later models. The CDIs are not compatible with each other. I'm not sure why two coils stacked on top of each other was used. On the one hand it seems over engineered to deal with it, and on the other hand with two coils surely there was two chances of failure?. Either way it didn't last long and obviously not a successful method, otherwise they would have kept it and continued to develop it. The simple answer is, probably someone came up with a cheaper simplified solution of the single coil which matched the performance of the two coil version. So in view of the above, I'd venture to say, the fact you have it running succesfully, the reason why the RED wire is missing is you have the later single source coil and you're looking at the wrong circuit diagram. Hope this helps, look forward to seeing the photos you mention in your first post. Well done bud. I must confess i enjoyed answering this one, got me thinking.