Yamaha WR250R Mega Thread

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

  1. adaycj

    adaycj Been here awhile

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    531
    Yep, bigger and smaller sprockets use more or less chain plus hold it closer or further from the swing arm. That further negates the factory procedure since nearly every WRR eventually gets a sprocket size change. My gage system has to be adjusted both after a sprocket size change, and after a ride height change using the shock threaded clevis. The clevis changes the drop when the arm is all the way down.

    Problem is my 180# ass won't quite level (parallel?) the swingarm. Nothing is simple when you have a machine that is sensitive to chain slack. :cry

    At least these machines don't use the older style "snails'. On my KLX250s the increments were huge. Every chain I bought would wear to a point that was too loose, but tightening it up one indentation was too tight. Of course in 5 years of off road riding that machine never needed a slider. Go figure.
  2. alansz400

    alansz400 Long timer

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    Does anyone know what the brown wire that goes into the ign. switch is for? The dealer that rewireded my heated grips after my wreck used that brown wire to power them and I dont like it. I had a hot wire going to the battery with a fuse. The dealer has my heated grips and my 12 volt power port both wired into that brown wire with no fuse. I am going to rewire it just wanting to know what the brown wire is for?
  3. riverman

    riverman Life is great !

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  4. Scott_PDX

    Scott_PDX Leisure Engineer

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    Location:
    Portland...the newer one on the left side.
    Anybody with the bigger IMS tank run Tank Panniers? Looking to see if there are any clever ways to mount them without being in the way too much. It's unclear to me if there is an attachment point for that tank.
  5. UtahFox

    UtahFox Been here awhile

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    Which tank? The IMS 3 gallon doesn't change the geometry other than it gets an inch or two taller. The same plastics the bike comes with fit for instance.
  6. sodapop

    sodapop Caffeinated

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    I did only the flapper mod and set CO at +2. The bike is noticeably snappier. I liked that so much I'm considering a pipe and programmer.

    Sent from my Nexus 7 using Tapatalk HD
  7. Scott_PDX

    Scott_PDX Leisure Engineer

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    Yeah, I meant the 4.75gal one. It looks "smoother" - not sure if that's a problem adding tank panniers to that tank or not. Tired of hauling a Rotopax with my 3.1 gallon tank on longer rides.
  8. Rapid Dog

    Rapid Dog bikes, booze, broads...

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    I've used my Aerostch panniers with my 3 gal tank no problemo.
    I put the straps forward and aft of the tank filler cap and use the bungies where they'll best work.
    Gotta pick here somewhere...

    Here' tis:

    [​IMG]
    [​IMG]
  9. simmons1

    simmons1 Long timer

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    I have done this for easy rides. Pushes knees out when sitting, but doesn't tend to bother me standing up:

    [​IMG]

    I wouldn't use this on technical trails/single track.
  10. Rapid Dog

    Rapid Dog bikes, booze, broads...

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  11. jon_l

    jon_l Long timer

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  12. Rapid Dog

    Rapid Dog bikes, booze, broads...

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    ...one thing about the Buckin' Roll, there's not a great amount of room in the side pockets. Probably squeeze an MSR bottle in there. They're kinda hard to get gain access due to the hefty design and small space.

    Not near the space and access you'll have with some Aeostich panniers.
  13. pfy50

    pfy50 Professional nOOb

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    He was probably looking to connect to a switched line. The brown line runs to your #55(in fuse panel) 10amp fused power line. It also connects to the starter relay,license plate light,front and rear brake switches, horn. How much power does your heated grip pull?
    IMHO heated items should go thru a relay and switch of their own and not pull load off of any primary circuits for safety. At the very least take the power port off the same line as the heated grips which should have their own 5amp line.
    ps. some useful info on the Hot grips faq pg.
    http://www.hotgrips.com/faq.php#14

  14. skierd

    skierd Wannabe Far-Rider

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    I've run my heated grips off of the headlight circuit (a 15A fuse) for years, never had an issue with my lights or grips. Same way BigDog does his.
  15. alansz400

    alansz400 Long timer

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    Thanks. I rewired it today with a fused wire to the battery. I was going to use a relay but didnt have one. Still upsets me that the dealer would cut into my factory wiring. I guess thats why I dont take my bike to the dealer unless some one else is paying the bill.
  16. pfy50

    pfy50 Professional nOOb

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    Skierd,

    What ever works, it's just a little safer on a lighter loaded circuit as long as the wiring is the same guage.
  17. Attico

    Attico Wrong way 'round

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    I ran mine on an old honda on the running light circuit.

    They don't pull much usually
  18. TexaNate

    TexaNate Been here awhile

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    Hey all,

    First of all, great thread, I'm learning a lot. I've tried searching for this issue but I haven't been able to find the answer, so here goes...

    I bought my '08 WR250R used at 5,000 miles with the EXUP valve removed, airbox mod done and the complete FMF system (header, tailpipe and power programmer). The check engine light was on (continuously) but this didn't worry me since that's what happens when you do those engine mods.

    However, last I rode the light started flashing at a rate of roughly one second per flash. Then it went off entirely. Then it came back on again and went back to flashing.

    It happens in all kinds of situations, on-road and off, at all rev ranges, speeds and throttle levels. I don't know if the fuel pump was replaced but it works fine after nearly 5 years and 5,000 miles (I try not to run it low on gas). Everything else seems to work as it should. The computer throws no error codes, the engine gives plenty of power and the bike is a blast. I've changed the chain recently and after parsing all the competing scholarly sources on setting the slack, I think I have it set OK. Last oil change was 600 miles ago and I clean/swap the air filter every 3-400 miles (more if dirty/dusty). What does a flashing check engine light mean? Should I worry?

    Thanks for any wisdom you might offer!
  19. viper770

    viper770 Been here awhile

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    oh thats a easy fix just find some klx or a drz400 and sacrifice it to the WR god and all will be forgiven and check engine light should go away :evil
  20. shep546

    shep546 Been here awhile

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    Get the code checked? :deal