DE51GNZ

Hi All, I order all my parts from Fowlers motorcycles. http://www.fowlers.co.uk/ Just give them the yamaha part number and they will have it. If you dont know the number they can help. Hope it helps

Hi Guys, Just a quick post to say i have found a really good site that has online motorbike and ATV manuals. The site has full colour photos of each step of any job you want to do to your bike. I have my XV 125 and have just recently done new clutch and steering bearings and it has been a lifesaver. The site is: CYCLEPEDIA check out the following link: http://www.cyclepedia.com/ The complete list of manuals available is here: http://www.cyclepedi...online-manuals/ The cost is good too. I paid $24.95 for a 1 year access for the XV 250 manual (which is almost the same as my XV 125) You only have to pay $42.92 for a lifetime access to the manual. Thats about £28 for a lifetime!!!!! Not sure if you guys are interested but if you need something more than a Haynes manual then check it out. I find it really useful and it has already saved me a fortune. Regards Dan

Hi Jimmy, I dont seem to have a problem getting parts. I get them from: http://www.fowlers.co.uk/ They have a great service and parts are well priced. Do you have a parts list for the bike? If not send me your email and i will send it over for you. Regards Dan

Hi Beefy, I am with you on this one, when i first got my Xv 125 i had the same problem, so here goes!!! The image below shows the parts diagram and i have colour coded the pipes to help. OK 2 dark blue pipes come from fuel tank and go to the top 2 inlets on the fuel tap. Grey pipe goes from bottom of fuel tap to the side of the fuel pump. Second one down. Red pipe goes from fuel pump to carb. Green pipe goes from left of fuel tap and joins T piece which then goes to bottom of fuel pump and manifold. This is the Vacum pipe. Here are a few photos of mine. hope they help. I think that just about ocvers it but if you need any other help just let me know. Also do you have copies of the XV 250 service manual and XV parts catalogue. If you dont then email me andd i will send them over to you, they helped me a lot. Thing to remember is your not alone. We are here to help if you need it. Regards

Hi, Thanks for all your help. I have moved the indicators and added new wires, all fitted now. Thanks again. I love this site!!!

Hi Guys, I recently purchased a set of XV 125 pannier racks from Ebay, these are the genuine article, but they have no fitting instructions so i am lost as to how they fix. I think i may have worked out that they bolt through the mudguard and then the pillion seat but if i place them, the holes line up but the indicators are in the way. It seems that in order to use them that the indicators need to be moved. Anyone out there got similar and can light the way? I dont mind moving the indicators to further around the mudguard, but this does mean i will need to extend the wiring as well. My only issue is, i must be missing something!!! Any help would be appreciated.

Hi, Check out page 96 (section 3-20) of the XV250 service manual for the instructions. Regards Dan

Hi, I have the same bike and i get all my parts from the part numbers for the bolts are: 1 x Long one- 98501-06090-00 2 x Short - 98511-06025-00 Give the parts department the part numbers and they can send them out. I have a complete parts list for the XV250 (practically the same bike) if you need a copy Regards Dan

Thanks guys, I adjusted the gear arm and now it seems great. I can get all gears smoothly. Thanks for your help and advice. It is always appreciated.

Hi Guys, I noticed that the clutch cable on my bike was getting a bit old so i decided to replace it with a new one. I have replaced it and adjusted it to the XV 250 manual settings. i.e 3-5mm play on the clutch lever. Can anyone confirm that the position of the clutch mechanisum looks ok? I am assuming that the arrow on the bottom of the arm is supposed to be in line with the gearbox casing. Also can anyone give me some guidance on the lever arm? When you look at the stem from the gearbox it has a mark on it. I again assume that this is to line up with the gap in the gear lever arm? If this is the case then according to the service manual both connections should be at 90 degrees to the main arm. Mine seems to be right if this is the case. According to the manual the height between the top of the foot rest and the top of the gear lever should be within 30-36mm. Mine seems to be at around 20mm. This would mean that i would need to adjust the arm to make the lever go up. Question i would like to ask is, does this fit with everyone else or should i just move the connection to the stem around so the lever is high enough? I hope you guys can help. I do trust the manual but in my lack of experience i value your option more!!!

Hi, I dont have a tacho either but i just give it some revs and the voltage should go up. I guessed at this as the engine idling speed is around 1250 -1350 rpm. So i just guessed at twice the revs. Send me your email and i will send over the service manual to you. I have a XV 125 but other than the engine size the frame and electrical section are exaclty the same. I used the XV250 service manual to fix my bike. it really helps. I'm not sure there ever was an official XV 125 service manual made by Yamaha? Regards Daniel

Hi Tom, Do you have a copy of the XV 250 service manual. If not email me and i will send a copy over. On page 251 it shows how to test the charging system. I test mine with a simple multimeter, Set multimeter to DC20V and then rev the bike to 5,000, the multimeter should show 14-15V if the charging unit is working ok. Regards Dan

Hi Guys, I have recently had problems with my XV 125 and through the help of this forum and a lot of testing with a multimeter i have finally solved my issue. Turns out that the CDI unit was faulty and i have repaired it now and i thought it would be a good idea to get it up on the forum for future use. The problem i had was that only 1 cylinder was firing. I only had the front cylinder firing on my bike. I did the usual, checked plugs, checked coils and all seemed ok. So from there i worked from the Iginition electrical diagram If you look on the diagram the command to fire comes from a number of factors: A = Primary pick up coil B = Battery C = Side Stand Switch E = Main ignition switch Now remember my bike was only firing on 1 cylinder. So from the diagram i could tell that the side switch was working ok, igintion was fine and the bike only has 1 pick up coil, so if the CDI unit was getting the message to fire then both cylinders should get it. My rear cylinder was not firing so from the tracing of wiring using the XV 250 service manual i was able to work out the key for each of the connectors for the CDI unit. Now the front cylinder is fed via the orange wire and the grey feeds the rear cylinder. Just to check i swapped the orange and grey wires on the coils and then it begain to fire. So i knew that the CDI unit was not sending the fire signal to the second coil via the grey wire. Time to open up the CDI unit!!! Now opening the unit is not an easy task, the whole board slides into the case and is glued in place during manufacture. So getting this out was not easy but with some (convincing!!) it finally came out. I now have the CDI circuit board out of the case. As you can see there is not a lot of components to a CDI unit. (which begs the question why does Yamaha want £450 for a new one!!!) In the electrical diagram components J and K are the power transisters that send the charge to the coils. With a short electrical test on these transisters i found that one was not working. In the picture the left hand transister feeds the orange (front) coil and the right hand one feeds the Grey (rear) coil. It was the right hand transister that was not working. This unit as a 2SD2141 Avalance Diode. See datasheet http://www.classiccmp.org/rtellason/transdata/2sd2141.pdf This diode is the ignitor, driver for the circuit. So i needed to replace this unit. I managed to find one from a company in Surrey called littlediode.com http://www.littlediode.com/components/search.php?mode=search&simple_search=Y&posted_data%5Bby_title%5D=Y&posted_data%5Bby_shortdescr%5D=Y&posted_data%5Bby_fulldescr%5D=Y&posted_data%5Bby_sku%5D=Y&posted_data%5Bincluding%5D=all&substring=2SD2141&search_redirect=Y This cost £6.99 with additional £3.00 for first class postage. Soldered the new unit in, tested and then put the unit back together again. (did have to removed glue from circuit board on edge and from case) Got it back together, put back on the bike and hooray!!!!!! Now have bike firing on both cylinders!!!! So my advice is, before you think about replacing your CDI / TCI unit, take a look inside. You never know you maybe able to fix it!!! Some websites i found refer to the unit as a TCI and some as a CDI. For more info on this check out this great website http://www.jetav8r.com/Vision/IgnitionFAQ.html Helped me a lot. My information here is based on my personal experience with the specific problem i had with my bike. Not sure how it may help if you have other symptoms but i thought it would be useful to put up on the forum for future reference. Any questions please let me know. Hope it helps Dan

Hi Kelum, I will post full detail with photos up today as a new topic. Regards Dan

Hi Guys, Update on the bike. Checked the primary coil and cleaned it but the bike was still firing on one cylinder. It was the CDI unit that was faulty, not sending a singal on the grey wire. Opened the CDI unit up and did some checks, turns out one of the Avalanche diodes had died. Ordered a new diode from littlediode.com for £6.99, soldered in an now the bike has sprung into life!!!!!!!! So CDI fixed and bike running sweet!!!! Thanks for all your help.