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About UK_DT

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    Yamaha DT400E

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  1. UK_DT

    How to get a dating letter

    Look for a sticker on the headstock that will state month and year of manufacture. Make sure that whoever does the dating certificate sees this as if it is close to change over month it might make a difference as to whether it gets a V or W registration number.
  2. UK_DT

    1978 DT400 E No Spark

    Depending on how you intend on using the bike, a 12 volt conversion might be a better (though more expensive) option. There's a thread on how it was done on a 175 here: DT175 12V conversion Or this one on a suitable kit: dt400 12 volt conversion Or a US site that supplies them: hvccycle kit
  3. UK_DT

    Frame number check

    Email Yamaha customer services and they should be able to help: cust.service@yamaha-motor.co.uk
  4. UK_DT

    what year is this bike?

    There might be a label attached around the head stock which gives month and year of manufacture.
  5. UK_DT

    DT400E RPM question

    I think max power is produced at 5,500 rpm and torque at 5,000 rpm, so going beyond that is pretty pointless. It's a large capacity, two-stroke single so is never going to be a 'red-line screamer'. Best change up early and ride the torque.
  6. UK_DT


    Thanks, that's useful to know.
  7. UK_DT


    Will the ethanol also impact on two-strokes? Should super unleaded be used instead of regular on two-strokes?
  8. UK_DT

    Buying an old bike with a NOVA

    Check for a sticker by the headstock, it usually has a date of manufacture. Also Yamaha UK were fine when I enquired on build date for my US DT400E. Just give them the chassis and engine numbers. Don't use VJMC, they dated my bike one year out (I should have sent them a 'One Year Out' T-Shirt !)
  9. UK_DT

    LED indicators not flashing

    Late post, but thought would add it all the same! I used this relay when I added LED indicators to my bike: Electronic flasher relay Only issue I had was that the pins don't tally with the standard relay's socket, so some manual re-configuring was required.
  10. UK_DT

    DT400b 1976

    Great job with that DT400b. My brother had one back in the late 70's in the black and it always was a tasty looking bike. Are you planning on keeping it?
  11. UK_DT

    DT400b 1976

    That looks like a nice job, was it expensive?
  12. UK_DT

    Colour of FS1E

    Try contacting Yamaha customer services (contact@yamaha-motor.co.uk) and provide the frame number. They should be able to confirm the colour the bike was supplied in.
  13. UK_DT

    LED indicators not flashing

    Or it's half a solution. Anyway, trying to add a digital solution to an analogue machine is never going to be entirely straightforward. My solution involves the minimum amount of work to get a usable fix and the downside is minimal compared to the upside of clear, bright, regular flashing indicators whilst waiting at a junction to turn right (or left in other parts of the world). A glance at the left hand switch unit is enough to remind me I've left on the indicator side which doesn't operate the idiot light and saves me having to get out the soldering iron and start messing around with the headlight spaghetti. However, for the sake of completeness, the OP should feel free to follow others suggestions.
  14. UK_DT

    LED indicators not flashing

    I had this problem when I installed LED's to my DT400. The easiest thing to do is remove either the left or right feed connector to the idiot bulb. Granted, the idiot bulb only illuminates when the other side is operated, but I can live with that. Overall it's a good conversion and to have indicators on a 6V machine that actually flash consistently at idle is a welcome change!
  15. UK_DT

    3rd DT175 Restore - 78 model

    LH helicoils are available, but it might be cheaper to get a lever holder off ebay (something like this: http://www.ebay.co.uk/itm/Yamaha-341-82911-00-00-HOLDER-LEVER-1-1973-RD250-1975-DT175-1978-XS1100-1980-XS8-/221020543456?pt=Motorcycles_Parts_Accessories&hash=item3375d9d9e0)