Yamaha WR250R Mega Thread

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

  1. Nice_Rumble

    Nice_Rumble Long timer

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    There is a mostly stock '08 in Windsor, CT USA for $3800 BO. It has 2900 miles. It has hand guards, skid plate, new chain/sprockets, extra air filter, Yamalink (not installed), and Dunlop D606's. Buying an unmolested example allows you to keep it all stock or modify it the way you want. From the pictures it looks like he changed the pegs as well. Hopefully he still has the helmet lock and mirrors. Looks like he has bar risers as well.

    With the season wrapping up I'm sure you can negotiate a lower price.

    Reply to: sale-uekpm-2606727389@craigslist.org

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  2. GotMojo?

    GotMojo? Long timer

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    Ya, the more I think about it, the more I'd like to have the GPS stay on most of the time, and will just need to remember to power the thing down at the end of a days ride.
  3. thumpididump

    thumpididump MacGyver

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    Thanks, Rumble.



  4. greer

    greer Long timer

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    How are you going at it? Mine was at 16/96, moving it to 18/97 made a big difference to me.

    Sarah


  5. jgino157

    jgino157 Yer' mom!!!

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    Trying to tap it counterclockwise with whatever I can wedge in there. Doesn't want to budge and I've marked up the plastic housing. It is the black thingy with wires coming out towards the rear of the bike, and held on with security torx bits, right??? Right side right next to the frame.
  6. bhd1223

    bhd1223 Been here awhile

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    Someone who has done this or is about to should take some nice pictures of adjusting. Mine's been off idle jerky since the first time I twisted the throttle. Sadly R² hasn't been ridden in a while as a large pile of dirt is blocking the entrance to the garage it's in while the driveway is being redone. I may have to find it a way out for tomorrow. I'd like to check and adjust the TPS as well if this will remove the jerkiness I've been experiencing. I've read a nice write-up which I believe was linked a few pages back but pictures could be handy. I've yet to see those.

    Also, what's this 15/96, 16/96, and 18/97? The service manual states measuring voltage and it should be between 0.63V and 0.73V.
  7. greer

    greer Long timer

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    It'd be hard to take pictures, the little devil is tucked in tight behing the right frame rail. When you really look you'll see it though, it took me a while.

    jgino--I think you may be tapping the wrong way, you need to tap the right hand side. I used the bluntest end of the biggest punch that would fit in there, I've read of using a screwdriver handle, too.



    Copy&paste of the whole how-to start to finish from HighFive (Thanks HF!) on Advrider back '09:

    Here is the procedure to get your R² Display to show "Diagnostic Mode".

    With the key off, hold down the Select 1 button + Reset button simultaneously. Then, turn on the key and continue holding down these buttons until the Diagnostic Mode is indicated in the display.....as "diag". When you see that, release the buttons.

    To move the "diag" to the TPS (Throttle Position Sensor), simply push those same two buttons again and hold them down until the display changes, then release.

    You should now be looking at the TPS reading. Twist your throttle and see if the numbers change. Go to full throttle position and check the reading. Most stock bikes are set at about 95%....which is probably just fine.

    If you want to change the TPS setting, you need to locate the TPS sensor itself. A small black unit under the tank/seat connection on the right hand side of the engine. Its kind of in front of the airbox, above the fuel injector unit.

    If you want to increase the TPS setting at full throttle, you simply need to rotate the sensor counterclockwise just a little bit. You can do that by tapping on the top-right corner with a smooth round tool (flat punch, etc). Just a little bit of movement gets the job done. BE VERY CAREFUL not to damage the unit. Its very sensitive item. Do NOT go to 100% as that can cause a stuck throttle at Wide Open.

    I've done this adjustment. Mine is set at 98%. Personally, I cannot tell a difference in how the bike runs from this adjustment alone. Maybe a little bit more top-end. But I don't really plan to run around above 100mph indicated, very often. For the record, my fastest run to date is 102 indicated (92 mph on the gps). And that was with Full Loaded Gear on the Winter Dualsport Ride From Hell #2 (recently). Does make me wonder what she'll do without the extra load and drag.....

    When you're all done playing with the TPS &/or "diag" mode, just turn your key off and that will reset your display back to normal.

    HF


    And here's a link to duanew's thread over on WRR:

    http://wr250rforum.forumotion.com/t5568-throttle-on-off-at-idle


    bhd-- go take a good long look at your bike, holler back if you still want pictures and I'll try to help.

    Sarah
  8. bhd1223

    bhd1223 Been here awhile

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    Sarah, is this 98% that HF was talking about the second number of your 18/97? For example, closed throttle is 18% and full throttle is 97%? I also need to find a tach so I can set the idle properly. It seems a bit low but without a tach I just don't know.

    P.S. Thanks for finding and copying that info from HF. That is probably something else worth checking along with the voltage of the sensor.
  9. greer

    greer Long timer

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    I'm supposing that's how it works but honestly I don't have the brains to know for sure. Make a note of your factory setting so you can track your progress. Tap it on the top right; you'll need a hammer and probably have to rap it like you mean business; I tied it with a few love taps at first and it never budged. Rap a time or two and recheck.

    Sarah


  10. duanew1

    duanew1 In my Pajama pants

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    I am glad that some people are benefiting from my suggestion to adjust the TPS. I probably should have taken pictures of it, but I did not want to show off my dirty bike.:lol3

    I had originally used the voltage to the TPS to make the adjustments as I did not know about the diagnostic mode readout. Both measurements should have a correlation.. I would suggest using the diagnostic mode output to make the adjustments as it is probably easier to read than tapping into the wires.
  11. duanew1

    duanew1 In my Pajama pants

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    In my original post I loosened the throttle body clamps and were able to work it loose and move it to the side a little bit. This enabled me to get a security torx bit in there to loosen the screws and adjust it. I really would not suggest mangling the housing of the TPS as it is a little expensive to replace..
  12. Krabill

    Krabill Long timer

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    +1
  13. Pantah

    Pantah Red Sox Nation

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    I didn't want to tap into the headlamp so used two Gerbings harnesses I had laying around. One powers my heated clothing off the battery, and then I tapped into that with another one to power my 60csx up front. Each has it's own fuse.

    All my connections are the pigtail style plugs you find on heated gear. I have a 4 pin Garmin cable with a pigtail that plugs into the harness outlet ziptied to my bars. I pull the plug at night or when I'm off the bike a long time. The GPS battery keeps it powerd up if you don't want to turn the GPS off.

    I ended up using heated glove liners from Powerlet, rather than heated grips. As a result, I have no 'switched' circuits to power anything. Am happy so far.

    I've been wearing the heated glove liners under some medium weight Black Diamond mountaineering gloves. Pretty slick solution. I haven't tried them under my scooter gloves, which is what I normally wear.
  14. jgino157

    jgino157 Yer' mom!!!

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    Ok, one tap in right place and I'm 16/99.......I know I don't want a 100 on the top end, but why did I only jump only one on the low end? Any trick to bumping just the lower number up???
  15. Nice_Rumble

    Nice_Rumble Long timer

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    "6. Now start the bike. At the top left you'll have a digital tachometer. Also, while in this mode no mileage is recorded on the odometer."

    From GSBS: http://www.advrider.com/forums/showpost.php?p=15186125&postcount=19822
  16. Cycle Sector

    Cycle Sector Aka Disco

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    Ive got a X with a SM Pro dirt setup. This thread is huge! Can you guys give me a breakdown of some of the best mods you guys have come up with? Id love to see what else I can do to my bike :wink:

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  17. bhd1223

    bhd1223 Been here awhile

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    How do you guys find this stuff? Is there a way to place sticky notes on pages? Haha. There are so many pages it's tough to find those little bits of info you read that seem handy now.
  18. onetravdown

    onetravdown I can't ride where?

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    Looks like you already have a good start! Best mod you can do.....suspension!!!!!
  19. scottmac

    scottmac Long timer

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    Looks nice - getting rid of the passenger pegs and seat strap would help the MX look.

    Have you removed the XUP motor completely and done the relay? Added a fuel programmer?

    Two things that would help you shave some weight and gain performance.
  20. ArmyJoe

    ArmyJoe Long timer

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    I installed my Yamalink today and did the factory lowering option. Here's the before:

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    Here's the Yamalink:

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    And here's the after:

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