Chain/sprockets problem (?) on 2015 XT 250...noise when dumping the clutch...?
Close
    
    
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
Like Tree5Likes

Thread: Chain/sprockets problem (?) on 2015 XT 250...noise when dumping the clutch...?

  1. #1
    Senior Member kj7687's Avatar
    Join Date
    Jul 2010
    Location
    Southern California - Inland Empire
    Posts
    2,422

    Unhappy Chain/sprockets problem (?) on 2015 XT 250...noise when dumping the clutch...?

    EDIT/UPDATE: Post #9...




    I'm going to try to make this as short as possible (famous last words...).

    *The problem: When I dump the clutch on the XT250 (as in hard launches or clutch wheelies), there is a semi-loud "pop" sort of noise. This only seemed to happen in first gear.

    I kind of thought it might be clutch-related (something hanging up in the clutch pack...it sounded a bit like that). Now I'm pretty sure it has to do with the chain/sprockets/swing arm.

    I tried tightening up the drive chain slack (one click on the adjusters) and that seemed to help a little bit. So then I tightened it one more click on the adjusters (two tighter than how it was). After doing that, I can do very aggressive launches and big clutch wheelies and there is no more clunky sound. Unfortunately, the chain slack is now only about 1.3 inches. The manual calls for about 1.6 to 1.8 inches. I don't think I want to run it that tight. My (weak) hypothesis is that the chain was getting yanked hard by the clutch-dumping, and then whip-lashing into the top of the swing arm as the shock pulsed through it.


    *My solution (??): I think this could have something to do with the fact that I went down one tooth on the front sprocket...so the chain is slightly closer to the top of the swing arm. I'm thinking of trying a couple of different front sprockets to see if that will help. I have a 14 tooth on it now. Stock is 15. I may try that again and/or a 16 tooth. I'm not really sure what else to do. I don't want to just ride it around like that (especially since aggressive clutch abuse is the norm for me - hard enduro use...). I believe this is the same issue that people commonly experience with the Yamaha WR250R - wherein the chain can eventually eat through the chain guard and into the swing arm over time (a bigger front sprocket is the cure). If I want to keep the same gearing, I could go to a 16 front, and then go about 6 teeth up on the back...

    I don't really expect anyone to really offer me a better solution or provide some new insight that I haven't considered... But I'm all ears if anyone does have anything to say. If you've had a similar experience, for example... I guess I'm just kind of venting a little. Thanks.
    Last edited by kj7687; 08-14-2016 at 02:44 PM.
    KJ, just KJ, ok.


    Current rides:
    2004 GMC Sierra 1500, 1999 Toyota 4Runner

    Past rides: 2015 Yamaha XT 250, 1997 Suzuki DR 200, 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee

  2. #2
    Super Moderator JerseyJeeper's Avatar
    Join Date
    Mar 2011
    Location
    NJ Shore / Pine Barrens
    Posts
    3,891
    Your on track. I'd add that if your rear sprocket is fairly worn noise could come from the chain slapping the teethe. With the ajuster loose does the chain slide front and year on the sprocket or is it held tight. Check the swing arm bearings and the lash of the front sprocket, both chain to the sprocket like in the rear and the sprocket to shaft. I've had everyone of those make noise over the years dumping the clutch, usually only in first do to there being more torque.
    kj7687 likes this.
    Husqvarna TE300i Fuel Injected 2-Stroke 2019
    Yamaha XT225 - 1999 Serow
    Yamaha TW200Z - 2010
    Yamaha BW200 Electric Start! - 1986
    Yamaha TTR225R - 2003
    Husqvarna 701 Enduro - 2017
    Kawasaki Prairie 650 - 2002

  3. #3
    Senior Member kj7687's Avatar
    Join Date
    Jul 2010
    Location
    Southern California - Inland Empire
    Posts
    2,422
    Quote Originally Posted by JerseyJeeper View Post
    Your on track. I'd add that if your rear sprocket is fairly worn noise could come from the chain slapping the teethe. With the ajuster loose does the chain slide front and year on the sprocket or is it held tight. Check the swing arm bearings and the lash of the front sprocket, both chain to the sprocket like in the rear and the sprocket to shaft. I've had everyone of those make noise over the years dumping the clutch, usually only in first do to there being more torque.
    That's the sort of feedback I was looking for. Thanks! The chain and sprockets are almost brand new (I believe it was also doing this before I changed them). I didn't specifically look for sprocket-to-shaft freeplay, but I didn't notice any when I was messing around with the chain and sprockets and checking them out. I'll have a look and check for that in particular, though. I really don't think there is any, but just in case, I'll look.
    JerseyJeeper likes this.
    KJ, just KJ, ok.


    Current rides:
    2004 GMC Sierra 1500, 1999 Toyota 4Runner

    Past rides: 2015 Yamaha XT 250, 1997 Suzuki DR 200, 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee

  4. Remove Advertisements
    TW200Forum.com
    Advertisements
     

  5. #4
    Senior Member kj7687's Avatar
    Join Date
    Jul 2010
    Location
    Southern California - Inland Empire
    Posts
    2,422
    I guess I'll start by ordering a 16 tooth. It's only a few bucks and I won't need a new chain to see if that would fix the issue. If it does, I might just leave it that way (from the current 14 tooth); the bike won't really get up hills in second gear now, anyway, and with the taller gearing, I'll have a hair more speed in first gear, and can cruise 10 mph faster on the highway...
    Dryden-Tdub likes this.
    KJ, just KJ, ok.


    Current rides:
    2004 GMC Sierra 1500, 1999 Toyota 4Runner

    Past rides: 2015 Yamaha XT 250, 1997 Suzuki DR 200, 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee

  6. #5
    Super Moderator JerseyJeeper's Avatar
    Join Date
    Mar 2011
    Location
    NJ Shore / Pine Barrens
    Posts
    3,891
    Best of luck. I hate noises.
    Husqvarna TE300i Fuel Injected 2-Stroke 2019
    Yamaha XT225 - 1999 Serow
    Yamaha TW200Z - 2010
    Yamaha BW200 Electric Start! - 1986
    Yamaha TTR225R - 2003
    Husqvarna 701 Enduro - 2017
    Kawasaki Prairie 650 - 2002

  7. #6
    Senior Member kj7687's Avatar
    Join Date
    Jul 2010
    Location
    Southern California - Inland Empire
    Posts
    2,422
    Quote Originally Posted by JerseyJeeper View Post
    Best of luck. I hate noises.

    Me too! and thanks
    KJ, just KJ, ok.


    Current rides:
    2004 GMC Sierra 1500, 1999 Toyota 4Runner

    Past rides: 2015 Yamaha XT 250, 1997 Suzuki DR 200, 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee

  8. #7
    Senior Member jbfla's Avatar
    Join Date
    Jul 2010
    Location
    FL. GA, NC
    Posts
    2,406
    kj, just curious, did you post this on the XT 225/250 Forum?

    jb
    2018 Triumph Street Twin..............2016 CB500F
    2014 XT250 ..................................2008 H-D Softail Deluxe
    2008 SV 650..................................2007 DR 650..

  9. #8
    Senior Member kj7687's Avatar
    Join Date
    Jul 2010
    Location
    Southern California - Inland Empire
    Posts
    2,422
    Quote Originally Posted by jbfla View Post
    kj, just curious, did you post this on the XT 225/250 Forum?

    jb

    I did not. If someone posted about the same issue there, maybe direct them to this thread or something, if you feel like it I am awaiting my sprocket and will report the results of my "experiment".
    Dryden-Tdub likes this.
    KJ, just KJ, ok.


    Current rides:
    2004 GMC Sierra 1500, 1999 Toyota 4Runner

    Past rides: 2015 Yamaha XT 250, 1997 Suzuki DR 200, 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee

  10. #9
    Senior Member kj7687's Avatar
    Join Date
    Jul 2010
    Location
    Southern California - Inland Empire
    Posts
    2,422
    Damn it. 16 tooth front sprocket installed - no change in symptom. Any ideas? I've searched around online a bunch and can't find a damn thing on this issue. I have ideas that I can try/things to look at, but I hate having to mess around so much on a new bike with 5k miles - it's stupid. I have frequently done 8,000 RPM clutch dumps up steep, rocky hills on the DR200 - no problems ever with that clutch, in several years and 20k miles. I just don't get why Yamaha can't make a clutch that's not a POS on these budget bikes. If Suzuki can do it fine at the same price point, what the hell is Yamaha's problem?

    Anyway, rant aside, I'd like to get this fixed. Next things I will check are clutch cable and then the actual clutch assembly...I just don't get how tightening the chain tension (overtight) eliminated the symptoms... Any ideas on the matter would be welcomed.

    The service manual does also say that if the chain touches the chain guide (on the bottom of the swingarm), that that "is the limit" (of the acceptable tension parameters)...the thing is, if you adjust it so it doesn't touch, or just barely touches, it seems to measure lower than the spec, but the noise does go away then...
    Last edited by kj7687; 08-14-2016 at 05:52 PM.
    KJ, just KJ, ok.


    Current rides:
    2004 GMC Sierra 1500, 1999 Toyota 4Runner

    Past rides: 2015 Yamaha XT 250, 1997 Suzuki DR 200, 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee

  11. #10
    Senior Member scotti158's Avatar
    Join Date
    May 2013
    Location
    Groton, NY
    Posts
    2,663
    Does your bike have rubber dampers in the rear hub? Might be worn, cracked, deteriorated, etc. Loose wheel bearings or swing arm bearings/bushings?
    arbolmano likes this.
    2013 Yamaha TW200

    1996 Yamaha TW200

    1995 Kawasaki KLR650

    2002 Yamaha RoadStar 1600 with sidecar

Page 1 of 2 12 LastLast

Sponosred Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. Cam chain noise..?
    By JerseyJeeper in forum Technical Help
    Replies: 10
    Last Post: 05-13-2016, 03:17 PM
  2. PLEASE HELP!!!!! weird noise coming from clutch
    By MOTOMAX on YOUTUBE in forum Technical Help
    Replies: 0
    Last Post: 03-12-2016, 09:36 PM
  3. WEIRD NOISE COMING FROM CLUTCH???????? pls help
    By MOTOMAX on YOUTUBE in forum Technical Help
    Replies: 0
    Last Post: 03-12-2016, 09:18 PM
  4. 2015 Yamaha XT 250 Review!
    By kj7687 in forum Other Bikes
    Replies: 27
    Last Post: 11-21-2015, 02:06 PM

Search tags for this page

chain growl noise

Click on a term to search for related topics.