NX250 Thread -- official ADV owners manual

Discussion in 'Thumpers' started by valvecrusher, Mar 17, 2008.

  1. muddyrabbit

    muddyrabbit Lost Boy

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    My back up plan is a DR350 caliper we have kicking around. It actually slides right on the NX mount bracket, but the DR pads interfere with the NX bracket and the DR bracket is missing materiel to drill a bolt hole.
  2. s3it

    s3it n00b

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  3. PaddyJenks

    PaddyJenks Adventurer

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    I've had the same issue, I thought the bulb was out, ran all sorts of tests, then replaced it and nothing then went to start it and it clicked on for a second. Have to hit the button a few times for the light to stay on. I read somewhere that you can bypass the relay in the starter button but I haven't opened up that can of worms just yet. Maybe when I replace my bars and have to remove all the controls.
  4. ArthDuro

    ArthDuro quarantined

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    I actually like the feature. It is all about sorting out/ cleaning the switch even if you have to get a new one it is an easy fix. Just caused a bigger headache then it should.
  5. muzcuk

    muzcuk Adventurer

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    Hello everybody!

    I have been reading through the thread for a while now. I have recently picked up a nx 250 with clean papers for cheap (considering Turkish standards ~900$) but it is the sorriest little fella that I have seen, including those I have seen in the internet.

    I am trying to put this one together to a proper ds bike for commuting and some fun in the forest. I won't push it like the famous greek guy, I just want the essentials running properly. Pics will come soon but I can't seem to transfer them at the moment.

    Now I am at the point where I fix the electrical system that the previous owner had butchered, so pretty please, can I have that hi-res wiring diagram that ArthDuro has scanned..?

    Thanks a lot.
  6. mattoehler

    mattoehler Largecookie

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    I recently had the same problem, it turned out to be the starter relay switch, it is on the right hand side of the bike near the exhause and has a fuse in it. I replaced that and I was good to go.:clap
  7. mattoehler

    mattoehler Largecookie

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    I should be more specific, I replaced the unit the fuse goes into, which would be the actual relay, not the fuse.
  8. getout

    getout Adventurer

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    Hey all,

    I'm finding conflicting information on Shinko Tires. Can anyone speak from experience on this?


    and

  9. amishmotorscoot

    amishmotorscoot scared fresh daily

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    I had the same glitch with my headlight, someone on this forum, I forget who, advised about the starter switch and its intent, to kill the light while starting, I just dismantled the switch, stretched that tiny spring and it was all good-I like a simple fix!
    On another note: my carburetor has become problematic again- at takeoff it hesitates and sputters, (this is after a long warm-up) if I close the choke and start riding it works fine. My one troubleshooting act was to spray starting fluid on the carb while the choke was open- immediately the hesitation and stutter went away, it revved up and ran very smooth - it didn't seem to matter where I sprayed the starting fluid: on the boot between the carb and engine, on either side of the carb, anyplace I applied the fluid made it run well. So, is my carb full of holes? In need of new gaskets? Thanks for any thoughts or input.
    A closing comment: thanks to all for the very constructive discussion on this forum lately, lots of helpful folks with lots of good info -
  10. amishmotorscoot

    amishmotorscoot scared fresh daily

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  11. mito-nx

    mito-nx Dutch Humor

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    What kind of compression do you guys have?
    I am doing some work on my 1988 MD21 engine and found out that I only have 175PSI.
    When I put some oil on top of the piston I get 205PSI still to low.
    So my piston rings are worn out and the valves do not shut properly.
    But my engine runs great, it has a top speed of 140km/h and has more power than Original.
    Has someone here ever measured there compression?
  12. larry31

    larry31 Back Roads Explorer

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    Amishmotorscoot

    Could it be you have air leaking in the boots going in and out of carb.?

    Try tightening the clamping screws on the boots. Also check the air filter for dirt and blockage.
  13. RollingJ

    RollingJ The mud in your eye

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    There is a high probability I am full of crap about the Shinko 16" rear tire. I thought I had tried the 244 while I still was running the 16" rim, but it was after the swap to a 17" rim.

    You can quote me on that.
  14. Grestil

    Grestil Hurting peoples feelings

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    If I were you, I would repeat this test with wd-40. Starting fluid is highly volatile and vaporizes too quickly for this test. When you apply starting fluid to any part of the intake, it will vaporize very quickly and if there is a vacuum leak close to where you spray it the vapors will be sucked into the intake through the leak making it nearly impossible to pinpoint. Penetrating oil won't vaporize nearly as fast and it is good at "finding" leaks because it will temporarily seal the leak due to its viscosity. Use the little red tube to apply a small amount right where the intake boot mates with the head. Just a little dab will do. In my experience it's almost always the o-ring in the boot and not the boot itself. I am assuming that your boot shows no visible cracking or damage. If there is a leak and it is small, the engine will respond. If the leak is large, the penetrating oil will be injested and burned producing light smoke and funny smells. Keep in mind that the object of this test is to use light oil to temporarily seal the leak, not to provide the engine with another fuel source such as starting fluid.
  15. az2002

    az2002 -

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    13 bar cold engine, 14 bar hot, 15 with oil, 16+-1 in service manual. >67500km
    Common gauges have very poor accuracy, they are for cars engines. If you have no compression at all, it is a problem.
  16. mito-nx

    mito-nx Dutch Humor

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    Those pressures sound okay, But they are all 1bar lower with me.
    But as writen over here I do not know accuracy of the guages and yes I modified one ment for à car.
  17. amishmotorscoot

    amishmotorscoot scared fresh daily

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    Larry31 and Grestil,
    thanks for your feedback, I checked the boot clamps and they are tight, when I removed the air filter (it is a bit grubby) there was no improvement in poor running. I applied WD40 as suggested but there was no change, I then used your suggestion to apply small squirts strategically - I very carefully used the red tube and sprayed tiny amounts of starter fluid to sections of the carb- when applied to the boots there was no change, the only place I sprayed fluid that impacted how it ran was when I applied the fluid to the black cover at the top of the carb - might this indicate a poor gasket seal? Any other place I applied either WD40 or starting fluid caused no change-perhaps a gasket kit is in order?
    Thanks much for pointing me in a productive direction in sorting this out.

    BTW there is a 1989 listed here in Central Oregon,

    http://bend.craigslist.org/mcy/2542527397.html

    regards,
    AMS
  18. amishmotorscoot

    amishmotorscoot scared fresh daily

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    found the carb issue: while poking around, tightening and checking I noticed one of the screws holding the black plastic cover on the top of the carb was loose, after removing the carb from the bike I discovered that the screw was more than loose, the threads in the hole were stripped. I just cleaned, dried and filled the hole with JB Weld and hope drilling and tapping a new set of threads will do the fix -
    anyway - thanks for the troubleshooting helps

    regards,
    AMS
  19. Grestil

    Grestil Hurting peoples feelings

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    I'm glad you found your problem! I have put alot of time in tuning the carb on my NX and I'm only too happy to help others do the same.



    I have heard of this being done but have never tried it myself. Let us know how it works out!
  20. amishmotorscoot

    amishmotorscoot scared fresh daily

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    I have heard of this being done but have never tried it myself. Let us know how it works out![/QUOTE]

    I've never done it either! but on paper it's a sound process - I'm away from the bike for a bit, but when I get back to it and finish the job I'll let you know how it went-