The official XT225 thread!

Discussion in 'Thumpers' started by wickerman777, Nov 4, 2006.

  1. jimroid

    jimroid Long timer

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    I’ll be honest. Marginal picture at best, but my Friday morning ride was one of the finest. So many great views, and trails, and twisty roads. Just no place to pull off to snap pictures. Nor did I want to stop riding! B63B7279-8C31-4F8E-B050-D46059D637CD.jpeg
    Nobade and 8lives like this.
  2. 8lives

    8lives Dharma Bum

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    It's a great time of year to ride, once I have my "new to me" XT checked out I'll be out and about to enjoy.
    norton73 and jimroid like this.
  3. norton73

    norton73 drinkin' in the garage Supporter

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    Let's discuss oil for our bikes....







    Fork oil actually. There's no drain plug on my wife's '04. I'm thinkin' I'll just pull the tubes out of the triple clamps while I am changing the front tire and drain out the top. Recommended weight for a 130 lb rider who's not gonna be hammering single track?
  4. Tom S

    Tom S Can I ride it? Supporter

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    The suspension on these things isn't all that stiff. Why not stick with these stock specs?

    Forks.jpg
    jimroid likes this.
  5. dgjackson40

    dgjackson40 Been here awhile

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    Southeast Missouri USA
    Where should I start looking for my oil leak? It’s a 93 model. FEAE9A4F-E0C9-479F-A513-BE5C5EFD445A.jpeg 2CCB0647-4692-4EBC-9914-189772AD1CBC.jpeg
  6. Aguaski

    Aguaski Been here awhile

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    For sure replace both valve cover o-rings, and replace the o-ring that seals the starter unit to the motor. Those are cheap and easy replacements. Clean it up and see what happens next. You may also have a leak at your base gasket, which is also a cheap fix, but much more involved process.
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  7. dgjackson40

    dgjackson40 Been here awhile

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    Thanks will order seals and gaskets right away.
  8. Tom S

    Tom S Can I ride it? Supporter

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    Start by cleaning off all that oil so you can see where it's coming from.
  9. oughtsix

    oughtsix Reverse Engineer

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    652
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    NELA
    Hit a snag with the rescue bike. Took the tank off to refresh and patch, put it all back together and have running issues.

    Bike starts up quick and idles great after a short warmup. Will rev great sitting in neutral. However, when I put it in gear and try to accelerate, the revs will (for lack of a better term) get "stuck" sputtering about halfway up the rev range and eventually rev on up, like a two stroke hitting the power band. Never fooled with a cv carb in depth, so any ideas?
  10. Tom S

    Tom S Can I ride it? Supporter

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    Seen stuff like that happen when the throttle cable routing gets put in the wrong place & is hanging up on something when you turn the bars & it pulls on the cable.
    You did just put things back together & may be turning the bars when trying to start out so .... :dunno
  11. oughtsix

    oughtsix Reverse Engineer

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    Checked routing and the butterfly moves freely. Slide moves easily. So i tore it down again and put my good eye on it.

    As usual, I'm kind of a bonehead. I had it apart earlier to reset the float level and while i was in there, I cleaned some dirt dauber leavings out of a couple holes, but found myself wondering how in the world you would ever pull a vacuum on the slide diaphragm with this open hole on both parts.... :dizave

    IMG_1700.JPG

    Should have finished that line of thinking. A quick consult with a parts fiche and i can confirm that this is busted. Mikuni calls it the air cutoff valve, or at least the cover. 40 bucks on ebay seems steep, especially with the internals visually in good shape.

    According to this thread:
    http://www.xt225.com/forums/ubbthreads.php?ubb=showflat&Number=74951&page=all

    The vacuum connection (the part that breaks off) is likely not 100% necessary for full function, but sealing the diaphragm top-side is 100% necessary...

    While it is a slippery slope to begin to decide which parts are needed and which are not in the near-magical system that is carburetion...

    it did work great before unplugging...

    and it is already broken....

    and I do have some plastic epoxy on the shelf....


    Stand by.
  12. Tom S

    Tom S Can I ride it? Supporter

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    Also known as the enricher valve. Been plenty of posts about it here & some that are much newer than what you found on the XT225 forum.
    https://advrider.com/f/search/76036622/?q=enricher+valve&t=post&o=relevance&c[thread]=178968

    I'd forget the epoxy, some have said it didn't work out too well for them.
    $27.99 at Rocky Mountain.
    https://www.rockymountainatvmc.com/parts/mikuni-cv-carburetor-side-cover-p?v=2220
    oughtsix likes this.
  13. NC Rick

    NC Rick Cogent Dynamics Inc

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    Turn them upside down, pump out the oil and fill and bleed before setting the oil height. 10wt fork oil or ATF if you want.
  14. NC Rick

    NC Rick Cogent Dynamics Inc

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    I’m brand new to this thread I think... I just acquired a 2004 that wasn’t running. The bike is actually really pretty nice but missing side panels and tank “scoops”. Tires are old with date codes of 2004 and 2006. 8300 miles. Supposedly the valves have been replaced and someone worked on the bike enough to charge around 600 bucks.

    I'm not sure exactly how I’ll use the bike but my daughter can ride it when she wants. As long as I can get it working well, I’ll be reworking the front and rear suspension.
    Nobade and simestd like this.
  15. NC Rick

    NC Rick Cogent Dynamics Inc

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    I’ll try a tire question... my google skills may be failing so I’ll apologize in advance. I’m looking for DOT knobby tires which won’t make the bike taller. It look like that is doable with MT21s which are my fall-back if someone can’t suggest a better option. And experienced comments? Thanks.
  16. NC Rick

    NC Rick Cogent Dynamics Inc

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    I am considering generic number plates.
  17. simestd

    simestd Packet plumber Supporter

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    Anchorage, AK
    We alternate between Shinko 244s and 705 on my daughter's XT225 depending on whether the next few rides are dirt or pavement biased. The bike (and rider) are light enough that tire wear is excellent.
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  18. NC Rick

    NC Rick Cogent Dynamics Inc

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    3.50 or 4.10 rear? That may be the way to go. I’ll personally likely ride it more than her. I was thinking non DOT but that isn’t likely a good idea if the bike ends up on-road.
  19. oughtsix

    oughtsix Reverse Engineer

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    thanks for the link! that’s half the price I found on eBay. Will post back what I wind up doing.
  20. simestd

    simestd Packet plumber Supporter

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    I'll check what we have on currently this afternoon, but IIRC we've tried both 4.10 and 4.60 on the XT225 and ended up preferring the 4.10 because the 4.60 almost had too much surface area for good traction since the bike and rider are so light if that makes sense.
    NC Rick likes this.