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Found 438 results

  1. Can i run to the same problem !?? I was watching these type of videos about Motocross Blow up and wondering why this happen ? is it related to the maintenance or just can happen by chance !?
  2. So i just rebuild my top end of my 2005 250F, i had 35 houres on my piston and cylinder so i decided to rebuild it. it ran perfectly before the rebuild, my timing is right, i have spark, en my sparkplug is a little wet so i have fuel... If i try to kick it it starts to run but after 2seconds it stops running. does anyone know what i have to do? thx Medard from belgium
  3. Charmlessgamer

    yamaha dt125 dirt bike project?

    I saw a motorbike online that I liked the look of...It was a Yamaha DT125 MK2 with racing reeds, handguards, ect (picture below). I am thinking about doing something similar to take around a dirt track. There aren't many, but there are a few cheap DT125's in my area. I am also on a very small budget so this may be an on going project over the next few months or so, depending on how cheap I can get the bike for. The bike will only be used every 2/3 weeks when I take it to a dirt track, so I don't want to do too much to it, or spend too much money any way. What are your thoughts on this project? Do you think I should go ahead and do it? I am roughly 5' 11" but only 110 lbs, so do you think this bike would be too big, or too heavy for me? I just liked the idea of turning a road legal bike in to a trail type bike! Thanks
  4. Hi , I'm new here and I just purchased a spoke tourque wrench kit "Excel (TWS-210ANS) 7-Piece Adjustable Spoke Torque Wrench Set" for my 2008 Yamaha YZF450, the front spokes are smaller than the 6 that came with the bike and the rear spokes are larger than the 7 that came with the bike (I bought it New) Does any one know what sizes the front and rear spoke nipples are? I can still stop my order and seek the correct size somewhere. I find it lame that they gave me the wrong spoke wrench. Thanks in advance, Brent
  5. I got a new to me 2001 yz 250 which has a healthy motor and jetted properly for my elevation. The problem I'm having is when I'm in gear riding and push in the clutch the rpms don't drop to idle but if I give it gas it doesn't slip and revs freely. I can start the bike in gear fine and looked at my clutch already which has plenty of life left and my clutch basket is in good condition to. I adjusted my clutch freeplay which was already in spec. It has aftermarket clutch lever and I maxed it out as far as it can go outwards but the rpms still wont drop to idle when im trying to coast in gear. Another weird thing is if I'm stopped in gear with clutch pulled in it is at idle speed. Any suggestions is appreciated because I don't know what else to check.
  6. tmeyer37

    Racing the Rain

    Fun solo ride before the recent Northern Cali storm, lots of fun good conditions
  7. Do an average rider feel any difference riding a 2014 vs 2015 !? is there any big plus buying 2015 or even 2016 model compare to 2014!? I had sold my 2011 yz450f , and tried couple of other manufacture bikes, but at the end i am getting back to YZ . now i need some advice from experts : i have 2 option : either buying a 2014 around 2900SEK(3600$) or a 2015 yz450f for 34000SEK(4200$) . should i go for 2015 or just save money by buying 2014 model !?
  8. DirtRider250x

    05 YZ125 Gearing

    Picked up a 05 yz125 recently and I have noticed it accelerates quite hard but maxes out quickly. It has 13/50 gearing and I was wondering how much of a difference going to either a 13/48 or 14/50 would make, could go possibly taller gearing. Cheers
  9. I have a 2002 yz85 and when you start it up, it will idle really low then once you rev it up a little, it will start to idle normally but then after a couple seconds it just drops back down to a really low idle like its about to stall out. What could be causing this? After doing some research it sounds like it might be a crank seal leak, but i really hope not. Could it be anything else causing this? And if it is a crank seal leak, would it require splitting cases to replace? I also just cleaned out the carb and put fresh 32:1 in it.
  10. Eric Andrew Charles

    How does this bike Sound!!?

    https://www.youtube.com/watch?v=pfIu-RXWiV0 Please tell me how you think this bike sounds? 96hours on it
  11. Should I buy a 2002 YZ426f OR a 2009 CRF250R? The YZ has alot of extras and looks to be in pretty good shape, the owner used it alot, but took care of it. The CRF is in EXCELLENT condition and looks great Both bikes are for sale at about $1500, but i should be able to talk it down a bit I'm having a difficult time deciding between the two, I'd be sacrificing power for age and vice versa, idk any insight would be helpful. Thanks
  12. 2008 crf250r, in the process of finishing up a top end rebuild, and after installing the timing chain onto the cam I deciding to hand crank the engine slowly with the kickstart to see if everything was alright. There is a distinct knock that sounds like it is coming from somewhere in the cylinder each time I turn the engine over. What would be causing this sound?
  13. Hey guys, so recently I've noticed that my front pro circuit suspension is stiffer than hell. So I read on it and it said that sometimes it's because the front wheel is misaligned and the forks will not sit right. So I put the bike on a stand bled the suspension and got the axle nut loose and the pinch bolts, and every body said to push the suspension down or even press the brakes a few times to help align the wheel. I made sure to tighten the axle then tightened the pinch bolts. But when I tried to push the suspension down while everything was loose it barely moves at all because it's so stiff. I even tried putting the bike on the stand and turning the clickers counter clockwise to soften them up but they were out of adjustment. What do I Do? How do you guys realign the wheel? I've got a riding trip coming up soon and need as much help as I can get. I'll try to add a link to video I found of a bike doing the same thing.
  14. Hey everyone! I went out to the desert last weekend and decided to record it. We rode mostly tight sand washes. Check it out! PS Turn up the resolution and the cameras were faced too far down but I tried to make it work
  15. Hi all, I have a question that i haven't found some clear cut info about. Id just like to hear it from the community.... my mate and i are honda CRF boys , and sadly when we were recently on an out ride in the South African landscape, his engine came to a halt & seizure! what a day it was getting the bloody thing back to the car! Anyway we are young adults at uni who dont really have a lot of mony spare! we managed to find a way to rapidly replace the bike and to save money. We found a running 2004 yama yz250 2t and the guy traded us a seized 2005 crf250 for this- he specialized in chop shopping Honda and obviously saw value in this trade. it obviously came with its quirks.... this yz250 has: -1998 yz 250 motor -CDI from an 80cc yz When we first took the bike to the track it would not start. I noticed the following: -small holes in the expansion chamber (a few, none bigger than the tip on an Aux jack)- what is the impact of these small holes on the bike? ( i will use fire-gum to fix) -muffler does not tightly fit to the end of expansion chamber. FYI, fuel mix was 50:1- recommended by the oil we used- i have been told that old Yamaha are better with more oil? 25:1? So leading up to my question: when we eventually got the bike started (Bump start) it really ran lumpy, and bogged when the accelerator was pulled and eventually died. when i get the chance to look at the bike, what is the impact of holes in an expansion chamber?- could this be a reason for starting and power issue and bogging under acceleration?? Could this be because of a CDI from an 80cc? Could this be Fuel Mix? Spark Plug? apart from those questions, i am going to change the spark plug anyway- i can assume that maybe this could be due to a faulty plug?- maybe?? anyway, this is what i know. perhaps you guys would be able to add to my theories or tell me something more that i could investigate? thanks, Luke
  16. 2009 YZF250 - Ex Dixon bike with the wet sump conversion. Stuck a bunch of quality hours on this thing the other weekend doing some enduro practice. Didn't skip a beat! Changed out the oil and filter, putoline - 850ml with filter change as recommended by someone off the dixon facebook page. Fresh airfilter. Didn't start it for a few days after the oil change as was late at night after service, warmed it up at trackside this weekend with no issues to get the oil flowing, checked pressure by removing the bolt, all fine... Killed it. Came back to the bike about 15 mins later started fine, rode literally about 100m (wasn't hanging around but not going mad) and she just died under load, instant death. I believe it locked up, hard to recall. Didn't feel right either-way, i've had bikes flame out on me (CRF450) and this was a bit different. Bike started OK afterwards, I sat there with it on idle for about 10 seconds, all good, gave it some throttle and it just came to an abrupt stop again, almost made a squeak when it stopped. Rolled back to pits, checked oil filter, was fully soaked, everything looked fine, rads weren't exactly hot but i'd only been riding for a short period, head was pretty hot to touch, crank didn't seem that hot - but then again i've never touched an engine after 4 minutes of running so I've no idea what sort of temp it should be haha. Bike started again fine after little inspection, idled OK. Sounded sweet, no rattles or bangs. Started to give it some throttle, rolling the revs and it just came to a screeching stop again. Kicked it in anger and it hasn't started again since. Gave it a little strip down last night, took valve cover off, all looks normal, valves are in spec still, took the carb off and had a look down the inlet, small little bits of something foreign in there and the tiniest of metal slivers sitting ontop of one of the valves. (By this point i'd already dropped oil and filter for inspection, nothing that looked out of place) Now the bike kicks over OK. Its never had the strongest of compression on kick, but its been a while since i've had a 250F. it does 'get hard' at certain points but its pretty easy to kick through these hard points normally just body weight will do it. Can any of you advise on moving forwards, i'm going to remove head and cylinder for inspection but i've never dug this deep into an engine before haha! Any thoughts or tips on things to look out for? Bike has a spark I should add, not that this really felt like a lack of ignition.
  17. Zachhanus2

    WHAT bike

    Hey guys I was wondering what bike I should get I havnt rode since I was in 7th grade but I had a kx 85 so I was experienced with riding I could pin the bike on tracks so I'm not completely new to riding now I'm 6,2 190 I was contemplating what bike to get, should I go with a yz 125 or should I go with a yzf450, I would never sell the 450 prob have it forever thank you tell me your opinions plz!!
  18. In your opinion, which Factory Team would you race for? -Suzuki -Honda -Kawasaki -Yamaha -Husqvarna -KTM -Also, 2 stroke or 4 stroke?
  19. Mxridder

    2006 yz250 question

    Hi, I just found a great deal for an 06 yz 250 online, and was just wondering, if I'm about 5'10, how would I fit the bike?? I was wondering if I could get two feet on the ground, control it well and stuff like that. Thanks for reading!!
  20. Rowan Green

    91 octane

    So I have a 2013 Yamaha yz450f and I am wondering if I can run 91 octane I live on a farm and we have 91 octane here to get any higher I have to drive 23km one way. It's stock and has 12.5:1 compression
  21. Zachhanus2

    Yz 125 or yz 250

    Hey sick kunts! I was wondering for any advice on what bike I should get, I'm going to get back into riding. I'm going to purchase a bike of Craigslist, one that is relativly decent. I'm 20 years old and I'm 6,2 190 I was wondering if I should go with a yz 125 or yz 250, I havnt rode since 9th grade when we had to sell my bike before moving to pa but the last bike I rode was a kx85. Thanks
  22. AnimalMother85

    Another bike build thread

    This is the saga of my poorly maintained 2003 YZ250 that I bought about a year ago. I added a few mods last summer to help me get by then deployed to Africa for 6 months. The poor bike was riddled with SAE hardware, spray foam where there should have been gaskets, and ziptied rear fender, a horribly cut seat, and plenty of other unspeakable things. However, it came with a title and the engine did run pretty strong at the time...even though it had a hint of engine noise. Over time, the noise progressed and I knew what had to be done. While I was away, I coerced my wife into sending a used crankshaft i bought out to Mr. Crankshaft so I'd have a spare for a quick swap... This is it after I replaced the fuel tank that had a split in it and put a lectron carb on. It still wasn't that smooth and the wheel/tire combination were unforgiving, plus, the suspension and rebound were set for a wanna-be-freestyle MX rider. This is the transition to where it was before I really dove in GT216AA Front with Nitro Mousse 18" Rear with Shinko 505 Cheater rear and Nitro Mousse Low Enduro bend Flexx bars (eventually putting steering dampener on) SSS Forks and suspension done by W.E.R. DEP Armored Enduro Pipe Steahly 9oz Flywheel Weight Devol Skidplate IMS/Zipty tank Non-cracked white rear fender Tall seat...I forget who made it, but it does what it do and fits well. Head cut by 218 (head was cut after this photo was taken) rock kickstand During this ride, I had next to no bottom end due to a stuck powervalve. This was my first ride since I came home. I never really tore into the engine, so I got in there, cleaned it up and replaced a broken powervalve pulley and a few areas where parts were missing from the previous owner(s). Two weeks after this picture, I took it out to the mountains for the fourth of july and it started to get real nasty sounding and not in a good way This is why: While I was in there, I figured I'd send the top end out to Eric Gorr...and since that has a 2.5 week lead time, I might as well get the frame in order. Now my bike looks like this. The frame was spray bombed over who knows what, which was over the the original finish. That is being re-mediated. To be continued...
  23. Taylor Robinson

    NEW BIKEEEEEE!!!!!!!!

    Well guys, I officially pulled the trigger!!!! I have been looking for a bike non stop on craigslist for about a year now....I just CANT justify spending 7k on a brand new machine. About 3 months ago I bought a project bike for 500 bucks and realized it was gonna cost way more to fix it than the bake was worth...it was a 2001 Yz125.....so I resold it, didn't lose any money on it, and kept looking....Well last week, I FOUND A GEM THAT I JUST COULDN'T PASS UP!!!!Went and picked this puppy up today for 3,500.00 bucks. 2015 Yz125. Dad bought it for his kid 2 years ago, who rode it for 6 months around his neighborhood, broke his wrist, and then never touched it again. Has about 40-50 hours on it I was told. What do you guys think??????
  24. Twowheeladdiction

    Yama-wow!

  25. Ok guys, new to the forum and wondering if anyone has some tips for my bike. 02 yz 125 stock bore . bike used to foul plugs all the time no matter in trails or riding hard on the track. fixed that with a friend we took the carb apart and re jetted cleaned etc. bike started bogging and cutting out a lot but plugs were always great color. he suggested float height was off so he fixed that and the bike was running great . about 10 rides since the fix with it running good , but went ou today and 2 seconds into riding bike stalled . wouldn't start checked plug it was perfect color put a new one in and stared right up but kept bogging and stalling all the time . checked plug multiple times and it was good. always riding hard even in trails or would be in 4th on the track and would just bog out. breaks up sometimes in high RPM too. Anyone have any ideas just sick of it at this point . all help is very appreciated thanks.
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