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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #1  
Old 23 Dec 2012
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3aj tenere knocking sound on cold start

if someone could say what this sound could come(knocking)...timing chain changed before 8000km...after warming bike on short ride,sound dissapears or much quiet...Thanks

http://www.youtube.com/watch?v=9ZZWU...ature=youtu.be
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  #2  
Old 23 Dec 2012
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Hi. Your video is set to "private". So we can't see it..
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  #3  
Old 23 Dec 2012
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corrected
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  #4  
Old 23 Dec 2012
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If valves are en spec, its probably pistonslap.
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  #5  
Old 24 Dec 2012
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thank you all ...I am pretty sure that sound's coming from right hand side,but i can not estimate,did it from barrel or from lower crank part...I will check oil pressure,oil road to head,valve clirence...and keyway,washer of counter balancer...

P.S sound after short ride... 27102012 - YouTube
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  #6  
Old 25 Dec 2012
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Sometimes, when it first starts is there a single hard knock sound?

btw, do you have enough oil in that engine?


Vando
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  #7  
Old 25 Dec 2012
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No ther is not other hard core sound...it has correct level of oil certainly...and it is bradahl xtc c60 10w60 off road
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  #8  
Old 15 Jan 2013
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I checked whether the oil comes up to the cylinder head ... and I checked the oil pressure ...and everithing is ok...Then I decided to take off engine from frame and check condition off head,barrel and piston...engine is on the table http://i1227.photobucket.com/albums/...ps01486210.jpg


I'd appreciate it if anyone would have to give me a link or send me the workshop manual to mail...
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  #9  
Old 15 Jan 2013
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http://www.horizonsunlimited.com/hub...download-32180

This should be it.
__________________
Christian
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  #10  
Old 17 Jan 2013
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Good luck
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  #11  
Old 18 Jan 2013
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thanks...head and barrel are removed from engine...what I found:cam on camshaft are worn and with measuring i determine that is under tolerance(especially exhaust),one exhaust valve look like this http://i1227.photobucket.com/albums/...psefeedaf0.jpg

piston,piston pin,barrel,small end look good without some big damage...but I take them to some workshop on measuring...

http://i1227.photobucket.com/albums/...ps7f028735.jpg (small end)

http://i1227.photobucket.com/albums/...psc69b7aa1.jpg (piston pin)

http://i1227.photobucket.com/albums/...ps68dec3bc.jpg (piston)

http://i1227.photobucket.com/albums/...ps4f129c2e.jpg (barrel)

http://i1227.photobucket.com/albums/...ps0c0436fe.jpg (rocker arm)

http://i1227.photobucket.com/albums/...psc7abcbb3.jpg (rocker arm2)

http://i1227.photobucket.com/albums/...ps3ffa20b8.jpg (camshaft1)

http://i1227.photobucket.com/albums/...psa0abcd1c.jpg (camshaft2)


And one IMPORTANT question...did compleat head from tt600e 2001(cylinder mark 3aj00,head mark 2kf) fit on 3aj with same marks...did there any difference in camshaft...i found one cheap...?
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  #12  
Old 22 Jan 2013
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people...is this play of oil pump drive gear and axle OK ? or all must be tight?

http://s1227.beta.photobucket.com/us...1152c.mp4.html
http://s1227.beta.photobucket.com/us...6f69b.mp4.html
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  #13  
Old 5 Apr 2013
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Hi might be to late, but I had a similar problem with the noise prominantly on the right side cover. when pulled down it was a flogged out key on the counter balance shaft to drive gear. This noise was most noisy when reved from idle as this gives max movement on the shaft. brett
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