gazzaecowarrior Posted February 15, 2011 Report Share Posted February 15, 2011 Hi there Been taking apart my 08 rev 4 carb. It's clearly never been touched and the bike hasn't had a great deal of use. But every screw on the carb is seized / over tightened by the factory. I had to use all the tricks in the book to get the screws out of the float bowl and diaphragm top. I'm not being a retard, these screws were jammed solid and had clearly been over tightened by whoever had assembled the carb. I have replaced these and greased the threads with nice stainless allen bolts so hopefully problem solved. But the airscrew just disolved when I put the screw driver on it. The screwdriver fitted perfectly. It too is jammed / seized in it's thread. I took the carb to a motorcycle engineer (I'm very lucky as he has a workshop a few streets away) and he said he had tried everything bar drilling and couldnt get it out. he didn't want to drill it and use a bolt extractor as I had said at least it is siezed in it's right spot and drilling it and getting it wrong could end up with me buying a new carb body. I'm gutted as I was going to fit one of those nify jitsie air screws. Has anybody else had difficulty with this carb ? I have to reluctantly accept it as jammed or risk drilling and ruining carb body which I can't afford to do. Quote Link to comment Share on other sites More sharing options...
rlracer Posted February 16, 2011 Report Share Posted February 16, 2011 Hi there Been taking apart my 08 rev 4 carb. It's clearly never been touched and the bike hasn't had a great deal of use. But every screw on the carb is seized / over tightened by the factory. I had to use all the tricks in the book to get the screws out of the float bowl and diaphragm top. I'm not being a retard, these screws were jammed solid and had clearly been over tightened by whoever had assembled the carb. I have replaced these and greased the threads with nice stainless allen bolts so hopefully problem solved. But the airscrew just disolved when I put the screw driver on it. The screwdriver fitted perfectly. It too is jammed / seized in it's thread. I took the carb to a motorcycle engineer (I'm very lucky as he has a workshop a few streets away) and he said he had tried everything bar drilling and couldnt get it out. he didn't want to drill it and use a bolt extractor as I had said at least it is siezed in it's right spot and drilling it and getting it wrong could end up with me buying a new carb body. I'm gutted as I was going to fit one of those nify jitsie air screws. Has anybody else had difficulty with this carb ? I have to reluctantly accept it as jammed or risk drilling and ruining carb body which I can't afford to do. Quote Link to comment Share on other sites More sharing options...
rlracer Posted February 16, 2011 Report Share Posted February 16, 2011 I have one of the stock screws on the bench if you would like a photo of what a stock screw looks like to help in knowing if you want to drill it out or leave it, send me a PM with your email address and I'll send you a photo in a day or two. Quote Link to comment Share on other sites More sharing options...
gazzaecowarrior Posted February 16, 2011 Author Report Share Posted February 16, 2011 I have one of the stock screws on the bench if you would like a photo of what a stock screw looks like to help in knowing if you want to drill it out or leave it, send me a PM with your email address and I'll send you a photo in a day or two. Thanks for the help but Im in the United Kingdom Quote Link to comment Share on other sites More sharing options...
trialsmotopat Posted February 16, 2011 Report Share Posted February 16, 2011 Thanks for the help but Im in the United Kingdom huh? re-read his post Quote Link to comment Share on other sites More sharing options...
gazzaecowarrior Posted February 17, 2011 Author Report Share Posted February 17, 2011 I have one of the stock screws on the bench if you would like a photo of what a stock screw looks like to help in knowing if you want to drill it out or leave it, send me a PM with your email address and I'll send you a photo in a day or two. Hi there May have misread your post a bit. I thought you were offering to drill it. Apologies, it was very early in the morning. It's ok, I know what the stock air screw looks like. I just don't think it's worth the risk of drilling it unless I can be 100% sure I won't damage the thread. The carb is very expensive on the 4t as you know. The engineer who had a look at it for me is very gifted with how he machines things and even he gave odds of only 50/50 of getting it out undamaged. It just isn't worth the risk as I can't afford a new carb and the bike runs sweetly in the position it is in. I'm not planning on riding anywhere low, high altitude so i think I will just have to put up with it. Thanks anyway. Gareth Quote Link to comment Share on other sites More sharing options...
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