Yamaha Workshop

hi there jus wondered if sme one cud help.the bike runs great at tickover.it accelerates ok in first an second gears,but then starts to splutter in third as u reach band.and when u change up again it gets wosrse.until you change downv again.the carbs clean,no water in fuel,valve set right,an plug ok,seems like its rather flooding it or starving of fuel.wud be grateful for any help thks ste

My radian runs really good for about 5 minutes and then just quits.. I have fuel in the bowls and spark, but it will not start back up until it has cooled down...any suggestions??

I've just been given an xs400 that ran "just" a couple of years ago. I cleaned the carbs and installed new carb kits. When I put them on the bike fired right up. However, it is only running on the right cylinder. It runs well enough that I can ride it with no problem, but still I'd like to have use of the whole engine. The left side gets spark, but doesn't run on that side. Any ideas on where to start? Thanks.

Does anyone know if the lights in the dt125r (1988) run off the battery as well as the lighting coil? My lights are working but only when the engine is running. Also is there a quick way to check if the battery is charging? I've measured the voltage across a new (charged) battery fitted to the bike with the engine running and the voltage is 12.3 not between 13.3 and 15.3 stated in the Haynes Manual. This reading does not change when the engine is switched off. Any advice appreciated.

I was traveling home from work today, doing about 65mph, and the oil light came on for about ten seconds and then went away, it did that twice, and didn't after that. I changed the oil less then 2k miles ago, and it doesn't seem to be leaking, and it seems to be running the same as it always has. Has this ever happened to anyone before? Should I just take my bike somewhere and have some diagnostics ran on it? Thanks

Alright, wondered if anyone could help!! just aquired a fz400 and its low on oil, havent got a manual yet and just wanted to check wat oil i shud be using?? cheerz for any help

Hi can anyone help I have bought a yamaha xtz750 1990 with a missfire I have cleaned the carbs and checked the settings as it was running very rich but still missfires.Thought I would check the spark so out came the plugs, whilst cranking the engine over smoke started coming from the regulator/rectifier .Could a faulty reg/rect been the reason for the missfire I only cranked it over for about ten seconds.If I just replace the reg/rect is there any chance this will also burn out, any advice and help would be very much appreciated

Hi, I've recently purchased a DT125R (2 stroke) 2003 and have a couple of questions that i need some help with. 1. There is an oil filler cap by the kickstart and a viewing glass below it. It would appear as there is a line on the engine case next to the glass that it is need of some oil as there is none visable. Can anyone please tell which oil is recommended and if this line is a maximum or minimum. 2. The bike seems to run okay, it was a little rough initally as it had been stood for 12 months. I've let the tank get almost empty and put fresh petrol in, however the bike runs fine up until 7-8K Revs and then seems to loose perofrmance (Still runs but will stru…

Hi you (hopefully very helpful) Yamaha owners! I'm brand new to the forum, and already I have a question. Please bear with me, not only am I technologically challenged, I don't know my carb from my spark plug (but at least I know I only have one of them on my 125) So here's the thing: I've got a lovely little 1996 SR125, goes well most of the time, but she stalls at the most unexpected moments, mainly when I am stopped at traffic lights or braking to a roundabout (most disconcerting!) She also seems to lose power on the dual carriageway, then suddenly sparks up as if someone's put a rocket up her! So I've looked online and have established that other…

Hi i have a tzr125r 4jb and it has no spark i tried looking for a wiring diagram but all i found was one for a 4fl engine.Does anyone have a wiring diagram for a 4jb or any advice.

Hi guys ive just bought a 2006 yamaha dt 125 re and its slow as poo . can any 1 know exactly how to derestrict it and what is needed i plan to put a dep system on the bite and i have heard something about a wire from the spedo needing to be cut and earthed is there any thing else i can do any 1s help would be greatly appreciated cheers guys

how can I make it go faster?

Does anyone have a listing of the codes for a XT125X 2005 that come up on the dash, I've got endr and don't know what it means!! Thanks

I have an rs100 I have set the auto-lube gap to the Manuals speciation as well cleaned and reset the carb and checked everything else. When I run the bike for the first few hours it runs perfectly and the slowly it goes back to the same problem , of poor and delayed acceleration almost as if it is starving for either fuel or oil. When I set it up I have good smoke, when it gets poor I have allot of smoke blowing especially when it’s warmed up. A friend has recommended cutting out the auto-lube system altogether and doing a mix in the tank, is this a good idea and does anybody know what the mix ratio is? Or does anybody know what’s I am doing wrong? Thanks …

Hi I have an 2006 tdr125 that I want to de-restrict, dont have a first clue Have read that getting braided hoses, full exhaust system, fiber reeds and a better spark plug will give a better performance? I have tryed looking for these parts but nowere seems to have them for an '06, any1 no were to get hold of the parts? would it be something i could do or am i going to have to get some 1 else to do it? any help would be gr8 Cheers Vamp

Does anyone have any experience replacing the 87 FJ1200 fuel petcock with anewer cheaper replacement. Also does anyone know of a replacement bolt-up fairing mirror. Thanks

Hi can any one help i have a dtr 125 i bought the bike for off road use stolen and recoved from a salavage yard and was told it is a 1999 tdr 125 now i need a head bore and piston so i need to know how to id if this is the right year or will a head bore and piston from any age fit. Thank you Clint

Hi good people, I'm new here and require some desperate help to remove the rotor from the crankshaft of my sons Tzr 125r a 4DL italian import. As you are all probably aware a workshop manual is rarer than rocking horse shite and all pictures I've seen don't look anything like his. The windings are attached to the outer casing and rotor appears to have the starter sprag clutch bolted to it, I assume after removal of the centre nut the rotor pulls off the tapered shaft. I have a two legged puller but this fails to even look like shifting it. Any help much appreciated. Guess somebody will ask why I'm stripping it well the crankshaft seals are shot and theres some lift in t…

Hi anyone, I've torn down a 1994 yz250 two cycle engine only to find a burned piston and rod bearing. The crank case sections are apart. I need to pull the crank. Do I have to use the Yamaha "screw out the crank tool" or is there another method to remove the crank from the right side? I have another spare crank and rod, so all I have to do is swap. Also, is installation the reverse of removal? Any proven methods to get things moving again, would be appreciated. Many Thanks!

HI, I AM NEW TO THE FORUMS MY QUESTION IS... My XJ 600N SEEMS TO BE RUNNING ON 3 CYLINDERS... SPARK PLUGS ARE NEW AND HAVE BEEN ROTATED SO IT IS NOT THESE, ALSO TRIED ROTATING THE SPARK PLUG CAPS AND STILL RUNS THE SAME. DO YOU THINK ITS THE IGNITION COILS???? THANKS FOR YOUR HELP!