tirolean Posted June 17, 2014 Report Share Posted June 17, 2014 Hi guys! I just discovered a knocking in my gasgas today. I´m not sure wheter it´s normal or not I´ve got the video attached, you can hear it pretty well. I checked the crank bearings and they don´t have any play at all. I don´t want to split the cases again, i´m good at it, i´m just not sure if it isn´t just a normal noise greets Dani Quote Link to comment Share on other sites More sharing options...
jonboy883 Posted June 17, 2014 Report Share Posted June 17, 2014 (edited) I had a listen via your vid, and it didn't sound any different to mine. So either mine now also has the same issue, and mine is running "sweet as" , or there is nothing wrong with either of them. My thoughts are the latter, don't worry , just ride !!! Edited June 17, 2014 by jonboy883 Quote Link to comment Share on other sites More sharing options...
aids Posted June 17, 2014 Report Share Posted June 17, 2014 Does the knock go when you pull in the clutch? Quote Link to comment Share on other sites More sharing options...
dandabs Posted June 17, 2014 Report Share Posted June 17, 2014 Hey Tirolean for whatever it's worth my 2009 280 sounds identical to yours. Quote Link to comment Share on other sites More sharing options...
macduff Posted June 19, 2014 Report Share Posted June 19, 2014 Mines a 2001 321 txt and it sound the same as well! I've heard its typical for them to have a knock noise, but would like to know why and try to sort it though. Any suggestions anyone? Quote Link to comment Share on other sites More sharing options...
biffsgasgas Posted June 19, 2014 Report Share Posted June 19, 2014 Here is my video explaining why this happens on the Pro models. It is normal no need to worry. --Biff 2 Quote Link to comment Share on other sites More sharing options...
tirolean Posted June 19, 2014 Author Report Share Posted June 19, 2014 well, at mine it might not be normal, because if i twist the throttle it gets louder tomorrow i´ll check if the clutch basket has play or something i hope it´s nothing bad Quote Link to comment Share on other sites More sharing options...
crazybond700 Posted June 19, 2014 Report Share Posted June 19, 2014 Might be the bearings inside the clutch (2), or the big bearing behind the clutch (gearbox side). Quote Link to comment Share on other sites More sharing options...
crazybond700 Posted June 19, 2014 Report Share Posted June 19, 2014 First feel the clutch basket, after that remove it an check the bearings, (dont damage the allen bolt with the hole), feel the shaft for play, they all have a little bit play, so dont worry too fast. Be carefull with placing the side pannel again, you need to lay the bike down and watch out for the bearing on the clutch piston. Quote Link to comment Share on other sites More sharing options...
tirolean Posted June 20, 2014 Author Report Share Posted June 20, 2014 first off all: thank you for your fast answers! well the clutch shaft has play, you can feel it pretty well. i´m not sure how to check if the two bearings cause the knocking, does someone have tips`? Quote Link to comment Share on other sites More sharing options...
tirolean Posted June 20, 2014 Author Report Share Posted June 20, 2014 i think i know how to see if it´s the two bearings on the clutch side or the one bearing at the transmission side if i pull the clutch, the noise doesn´t go away so it has to be the those two bearings on the clutch side, because if i pull the clutch, the shaft of the transmission doesn´t turn anymore but if the noise is still there it has to be the two bearings Quote Link to comment Share on other sites More sharing options...
crazybond700 Posted June 24, 2014 Report Share Posted June 24, 2014 Could be, difficult so say from a screen. It could also just be ''normal'', they all make some sound, the one more than the other. Take this for granted... Those outer bearings are not that expensive I think, so replacing them is never wrong. However the question stays, why did they go bad? They can be damaged because of to much movement of the clutch because of ..... a moving shaft.... Replacing the inner one is not that much of a trouble if you got mechanical skills. The engine has to be taken out en spitted, which goed very easaly. But you do need to diss an re asemble the gearbox. Quote Link to comment Share on other sites More sharing options...
tirolean Posted June 24, 2014 Author Report Share Posted June 24, 2014 i´ll change the outer ones now i´ve split the case last autumn, so i wouldn´t want to split it again ^^ Quote Link to comment Share on other sites More sharing options...
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