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Showing results for tags 'yz'.
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Hello all this is my first time using this site so not sure if this thread is in the correct place or not. So I have a mint condition 2014 yz250f that starts 1-2 kicks and runs flawlessly, except lately it has been losing power and bogging down after a few hours of hard riding. It does not fully die but I have to down shift and it will not regain power until 1st or 2nd gear, usually loosing power in 4th. It does not do it often maybe 1 time throughout the whole day. And this has happened 2 times each on different riding days. I figure maybe my air filter that wasn't fully dry could be causing it? I'm going to install an oem piston next week and also back flush the injector and adjust valves. I appreciate any suggestions, really don't want this bike bogging down when I'm heading toward a jump wide open.
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hello everyone out there name is Luke, I'm new to the forum so hopefully this is in right spot. I own a 2009 yz450f and I just put new Tusk clutch plates and heavy duty springs in it. It shifts between gears nicely and back into neutral pretty good but when I pull the clutch in and slap it into first from neutral it seems to clunk. It's not a real bad clunk, but I don't remember how smooth it was when I first got it and I'm wondering if it's common or normal for it clunk a little bit going from neutral to first? Thank you for your time have a great day peeps!
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I live in northwest Virginia (Charlottesville area) about an hour south of DC, I am not aware of any tracks in the area that are either public (or private but allow people to ride with permission). Does anyone know of any good tracks in my area? - Airborne
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I currently have 05 yz that I just dumped a ton of cash into. I was searching for a set of 06+ forks and I found a titled 13 yz125, the guy say it runs like shit,has a cracked case, needs chain, sprockets and probably a bunch of other shit. My plan was to swap my motor and all the other new parts over to it since my bike doesn't have a title. Is it worth 1500 and a 6 hour round trip?
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So I did a valve shim adjustment on my 2009 YZ250f and followed my service manual and followed a video on YT. I got my clearances in spec and put a new spark plug in as well. I put everything back together and torqued the bolts to spec, as well as following the timing marks. Now the kick starter won't budge, it feels like something is in the way when I push down. I didn't try to force it because I don't want to damage anything. This bike has low hours and has been taken care of. I'd rather fix this myself than take it anywhere so I can learn from it, any help would be appreciated. I can attach images if needed
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Of all the extensive mods we have discussed here, engine swapping into XR or from XR etc., what about a Mini Moto? Will our engine fit? I'm talking about a CR, KX, YZ, SX or RM 80, 85, 100 or even a CRF150R chassis. We seem to be drawn to their forks, but what about the whole enchilada? I do realize even the RB or Expert Big Wheel models don't use the preferred 21/18 combo our 230F does but that could be addressed. -
Hey guys, I know the sign of a bad bearing in your wheel is if it kinda has any play if I'm correct? I replaced my back wheel bearings and didn't worry about the front ones. I know this may just be a suspension problem but when I land from a wheelie or jump it is really stiff. Way more stiff then I've ever felt. It just feels like the wheel is stiff. Any ideas? I've already messed with tire pressure.
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The question is simple. Will plastics off a 2009 yz250f bolt onto a 2006 yz250f?
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Hi need help stiffening the rear shock I want to raise the bike as it sits too low for me, Im 85kg what setting should I do like how many clicks thanks
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I don’t know where to post this cause I just joined this page 10 seconds ago. But I’m interested in buying a 2001 YZ125 off a guy on Facebook. I’ve ask some questions about the bike and the engine hours, at first he said he didn’t know the hours. Then he ask his mate and he said there is 16-18 on top and 20 on bottom. Too me and my mate that doesn’t add up or make sense, and there are no receipts or old parts so to us that’s abit fishy. He sent me a video of a “cold” start, but he could of started it up before he started to record. Anyway it started first kick with choke on and idled good with choke off. So it sounds alright to me. But the one thing I don’t like is I don’t know the hours. Top end seems to be easy to do but i have know idea about the bottom end and that what scares me. So how would i find out the top and bottom end hours and if there in a good condition and won’t need to be rebuild soon. Any advice/help or anything would be great.
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HI, I HAVE A 94' KDX200. MOTOR HAS PROBLEMS - WHAT ENGINE FITS INTO THE FRAME ? OR WHAT MODS ARE NEEDED TO DO SO
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I've recently bought a brand new 2017 YZ450f and I have troubles starting it. It takes around 3-7 (very hard) kicks to turn it on, even when it's hot. I was expecting a one kick start up, but maybe i'm wrong. I am also 5'9 and kicking so the bike is even more of a pain to kick. I normally ride lower bikes. Are there any methods I should be using? Or is this a normal thing? Thanks for any advice.
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Hey folks, I'm delighted to be back in the YZ 2 stroke forum after a bit of an absence. I used to own a 03 YZ 125 which always regret selling. I currently own a 2011 yz 250f and owned a 03 rm 125 until recently when I sold it to a friend. Only a few weeks later I got the 2 stroke itch and began looking for a 06+ YZ 125, after being blown away by the SSS suspension on the 250f. A few came and went that I missed out on but finally one popped up. Advertised as a 2007 yz 125 (vin checks as a 06) priced at 2500 Euro. The usual BS advertised was on the ad "good tires only one ride, chain and sprockets good etc " Arrived down and found the chain and sprockets absolutely shot, tires were worn, Leaky fork seals(looked like new oil?) rear fender broken few bits and pieces. Talked him down to 2200 euro and was happy enough with that. Picked it up on friday on my way home from college and started ripping it apart. And that's where things go down hill Found the air filter in a shocking state (see pics) which caused a major groan.... still at least its a 2 stroke. From looking in the exhaust and intake ports I could still see crosshatching very clearly, unfortunately I didn't have time to rip the cylinder off yet. Counter shaft seal appears to be weeping so that will get replaced, also isn't there an issue with 06 shift stopper or something? It does have unbreakable levers which is one of the few plus's All of the bearings will be inspected and replaced if necessary, new top end most likely, new bars, grips, tires, fork seals, chain and sprockets, air filter, restyle plastics more than likely and whatever else I uncover Keep in mind this will be a slow build as I'm in college 5 days a week. Now some pics
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Have a project bike I am building up and it is a fresh start. I ride trails and love 4 strokes. But I got a yz250 at an insane deal. I know 2 strokes have MASSIVE amounts of upper power in the engines. I want the bike to stay on the front wheel and put power to the ground to get up hillclimbs, etc and when i get on it in the trails. I need some suggestions to basically "tame" it down. My plans so far: - 12oz flywheel weight - Oversized tank - Oversized radiators - 18" rear wheel - Electric Start kit\ - Full FMF Fatty/Powercore 2 - Also plan to powder coat the frame, swingarm, subframe black and wheel black/yz blue hubs. 2016 plastics kit.
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Hey! I'm relatively new to the Moses Lake area and pretty new to riding. I have an 09 YZ450F and looking for friends to ride with since I know no one around here. Riding alone is fun and all, but we all know riding with someone else is so much better! I don't mind traveling around and riding new trails, almost prefer it! Any y'all riding around Moses Lake/Spokane/Tri Cities areas?
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Hey guys I pretty much have it narrowed down that I want the yz 250f now I was thinking about Just getting one of Craigslist but in the long run if you take out a loan u might only be paying 20$ mor a month for a new one out of the dealership, I was gonna go for the 2016 Yz250f the list price is about 6300 how much could I actually negotiate realistically. Thank you -
Hello, I went to start my 2019 yz 250f today (electric start) today and the bike did not start or even try to i rode the bike on sunday and it was perfectly fine so i am not sure what the issue is and im wondering if anyone has any fixes. i started the bike (popstart) and went onto the yamaha app and it showed the battery was going from 14v to 13 to 12 back to 14 but once the bike is shut off the battery wont even crank. any info will help thanks.
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I have a 2008 YZ450F with a stock header pipe and Pro Circuit T-4 Slip-On Exhaust. I'm 99% sure the slip on is shot because its loud as hell and when I take it off and shake it it rattles. I would repack it but the screws are all stripped ect. Anyways I've gone over the carb multiple times and I've got it running pretty well. The only issue I have with the bike is that it sputters and pops around 1/2 throttle when I hold it there. When I give it full throttle from any RPM it runs great or when I give it about 3/4 throttle it spins up like a top to redline. Initially the popping and sputtering was way worse I made the situation better by moving the pilot jet up in a few sizes from a 45 (stock) to a 62. The issue has gotten way better since then but I'm not super sure what to do from here. Should I keep moving my pilot jet up in size because that's a pretty large jump right? I tried changing my needle clip position but that didn't help much if anything it just made starting it worse and little to no impact on the ride. Any input on this would be helpful. I don't want to buy other slip on. Also as for the rest of the carb I'm very sure everything else in it is what it needs to be at. I've replaced all the gaskets and O-rings cleaned all the jets, valve holes ect. fixed the accelerator pump timing. I just thinks its strange that my pilot jet size is going so far from the stock 45, but all symptoms point to the bike running lean.
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I can't seem to get the swing arm bolt out I need help
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My buddy has a 2001 wr250f that bogs a little when you punch the throttle. Upon tearing down the carb we found that the AP nozzle was completely plugged off. Tried to clean it but to no avail, ended up using a little drill bit to clear it out. Long story short I need to buy a new AP nozzle but the part doesn’t seem to exist. doesn’t show up in any parts diagrams and can’t seem to find it anywhere. If someone could find one that would be great!
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I was about to install a water pump rebuild kit and when I removed the cover, the governor went to pieces and realized that the dowel pin wasn’t there. What’s the cause for this? What symptoms are there for when this happens? Bike been bogging down in first gear if you try to give it full throttle could this be a reason? -
Hey guys, in need of some advice here. So after a few years of not owning a bike (to pay for college) I bought a 2001 YZ250 from a buddy of mine for cheap because he blew it up and didn’t care to fix it because he just bought a new ktm. So we both figured it was just the top end, but after tearing it apart I found that a bolt from somewhere fell inside the engine and just destroyed everything. It looks like around an m6x30ish philips head bolt, and I have no idea where it came from, so that’s my first question. And secondly, it blew a hole in the bottom of the cases, marred up the crank, piston, cylinder, rod, everything internal. I’ve been on the search for a used complete engine or complete bottom end to start with, and I just want to know what years I should be on the look for that my cdi and wiring harness will work with it. Or say I get a 1999 bottom end, what years of cylinders would bolt up to it, etc. I just need some guidance on what the cheapest way to get this bike back up and running would be because I miss riding, A LOT, and I really want to get back on a bike. Thanks! If you guys want photos of something in particular lmk and I’ll try to get some posted.
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I have a 2006 yz 250f that i bought but it dosn't have all the parts in the valve i need this specific piece on it but there are multiple sizes. Anyone know which size will fit? Everything is oem on it.
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Recently i saw a yz 85 for sale for about 450 usd ...the bike has a piston and barrel problem but otherwise is 100% sound mechanically. Would you say its worth buying? NB :its for a first bike i'm 15 and around 5 foot 6 also its a 2011 model
