Yamaha Workshop

I have recently aquired another DT which had a few amateur "restoration" issues >, engine oil in the 2 stroke tank ! , copy part barrel and head , seized suspension pin ect , anyway i have been through all the bike swapping some parts from my other DT which is undergoing a total restoration ( i have never run this bike yet ) , this has included a yamaha barrel rebored 1mm over with Mitaka piston , all new carb internals bar the floats plus rubber joints and yamaha filter and new cables all round , i have reset the clutch arm to cable so there is now some free play and checked the float height 3 times as someone had put a big fat copper washer underneath the needle valv…

Hi guys, Someone tried to steal my bike and barrelled it...needed to get to work, so I had to wire it myself wires coming from the ignition barrell were 4...brown,red,blue/yellow,blue/black...brown n red joined gave me my neutral light and red light (oil light) but wouldn't spark when tryin to kick, then I joined blue/yellow and blue/black and it kicked an sparked an started...it ran sluggish then ticked over on 2000 soons I went to rev it over 3500 it cut out, then no spark or red lights!! Wouldn't start again...so put battery on charge for a 3hrs back on bike, but still no red lights an it went 3rd kick, but same happened soons I went to rev ten will not start!! Now th…

Hi I recently changed the oil on my 2001 newly purchased TMAX500. I looked in the manual and filled it with almost 3 litres of oil as recommended in the manual. however, although I am happy there is the correct amount of oil in now, I cannot use the oil check window as it is marked so badly you cannot see anything through it at all. Without renewing the window, any tips as to how I can keep an eye on level? eg dip stick ? Thanks

When I got my bike after a few weeks the rear brake started squeking. After trying brake cleaner it still would squek. It sounds horrible and it embarrasses me, I'm a complete beginner D.I.Y. bike mechanic, but have replaced the pads three times now and it still continues. I can't think of anything else now apart from replacing the disc. The original pads were worn down to the metal so I think they have damaged the disc, also I suspect my bike has its original discs still on six years after been made.

Hi guys! I'm restoring my uncle's RS100T I dunno what year it is but on the engine I see a sort of a serial number, 3VM024196. And it doesn't have a CDI as well. the problem is I bought a new wiring harness and tore all the old wiring harness apart. Now I am new to wiring motorcycles but I managed to rewire my own, the problem is this RS100's wiring system is different than mine so now I am having a terrible headache figuring out how to rewire this thing. I downloaded a manual for an RS100 but unfortunately it is for the one with the CDI which is kinda confusing for me. So far the only thing that I was able to fix is the headlight turning ON/OFF and making it HIGH/LOW and…

Hi All, Just a quick question, I need a YICS tool for the XJ and havng seen the price for a proper one on fleabay (F*****G HELL) and such I have decided to make my own but was wondering if anyone had made one or had one spare that I could borrow for a short time, if not then I have downloaded the drawings from the net and was just going to ask if I made 1 would anyone else like one as well at cost price, it's only a few bits of copper pipe some nuts washers and rubber pipe after all and provided the dimensions are correct I can see no reason why it can't be made. If you have any comments or suggestions (this is where you put your rude comments and totally irrelavent sugge…

the exhaust on my rxs100 isn't the original. I took it off this weekend to look at decarbing it with caustic soda. the baffle was in really tight, but managed to get it out for the first time. The baffle is totally different in style to the one pictured in haynes and has not packing on it. I've read that some baffles don't have packing and I've also read that not having the packing doesn't effect performance or noise level so is not worth replacing. my question is how do I know if this style of baffle needs packing? anyone got one similar. took a pic here:

Hi and thanks for taking a look at this nonsense. I'm looking for a solution to support my exhaust on the YBR 125..... when I remove the hangers. Figured I don't need 'em, I don't take pillion.... lol. So, as I'm going to re-grease the swingarm pivot, I'll not replace them and see what it looks like. It would need to be supported from the swingarm up and across, the exhaust fixing bolt would need to go thru the support first, then attach to the exhaust as it has a threaded nut. I'd be grateful for any ideas, please.

hi all i need your kind help again ive got a looks like a fuel mixed with oil leak on the left hand side of my crank case look like its coming from under my bike driping at a rate of knots down my side stand have you guys got any ideas what it could be?? my haynes manual been no help !! thanks for you time

Hi, has anybody have experiance with dished front sprockets? I'm working on a XS400, Ive fitted a different swing arm to allow for 150 rear tyre on Talon wheels. I need about 8-10mm on the front sprocket to allow for the chain alignment. Thanks

Hi all Another total n00b question... I'm looking to change the pegs on my XVS125, should I be looking somewhere special for bits for my bike or just something that fits? Are there specific brands (like with gear & lids) that I should look for / avoid? Many thanks M

So... After having stripped EVERYTHING, and I mean EVERYTHING from the bike, cleaned it all, checked all engine specs, altered valve clearance height, installed new gaskets, cleaned cylinder head, piston, installed new rings, refitted electrics, cleaned air filter, went over the whole bloody bike cleaning every terminal and square mm of the damn thing, remounted engine, filled with silkolene, fitted new jet on the carb, and started it up... I was pleasantly surprised that it started well, without choke or throttle, but didnt idle for long. As I expected as the fluids need to circulate etc. So eventually it ticked over nicely, and I adjusted the fuel mixture and it sti…

Hi, I have a YBR125 Custom, 2010 Vintage. It has never missed a beat until this afternoon when it conked out within a minute of me starting it up; having been left in the strong sun all morning. Called out RAC who concluded that the fuel pump was not working. Having looked on the web and this site in particular it appears to be a common problem. Lots of people were moaning about it last year and the year before. Did anyone hear if a solution was found? Did Yamaha admit that it was a design fault and agree to replace the fuel pumps FOC? Any advice would be gratefully received. Thanks, David.

My neutral light is intermittant sometimes works so thought i might clean switch but cant find how to get the switch off or locate it. can see wires go behind sprocket but cant get to it.have repair manual but no help can anyone advise me please thanks Al

Hi I am new to this forumn My son have bought a Aerox YQ50 Scooter and we are having problems with the cooling system ( I am not experienced with liquid cooled bikes) We have a leak from the water pump into the casing behind I have a W/P repair kit on its way. Hopfully the repair will fix the leak. I have also noticed that there is a "Thermo Switch" coming out of the head which is disconnected. When it is reconnected the red warning light (no gauge) comes on even when cold. A What does the switch do? does it just indicate when the engine is hot or does it switch on the water pump? B Does the water pump work all the time or at a set temp? C Is it likley the sw…

Hello everyone I'm Liam i have had my Yamaha DT 125 R T reg for around two weeks and until two days ago it was running smoothly with no issues then while going to work it suddenly coughed and the engine died. It will start up now and then but when i go to the higher (5-6 thousand) revs it cuts out again. its three quarters full of fresh fuel checked my spark plug and its clean. checked fuel line and seems to flow well Indicators etc work when ignition turned on Apologies in advance if this is badly explained i have very little mechanical experience. Thank you.

can anyone tell me how to remove the neutral switch please

Hi. I was adjusting the chain slack on my wife's YBR125 the other day and I noticed play in the swinging arm. On closer inspection, the bolt was loose. I took it out, greased it up and nipped it right up again so now there is no slack. The only thing is, I assume it should be torqued up correctly and the owners manual has no data on that. Does anyone have the correct torque setting and any other useful advice about servicing the the swinging arm. Many thanks in advance.

after 30 hours in my workshop ive got to this stage -recieved bike -replaced all missing bolts/parts taken off and not put back on -bought new battery and installed -discovered knacked solenoid -repaired the starter motor -discovered weak spark heres the bag, when i short the solenoid the engine tries to turn over and a few times has nearly fired, i need to check and clean the connections to the ht coil , buy a new gasket set and solanoid. But theres an occasional drip from the carb so it maybe a case of the fuel mix not correct and weak spark? am i running along the right lines? jay

Hi I have 1993 Yamaha dt 50 R with DT/RD 80 engine. I was wondering, is it posible to fit DT 125 engine (2 stroke)? Or xt 125 (4 stroke)? Thanks