Dual Sport, Offroad Bikes

Hello, my names Anthony and im new to the forum and am looking forward to becoming a contributing member. I just bought a 1974 dt175 and have a few questions about it. first is there an oil injection on this bike? the lady at the yamaha store seemed to think there is but I cant find it anywhere. Ive been mixing gas/oil 40:1 i was out riding today with no problems in a parking lot so me and a friend decided to go to a dirt track. my buddy drove around the track a few times and ran out of gas (he didnt turn the valve to on). so we turned the valve to on and restarted. when shifting to first it would jump and stall out on us. it did this maybe 5 times and on the 6th or…

Hi guys if anyone can help me it would be great. I have my mot tomorrow and need to replace my flasher relay with a LED type (to slow the flash rate). And like a twat I've missplaced my Haynes manual, the bike is a 2007. Just the general location would be fine, pics even better. Cheers.

Anybody know of a company that makes telescoping handlebars or knows a way to DIY? What I mean is the ability to adjust the length of the handlebars without having to swap in different bars. If you're wondering why, I like to use my dirt bike for both trails and tracks. Trail bikes tend to have shorter handlebars to make going between trees easier. My bike YZ125 is built for the track. To do it myself I would think if I cut a section out of the center, between the clamps of course, and found a tube sightly larger than the diameter of the handlebars and long enough to fit between the clamps that ought to do it right? So the two separate handlebars would slide …

Hey everyone, So the 77 TY175 has developed a power loss/poor running issue. It starts first kick every time, idles great and will take as much throttle as you want to give it from idle. Once in gear and riding it starts to accelerate normally and then kind of dies out (still running) but just kind of gets sputtery and won't come develop any kind of power or speed from there, if that makes sense. Plug looks decent, am replacing it tonight anyway just in case. Carb has been cleaned and it has new pistion and rings. It was running fine until yesterday. I don't have a compression tester but am shopping for one today. Maybe carboned up exhaust? Crank seal leak? Any advice …

I have an1981 DT100 and am looking for a downsweep pipe. Anyone have one hanging somewhere?

Does anyone have any info on the timeline history on Yamaha trials models? Looks like they started in 1974 and continued through to the mid '80's but I can't find any info after that. Maybe that was it but I'm sure I saw a new Yamaha trials at a bike show in about 1990-91.

Been searching for the correct emulsion tube for this bike and im having no luck. mine is trashed, jet snapped off inside and the part number is all worn away. info on the tube number or where to get it would be great. thanks for your help

Hello all just wanted to know if any one has managed or knows what carbs will fit a dt125r 2005 they have a 26mm standerd but i have been told you can put up to a 34mm- 36mm i have a athena 170 kit also tuned but stan stevenson but got all the bottem end i need but just dont go over 90mph i have a 290 jet in my carb and a k&n filter but still not enough air and fuel mix getting in and i have changed reeds, cranck, flywheel, the powervalve restriction and just every thing you can think off even changed the gearing pleae pm me if you have any info or bits i can use i could make it worth your while! many thanks fraz

hi guys -- i've got an old ct1-175 i've been working on, off-&-on, for a few years with my son. the time has come to pull the cylinder & check its diameter, to see if the cylinder needs boring oversize. if someone could please answer a couple questions about this, i'd appreciate it. 1. i don't have an inside mic nor a regular mic big enough for the cylinder diameter. i do have telescoping gauges and a pretty good mitutoyo vernier caliper. would the caliper work & be precise enough for checking the cylinder? 2. the odometer reads 2145 miles. is that really low mileage for one of these bikes? i've got this hope that, possibly, the cylinder will …

Well I guess I'm back again just chaulk full questions. I'm replacing the clutch side crank seal and not sure how to disconnect the oil line from the clutch side cover to the oil tank. any suggestions gratefully accepted. I got the inner clutch basket retaining bolt off with my impact wrench but not sure how to torque it back on as I don't have the appropriate wrench. on the same note what's the best way to bend the locking plate up to secure the nut? let's hope it runs ok after this. After sitting for a couple of days it starts right up with a fair amount of smoke??? As the pump is disconnected runs for a while and then dies. have a great day/ride Jim 92 F…

awrite chaps i have a dtr 125 05 plate and im looking at changes the tyres as there starting to wear whats the best tyre to go for i have michelin t63 on just now

hello all back again. Airhead has kindly posted me what I hope will sort out the steering bearing issue, so while I've been unable to put the front back together I took the opportunity to put the engine back in, but with mixed success, it fired up after a couple of kicks and I wound the throttle stop until it ticked over nicely but when I pushed the choke in the revs increased then wandered before the engine died, I whipped the plug out and there was a fair amount of oil on it. I have fitted a carb overhaul kit for the right year so Im going to check ive put it all together correctly. Still haven't sorted the auto lube so Im pre mixing at 35 : 1 - is this rig…

just wanted to share a few pic's of the finished project with you. im (quite) chuffed. i think it turned out quite nice. still needs more to get her to 'concourse', but that will be for someone else to do.

im looking for 1989 fzr 750 genisis header pipes. could someone please tell me can i put on any other pipes like fzr600 or fzr1000 . i hurd that most of the fzr's engine's were mostly the same, would this be true . thinks for looking

anyone know the meas for uppers on a 99yz, 2 stroke forks, im wanting to put clipons on it (chop project). thanks in advance. jeep.

Hey everyone! so I have just finished restoring my 1974 dt175. the bike looks and runs perfectly that is until i got back from off- roading. during the ride everything went great but when i started my bike when i got back it was having a really difficult time shifting. when i would shift into first the shifter would stay down. when i shift into second the shifter stays up and io have to put it back in the middle before I can shift into third. I believe it is the shifter return spring. what i want to know is if i need to tear into my engine or if i can access the spring from the outside. any help would be appriciated.

hello i recently bought a dt230(lanza) (4tp) which i will totally rebuild but i need some help.. does anyone have something like a service manual.. wiring diagram.. or parts catalog? any help would be greatly welcome..

Hi all, my engine has been at the shop for about 2 months now (really crap service) think he has had some staff issues anyhow the problem now is that it is bored out to .75 over and it appears they have now discontinued this size, I was hoping to avoid a re bore but unless anyone knows where I can find one this seems my only option to go up to 1mm oversize, I have trawled ebay and spoke to yambits so before I go down the re bore route I thought id see if any of you knowledgeable lot could help out, Thanks

Hello all, Well after too many years, (had a CT1 that was almost new) I just bought a 79 Dt175. Started first kick at sellers house, then died like out of gas, but it had gas ( very old). cleaned carb, replaced gas but no vroom. Tank off checked all connections, battery 6.0V but little or no spark at plug. Metered trigger line to coil and see a pulse when I kick it. On/off switch working. I think the ignition switch kill circuit is in parallel with the on/off switch so I'm assuming him switch works. metered the coil from the common wire to trigger wire, and plug lead and seem ok though I don't know what value range is good. Does anyone have more detail on the…

Hi, I have just bought a 2003 DT125R. Being 6ft5 I think the ride height is a bit low, I've noticed on either side of the back wheel there is a small cog with numbers on and I'm presuming that if I losen the bolt and ajust this it will change the angle of the arm and make it ride higher... Can anyone let me know that I am on the right lines with this??? cheers