Yamaha WR250R Mega Thread

Discussion in 'Thumpers' started by Sock Monkey, Apr 7, 2008.

  1. ecarnell

    ecarnell Been here awhile

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    Didn't do a write up - but followed one from wr250r forum.
    I'm running a 7" standard h4 - so plug and play and no hid to worry about.
    Took about an evening to drill out the bolts for the brackets - though went pretty well.
    I'm running a 80/100 now - and did a 800km 18hr "race" - plenty of early morning (4:14am) till dark (10:08pm) riding - and never would I have really wanted/needed anymore light.

    [​IMG]

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  2. Mikef5000

    Mikef5000 Long timer

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    If I could afford it, I'd go with the Baja Designs Squadron setup with an AdvMonster rotary dimmer for high/low function (http://stores.intuitwebsites.com/hstrial-QualiRegResou/-strse-47/Rotary-LED-Dimmer-with/Detail.bok).
  3. what broke now

    what broke now Petroleum Brother

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    "disassembled to see if I can tell if the motor in my pump is 'good' or 'bad'."

    But you mentioned the other site: here is a quote from someone on there that did that: " Anyway . . . to sum up . . . it's a royal pita to take it apart and you'll most likely wind up cracking something in the process." Not to say that would be the outcome in your case...

    I wonder if somebody has adapted the pump base to serve a proven, reliable, submersible pump with a long track record that would do the job. Might not be worth the effort, but then again? Short of carrying a spare along on each ride, the notion of rolling the thing out of the woods i was in is not a tempting prospect. It would have taken the three of us all day and ruined that ride, plus possibly my reputation as a guy to ride with. Yamaha doesn't appear to have taken this seriously.
  4. OLEARY

    OLEARY Enlightened Voyager

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    I had a similar experience last weekend. More than half a tank of fuel, temperature was about 105F. Rode most of the day with no problem. Late in the afternoon it started to cut out like it was starved for fuel, similar to your experience. If I stopped and let it sit for a while it would run fine for about 45 minutes and then it would start to cut out again. This is the original pump and I have about 30,000 miles on an 08 bike. I replaced it with a new Yamaha replacement a year ago when I was going for a long trip and ran the new pump for about 5000 miles. I put the old pump back in when I had some hesitation with the new pump. I have I have a 14 liter Safari tank and I have had suspicions that water might collect in the wings from bad fuel but I really think this last episode was heat related. It was almost like the pump was overheating and once it cooled off it worked fine. This is all total conjecture on my part but that is what it acted like. :norton
  5. freetors

    freetors Been here awhile

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    Hey guys I'm having a real bad problem with my chain flailing wildly from side to side. It starts doing this from about 45 mph and up but somewhat intermittently. Throttle position seems to have an effect too. It makes the bike feel like one of my wheels is badly out of true. The vibration is causing my headlight shroud, instruments, and mirrors to jiggle side to side rapidly. This side to side play is causing the rear chain guide to wear very rapidly (down to the metal on one side).

    I put on a new chain and sprocket set about 2-3000 miles ago and this problem has just shown up within the last 500 miles or so and it's getting worse. I'm running 14/49 with a renthal sprocket on front and a steel JT on the back with a lower end RK chain with clip master link. The clip is on tight and installed correctly. I've tightened up the chain as much as I dare, about .5" play with the swingarm pivot, axle, and countershaft aligned.

    Anybody ever have this annoying problem before?

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  6. bhd1223

    bhd1223 Been here awhile

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    Just something that seems plausible, are the sprockets/wheels aligned? Perhaps the rear wheel got knocked out of alignment at some point but not enough to be visibly noticeable. Then the sprocket starts pushing the chain to the sides and begins wearing funny, This misalignment then causes more weird wear on things around it. Just late night speculation on what seems like a simple cause to a recent problem without an obvious cause.
  7. freetors

    freetors Been here awhile

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    Yes, I forgot to mention that I've checked the alignment. The sprockets are perfectly aligned, chain is arrow straight and not stretched. The axle is exactly the same distance from the SA pivot on both sides- this is measured, not using the axle blocks.

    Front sprocket nut is on tight as are the rear sprocket bolts. I even tried shaking the rear wheel thinking maybe one of the wheel bearing possibly died but it's solid too.

    I wish it was something so obvious :cry
  8. The Breeze

    The Breeze Been here awhile

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    I was wondering the same thing......

    Not sure if they differentiate with the part number....but there is definitely a difference (visually) between the two pumps (old vs. new).

    If you go to "basherdesigns" website, he has a tutorial on replacing his fuel pump, and shows a picture of the old vs. new fuel pumps. A portion of the injection molded plastic on the new pump is "black" (majority of plastic is still white), vs. the old pump, in which the molded plastic is 100% white. Hopefully that makes sense....but if not, check out bashers site.
  9. Heoz

    Heoz Adventurer

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    http://wr250rforum.forumotion.com/t6460-new-fuel-pump - 1st post by railbird in the thread. Turns out that the production date is on the box.
  10. jon_l

    jon_l Long timer

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    Good info. Thanks!
  11. markusarealuis

    markusarealuis Been here awhile

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    coming back from San Anotonio Texas.....to Wako Texas :)
    [​IMG]
  12. Starcha007

    Starcha007 Adventurer

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    I rode in 100+ deg weather and stopped at a store. After I came back the bike wouldn't start and you couldn't hear the fuel pump prime. 45 min later the bike would start up. I just had the 3 gal IMS tank installed without heat shielding and thought that was the issue, but it wasn't. After heat shielding the tank it happened again. My bike is a 2011 with 2300 miles on it and out of warranty. My dealer confirmed that the fuel pump was bad. I asked if they could contact Yamaha about the issue which they did. Yamaha agreed to take over the cost of the new fuel pump and labor. Now my question, did they install older pumps in the newer bikes?
  13. xaman

    xaman Been here awhile

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    Hey markus,

    Congrats! I've been watching for an X in Texas and they are hard to come by, good snag!
  14. indypup

    indypup ╭∩╮( º.º )╭∩╮

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    I have an X in Texas and that's why I stay away...lol
  15. skierd

    skierd Wannabe Far-Rider

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  16. Joe Watson

    Joe Watson Long timer

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    Well, it is now official! I have the ugliest bash plate ever made!!!

    [​IMG]
  17. Subaru297

    Subaru297 Been here awhile

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    I have a very similar problem on my KTM 530. On my bike I think it only happens when I am lugging the bike. It seems to smooth out when I downshift or increase rpm's. I really only notice it shifting into 6th and not going fast enough.
    I have a new chain and sprockets to go on as well. I hope that cures it, but based on your experience maybe not. Sprockets are aligned with the motion pro alignment tool.

    Hopefully someone else knows the solution.

    Cheers
  18. jon_l

    jon_l Long timer

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    Details?
  19. Joe Watson

    Joe Watson Long timer

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    It is a bash plate which I made myself out of aluminium that has two tool box sides to it. The pic is taken at the worst angle, so it does look better than that in real life. Um..... not sure what other details you would like to know..... it is big and ugly and will stop me dead if I ever try to hop a log or go through a deep rut......
  20. indypup

    indypup ╭∩╮( º.º )╭∩╮

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    Maybe not the ugliest but probably the biggest. ;) I guess you could put your feet on top and use it as highway pegs too. ;)