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 Valve Adjust Procedure for YZ250F/YZ400F/426F/450F
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Posted: 05/29/08
05:37 PM
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I just bought the single shims that i needed. Only cost me 8.75 each.
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pin_it
Addict
| Posts: 2121
| Joined: 01/05
Posted: 05/30/08
11:12 AM
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Guys, these YZ/F's are bullet proof! I keep my bike maintained like you guys do, but with one exception...I hit the rev limiter, and I hit it often! I have over 65 hours on the stock piston, rings and the valves havent moved since the break in adjust I did.
Its safe to say I got my time out of my piston, because im changing it and going to a 13.5:1 Compression piston, but I checked my valves yesterday when I pulled the motor, and guess what?! They haven't moved!
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Posted: 05/30/08
11:15 AM
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Any bites on ur 450f?
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pin_it
Addict
| Posts: 2121
| Joined: 01/05
Posted: 05/30/08
11:20 AM
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Yup! Last night I let a guy who rides a nice 06 YZ250 ride my bike, and I rode his... I asked if he wanted to trade and he said yup! So I should have a YZ250 here in a day or two.
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honda342
New User
| Posts: 1
| Joined: 06/08
Posted: 06/03/08
03:45 PM
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top man, much easier now you've explained.
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Posted: 07/14/08
09:10 PM
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great step by step instructions! it looks just like my bike when it was tore apart.
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Posted: 09/08/08
06:27 PM
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Holy crap pin.. i love you I've been in need of this
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Posted: 12/03/08
03:52 PM
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Pin it,
Assume post man!!!!!!!!! I wonder if I could trouble you for something. I tried to print this post but I can't figure out how. Can you convert to a PDF file and send this post to my email account so that I can save it and/or print it????????? nileslewis@aol.com
Thanks,
Chris
Ride that thing like someone else stole it!!!!!!!!!!!!!! 
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Mmulisha
User
| Posts: 63
| Joined: 12/08
Posted: 12/10/08
07:21 AM
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That was superb, Very nice clear photos and very good description
Also your bike is pretty clean lol
Yz 125 2007
Dep pipe/Dep silencer
One industries kit
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Posted: 01/30/09
08:59 PM
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hey im working on an 03 version of your bike and its not going back together as planned. i read your message and i came across the part that said if i dont take the towers off in a star pattern that they might warp, i didnt take them off in a star pattern so im thinking thats the problem i just want another opinion.
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Posted: 03/20/09
02:26 PM
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Great job, Pin_it. Very well done with great photos. I'm new to the 4-strokes and was a little intimidated to check the valves but once I saw your photos/verbage-easy. Thank you for taking the time to document this. 2-thumbs-up.
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expence
New User
| Posts: 5
| Joined: 06/09
Posted: 06/09/09
10:58 PM
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can some one please tell me the valve clearence specs on a yzf426 so i can at least see if there in spec
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Posted: 06/30/09
07:25 PM
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great job very well done 10 out of 10 with me i will ask you for sure if i have any questins with any engine problems if thats ok and everyone else if they read my add lol thanks for taking the time to do that.
life in the fast lane!!!!
my ride- 2008 yz250f fully modified super fast!!! use to be j-laws bike no joke!!!
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