The Bar

This bike has been a two year project. Bored to 71mm with a wiesco piston. Boyensen reeds. All new seal and gaskets. Polished the ports and head. Exhaust is clean. K&N air filter. Carb has been gone through. Here is the issue. In order to adjust the idle to maximum speed before adjusting the idle speed screw I have to turn the idle air screw at least three turns out. Has a miss up to about 4,000 and the it cleans up and runs strong. It just seems to be running rich based on the performance and the spark plug. Black sooty carbon. Running an NGK iridium plug. Any suggestions? Thx JR

This just came up for sale around here. Would look good in the collection.

Hello! I'm thinking of ditching the Autolube oil delivery system from my '81 DT250MX/I suspect that the previous owner has already done that for me but I haven't got around to making 100% sure. Basically I'm going for the 'oil in the petrol tank' approach. Does anyone know the oil/fuel ratio for doing this. I've never owned a 2-stroke so I'm used to just sticking it all in the bottom end and being done with it. Cheers.

hi, can anyone offer advice, i have been restoring my DT250MX, started it today for the first time in 10+ years, it been at the back of my garage and i thought it was about time i put it back to it's full glory, after about 10 kicks it fired up, i had previuosly taken the carb off the bike and given it a good clean, the engine ran at 6000 revs and then the revs started to increase so i turned it off, the throttle seems to operate correctly at the handle bar execept that it doesnt release on it's own, help please

A mate has just sent me this picture of a DT400 (1975?) and a friend of his wants to sell it. what do you think these are worth? I recon 2 -3k as its looks a minter.

I have a '72 and a '74 DT 400. This may sound stupid, but I can't figure out how to remove the seats. Can anyone direct me to someplace on line for an exploded view or just tell me how? Thanks. Mike

is it posible to fit a dt400 engine on a dt175 frame if so how much work needs to be done?

how much would i expect to have to pay for a dt400mx in good condition? anyone know where one is? thanks. rapide

Just wonder if anyone knows the measurement for the throttle cable of a dt400mx 1978. It's the cable with the oil pump?

hi can anyone help me i have what i believe to be a dt50mx which i have no documents for and cant find anything about it on the internet does anyone know what year *5m6 076256* was released as i have matching frame and engine but dont have a clue what year it is or if it has been imported i don't have a clue how to find any of this out as im only 16 so would be greatful of any help cheers

Anyone know where I can get a set of the stickers that go on the side in red. Like this: http://www.ebay.co.uk/itm/YAMAHA-DT50MX-1986-LH-SIDE-PANEL-STICKER-FOR-BLUE-BIKE-1RE-2173E-00-00-/121052571597?pt=UK_Motorcycle_Parts&hash=item1c2f4ba7cd

Hi I'm after as many close up pictures of a DT50M as i'm rebuilding one but it's been so many years my memory aint what it used to be (and I can't remember what it used to be) I could do with some close ups of where the front footpegs mount, a close up of the speedo and mounts, headlamp and mounts, infact the more info (written or pics) the better. I know that a lot of TY50 parts are interchangable but if anyone can tell me exactly what parts i'd be grateful You can email me on [email protected] Cheers Dave

my vin number is less then 17 digits so whats the newest it could be and how do i decode it? cheeres

does anyone know where i can find out what year my dt50 mx is from? i searched it in google and i can't find it i found some others which were the uk releases does this mean my has been an import?

Hi all First post Where does a conical air filter fit on? What's the best sprocket set up? And is there anything I can do to the engine? Thanks :-)

Hi y`all, I have been looking about for some exploded diagrams for a DT50mx but hitting a brick wall as no where seems to have them. It would make it so much easier to rebuild so I could work out exactly what I`m missing. Online repair and service manuals also seem a bit thin on the ground - any ideas?

I have just finished restoring a 1982 dt50mx, the problem is I can't get no spark, I've changed the Ignition coil, points, condensor & plug, Iv'e had the source coil rewound, carried out various cont checks, still nothing. The inline diode that goes between the coil and stator has also been replaced. Iv'e conected a 24v test light to to check the output from the stator it seems to be producing current but I think its not enough to generate a spark. I've also tried a stator from a friend bike that I know works, still no spark. The ignition switch and the stop switch have been checked for any short circuits, Iv'e even tried with them dissconnected. Iv'e run …

Hi all, I am new to the forum. Although I don't ride nowadays I have a collection of 80's Jap bikes that I play with. At present I am restoring a 1988 dt50mx for my lad and am wondering if anyone could tell me if it should have round or rectangular indicators ? I think the latter is correct but not 100% on this. Many thanks.

Hi my name is Harvey, i am currently restoring a 1987 DT50MX to as close as factory as possible in time for my 16th to ride. while doing this it needs a respray of the tank and plastics, I was wondering what the original blue colour is called. I have herd that "Peacock Blue" is close but after looking at other peoples blue DT50MX's they all seem to be a different colour so if anyone knows please help me with this your help will be much appreciated. Thanks Harvey

Where should I look for cheap parts for a DT50MX?