NX250 Thread -- official ADV owners manual

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

  1. fikse

    fikse All-season-rider

    Joined:
    Apr 17, 2012
    Oddometer:
    88
    Location:
    Norway, between lakes and fjords
    I have used 15mm spacers in each. Great success. I have also raised forks 15mm trough the triple clamps. This lowered the bike in front, more wheight on front wheel (and thereby less diving since its already some more "preload"), steeper fork angle. For my taste this is working very nice with my summertyres. With my wintertyres I am not sure, maybe it is a bit too steep for the knobby studded tyres, I will have to test furthermore.


    Only got a few thousands miles on mine since I bought it earlier this year, but already "in love". My first look made me think of the ugly duckling :lol3 Not sexy at all. After some thinking and comparing with other dualsports, this one have it all. Well, most of it. Too soft suspension and tiny brakes compared to new bikes, but still this is just replaceables :clap Now when its snow and ice nad low temps, Im just saying "halleluja" :evil This bike really surprises me. So easy to drive on ice, and engine/drivetrain works just as smooth in these temps as in the summertime. Both thumbs up :clap
  2. HondaNx

    HondaNx Adventurer

    Joined:
    May 28, 2012
    Oddometer:
    16
    Guess its time to post my NX 250
    Here it is guys!!! Enjoy!!
    [​IMG]


    Also i have been having a problem with it. I took it in and got it worked on and thought that might of fixed it. But it still likes to shut off while driving it. But will fire right back up? Dont know if its because the of the sparkplug and its not spaced right?
    Ill check that out. but if you have any input Let me know

    Thanks
  3. CurtW

    CurtW Thumper

    Joined:
    Jun 26, 2009
    Oddometer:
    62
    Location:
    Houston, TX
    I would suspect the CDI. Do you have the shop manual? The tests on pages 17-2 through 17-4 helped me diagnose mine,
  4. larry31

    larry31 Back Roads Explorer

    Joined:
    Mar 24, 2011
    Oddometer:
    356
    Location:
    New Hampshire

    Just in case you don’t have the manual, here’s a pdf version of one. FWIW
    http://www.powers31.info/Honda%20NX250%20Manual.pdf
    <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
    This is the part on checking the CDI.
    http://www.powers31.info/1988_NX250_Ign_Sys.pdf
    <o:p></o:p>
    Here&#8217;s a variety of other info on my NX. If it helps any&#8230;
    http://www.powers31.info/nx250.htm

    Edit: When my CDI failed, it would not start up when I made a roadside stop. After a bit of cooling down it started.
    Again it failed to start first thing in morning, then it did start.
    Finally it failed completely. Only then could I do the resistance tests outlined in the manual to be sure it was the CDI and not another electrical componet. ( Coils, wiring, etc.)
  5. wyowillys46

    wyowillys46 Tooteling my horn trumpet melodiously.

    Joined:
    Oct 10, 2007
    Oddometer:
    2,128
    Location:
    The Front Range somewere
    Very clean! Looks like your tires are mounted backwards.
  6. thirstybuck

    thirstybuck Adventurer

    Joined:
    Jun 14, 2011
    Oddometer:
    82
    Location:
    USA
    I was in the process of putting on a new chain today when I encountered a problem. The countershaft sprocket was loose. As in, I wondered to myself "is this going to come off on its own", not "oh that has a little play in it" kind of loose. I then tried to take it off but without success. Once I took the face plate bolts out I could then push the sprocket and face plate towards the engine and spin the faceplate around 360*. Nevertheless, the face plate and sprocket would NOT come off. So I guess I have two and a half questions:

    1. How much play is there supposed to be in the countershaft? I expect the response to be "a little"
    1b. What do I do if there is "A lot"? Buy a new front sprocket? The teeth are ok by my standards.
    2. How do you get it off?


    TB
  7. scrambler66

    scrambler66 Been here awhile

    Joined:
    Oct 5, 2011
    Oddometer:
    349
    Location:
    Germany

    A “little” play is perfectly normal, even if the engine is new. The extend of “little” is determined by the wear of the countershaft. That’s what a NX250 countershaft looks like after almost 100.000km

    [​IMG]

    The sprocket has worn off quite a bit of material from the countershaft, but it still should be good for a couple of 10.000 kms. If your shaft looks worse than mine, you should consider changing it, in order to avoid something like that in the picture at the bottom :evil. In minor cases it helps changing the fixing plate to reduce the play a bit.
    The fixing plate may be also worn or bended, which makes it hard to get it of – than you have to use some force :wink:
  8. fikse

    fikse All-season-rider

    Joined:
    Apr 17, 2012
    Oddometer:
    88
    Location:
    Norway, between lakes and fjords
    Does anyone know the sizes for wheel ball bearings and sealings, or know where I can find that info?
    In need of replacing rear bearings, considering replacing all 5 wheel bearings when I'm at it :-)
  9. thirstybuck

    thirstybuck Adventurer

    Joined:
    Jun 14, 2011
    Oddometer:
    82
    Location:
    USA
    Scrambler - thanks for the reply and the pictures; that answered a lot of questions. I put the NX back together and rode it to work and back, about 6 miles. The new chain is great and the countershaft didn't

    The countershaft is in good shape. I still think that that is a hell of a lot of lateral play, but I haven't had to deal with countershaft sprocket before. The back and forth play, chain directions, is much better than side to side. Tell me what you think.

    I failed at getting the video to embed so you'll have to settle for the link.

    http://youtu.be/tNeEyZYpMQ4

    <iframe width="420" height="315" src="http://www.youtube-nocookie.com/embed/tNeEyZYpMQ4?rel=0" frameborder="0" allowfullscreen></iframe>
  10. brokeagain

    brokeagain Been here awhile

    Joined:
    Aug 6, 2012
    Oddometer:
    546
    Location:
    SWPA
    I don't know if this is against the rules, but there is a nice NX250 for sale in Western PA. I know the ad says barter, but when I spoke to him he said he'd sell it outright. Not in the cards for me, but maybe for you (yinz) guys.

    http://pittsburgh.craigslist.org/spo/3378800606.html
  11. polarized

    polarized Dirt Virgin

    Joined:
    Apr 16, 2012
    Oddometer:
    23
  12. polarized

    polarized Dirt Virgin

    Joined:
    Apr 16, 2012
    Oddometer:
    23
    Fikse:

    I replaced all my bearings recently. I just ordered off of ebay. All Balls bearings.

    Came with oil seals and all the bearings needed, no problems with install.

    Cheap as well, maybe $30-40USD for front and rear shipped.

    http://www.ebay.com/sch/i.html?_trksid=p2047675.m570.l1313&_nkw=all+balls+nx250&_sacat=0&_from=R40
  13. PTC

    PTC Turd polisher

    Joined:
    Nov 20, 2008
    Oddometer:
    317
    Location:
    masshole mofo
    The sprocket needs changing because it is hooked and worn. The play is fine side to side so long as the splines on the lock plate are not worn. Perfectly normal. Those bumps are "ramps " to help guide the chain on the origin al sprocket. :freaky
  14. thirstybuck

    thirstybuck Adventurer

    Joined:
    Jun 14, 2011
    Oddometer:
    82
    Location:
    USA
  15. thirstybuck

    thirstybuck Adventurer

    Joined:
    Jun 14, 2011
    Oddometer:
    82
    Location:
    USA
    PTC
    Thanks for the feedback. I'm going to order another sprocket. Do they come with the faceplate and bolts?
  16. fiep

    fiep Long timer

    Joined:
    Mar 9, 2005
    Oddometer:
    1,909
    Location:
    GA
    <TABLE style="WIDTH: 503px; HEIGHT: 332px" border=1 cellSpacing=0 cellPadding=0 width=503><TBODY><TR><TD width="70%">Lenkkopflager
    [​IMG] V-05513 Steuerkopflager H 902 R
    </TD><TD> SSH 902 R </TD><TD bgColor=#00ff00 align=right></TD></TR><TR><TD width="70%"> Radlager vorne links
    [​IMG] V-05493 Lager 6202 15-35-11 2ZR
    </TD><TD> 6202 </TD><TD bgColor=#00ff00 align=right></TD></TR><TR><TD width="70%"> Radlager vorne rechts
    [​IMG] V-05493 Lager 6202 15-35-11 2ZR
    </TD><TD> 6202 </TD><TD bgColor=#00ff00 align=right></TD></TR><TR><TD width="70%"> Radlager hinten links
    [​IMG] V-05887 Lager 6203 17-40-12 2RS
    </TD><TD> 6203 </TD><TD bgColor=#00ff00 align=right></TD></TR><TR><TD width="70%"> Radlager hinten rechts
    [​IMG] V-05887 Lager 6203 17-40-12 2RS
    </TD><TD> 6203 </TD><TD bgColor=#00ff00 align=right></TD></TR><TR><TD width="70%"> Radlager Antrieb
    [​IMG] V-06818 Lager 6204 20-47-14 2ZR
    </TD></TR></TBODY></TABLE>
  17. fikse

    fikse All-season-rider

    Joined:
    Apr 17, 2012
    Oddometer:
    88
    Location:
    Norway, between lakes and fjords
    polarized and fiep :
    Thanks alot for helping out here :thumb
    Reason I ask is that I would prefer (bit I do not need to) to shop locally, with brands like SKF, Koyo... I can get bearings for reasonable prices. Maybe it's just me that is not familiar and not trusting brands like All-Balls? :evil
    My simple brain associate All-Balls with a men's only pub or something :huh
    Maybe I should give them a try. After all it's very cheap :1drink (more garage beers).
  18. fikse

    fikse All-season-rider

    Joined:
    Apr 17, 2012
    Oddometer:
    88
    Location:
    Norway, between lakes and fjords
    thirstybuck ;

    On mine (using AFAM sprocket and original (31.000KMs) plate/bolts, the sideway play is considerable, but I belive it is not as much as yours (not big difference though). When I replaced the sprocket, I belive the old one was original, at least it the bike has been serviced by a Honda garage, there was some red silicone-liquid-gasket-like stuff in the gap, so free play was a bit less and "softer". I just removed this and replaced with new sprocket, and could not feel any siginificant difference. I'm not an mecanic (far from), but have replaced some sprockets trough the years, and cannot remember I have seen this much free play on any bike.
  19. scrambler66

    scrambler66 Been here awhile

    Joined:
    Oct 5, 2011
    Oddometer:
    349
    Location:
    Germany

    Hmm, looks normal &#8211; but as I said, the wear of the countershaft is crucial. It&#8217;s kind of hard to tell with the bare eye; before I took the picture I thought there was no wear. Only after zooming the pic I saw that the shaft lost actually some material. Btw, it looks like you got an original sprocket, since that is the only one that got that rubber mounts.

    Honda used that "flexible" mounting of the sprocket on all dirt bikes of that period (dunno about the CRF etc.) and a lot of drivers got puzzled by that. I was told that the side to side play is necessary to counteract torsions of the frame/swingarm for instance during hard landings.

    I heard of some problems with that flexible mounting on the much stronger XRV650 Africa Twin. Many drivers had to buy new countershafts, some of them tried to glue (no kidding) the sprocket to the shaft, but I don&#8217;t know if that is advisable. And there had been many discussions among XRV drivers about the quality of aftermarket sprockets, apparently some are made of harder steel than the shaft (JT), or are not made with the necessary precision (sunstar).

    I don&#8217;t know if that is the case with the NX250, but given the consequences, I would go with the OEM sprocket (plate and bolts are sold separately). And a bit of grease and chain lube from time to time shouldn&#8217;t hurt ;-).
  20. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

    Joined:
    Sep 27, 2010
    Oddometer:
    788
    Location:
    I see Drunk People.
    I know this will sound WRONG to many, but it does work:

    Remove or disconnect battery.

    Remove sprocket.

    Plug in electric arc welder

    Do a very quick bead of weld on the countershaft.

    Cool immediately with water to avoid melting the oil seal.

    Repeat the above two steps until the worn bits are built up.

    Use a dremel, small grinder or needle files to file new splines into the countershaft.

    It's a most effective $2 repair.