Anyone know how to adjust the carbs as in mixture - rich/lean?<br /><br />I have an 82 GS750T with Mikuni carbs and it&#039;s running seriously rich and now I notice that a couple of the header pipes are discoloured (as in yellowish - meaning mixture ain&#039;t quite right)<br /><br />Any ideas? Went to Cycle Salvage and he said there was noone in town with an exhaust analyzer so I&#039;m out of luck.<br /><br />I find that hard to believe...I would prefer to do it myself if I can but anyone that has ideas of where I could take it to would be welcomed as well...<br /><br />PS-I know where the mixture screws are, but I have yet to play with them.&nbsp; I went to thegsresources.com and they say tighten them all the way in and loosen them off *about* 2 turns....it&#039;s the &quot;about&quot; that gets me...lol

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A really good resource for technical items on a motorcycle is the NightRider site.&nbsp; They have a Mikuni manual online at http://www.nightrider.com/biketech/download/Mikuni_manuals/tune_mikuni_carbs.pdf.&nbsp; This should get you pointed in the right direction.<br /><br />Also, you can get a better understanding of what your carbs are doing by reading your sparkplugs.&nbsp; Some reading material can be found at <br />http://www.strappe.com/plugs.html and http://www.nightrider.com/biketech/spkplghnbook.htm<br /><br />A quick summary - start the bike, ride it on a deserted piece of highway, pull the clutch in and kill the engine while the bike is still moving.&nbsp; Come to a stop, remove each plug and compare it to the pictures in the above article.&nbsp; The reading should tell you if you are lean or rich - exhaust pipe colour is not a good indicator of this.<br /><br />If the carb reads lean based on the plugs, check for an air leak first.&nbsp; Fire the bike up and spray WD-40 near the air intakes fittings.&nbsp; If the engine RPMS change, its because you are sucking in WD40 which means you have a leak.&nbsp; If you have black soot in the exhaust, you are likely running rich.&nbsp; <br /><br />Sorry, I can&#039;t help you with the exhaust analyzer - its one tool I no longer own, but reading spark plugs is pretty easy to do and gives almost as much information.&nbsp; Once you understand what the problem is, then use the carb manual and your owner&#039;s manual to start adjusting.&nbsp; <br /><br />Three last points, if you do decide to open up the carbs for adjusting and cleaning, buy the gasket kit in advance.&nbsp; Second, there is no need to show how strong you are when you tighten carb parts.&nbsp; They strip super easy and are really a pain to fix when this happens - or at least thats what I&#039;ve heard, okay, thats what I know.&nbsp; And finally, do adjustments in small increments.&nbsp; Turn an adjuster a quarter turn, make a run, compare the results, make another quarter turn, make a run, compare the results, etc.<br /><br />This is one of the reasons why both of my bikes are now fuel injected.&nbsp; I can tune from a laptop and get readings on what is happening inside the engine.&nbsp; My wife&#039;s bike is still carb, but I don&#039;t even bother with it - I just send it into Alsport.<br />dunno

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QUOTE:
<br /> My wife&#039;s bike is still carb, but I don&#039;t even bother with it - I just send it into Alsport.<br />dunno<br />

<br /><br />That&#039;s what I was thinking of doing, I hear they&#039;re pretty backed up though...but it&#039;d be better than me trying to piss around with it I think...

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is it poping if you rev the shit out of it, and let off right away?&nbsp; if so, its too rich.&nbsp; Remember that gs550? youd probabley cry if you saw how many pieces i have it in right now.&nbsp; lol.&nbsp; sometimes its just not worth it to let a show do the work.&nbsp; I would suggest Screwing them all teh way in, and then 2 turns out from there, then play with it.&nbsp; you can usually tell by your idle.&nbsp; or just by looking at the plugs if it is runing incorrectly.

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on my bike i have to change the jets to change the fuel air mixture. i just start out really rich(better safe than sorry) then take it for a little ride. check the plugs, they should be dark and a bit wet, then go down a size until its running good, and the plugs are a nice brown. mine might be different though cause its 2 stroke, ive never touched a 4 stroke. my roomate is a bike mechanic and has been since he was like 12 in his dads shop so if theres any long wait lists, you might wanna drive to hanley( 1 1/2 hrs north of regina on 11)&nbsp; he could have it done in no time. i think their shop rate is 40/hr cause its a small town so it would probably be worth your gas money to drive out. it would only be a cuople of hours.

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im not sure about that shop rate but i know its low.

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out of curiousity...anybody know alsports shop rate?<br /><br />I may just have to cruise up to hanley if it&#039;s alot more than 40... :dunno:

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i thought alsport had a fairly high rate.&nbsp; maybe im wrong, but i think they charge a few pennies to much.

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QUOTE:
<br />i thought alsport had a fairly high rate. maybe im wrong, but i think they charge a few pennies to much.<br />

<br /><br />That&#039;s what I&#039;ve always thought...thus why I&#039;ve never taken anything there...lol

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Might be a good time to try and talk to someone there about getting a group / forum member discount on parts and labour. I know that alsport have been great at helping me out for the parts I was looking for, and I got a great deal on the price. Besides getting the tires mounted, I really haven&#039;t delt with the service side before.<br /><br /><br />I work at the airbase in MJ, and the local bike club here have made a deal with both the dealers in town. I believe they get 10% off any parts, not to sure about the service side though.

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QUOTE:
<br />Might be a good time to try and talk to someone there about getting a group / forum member discount on parts and labour. I know that alsport have been great at helping me out for the parts I was looking for, and I got a great deal on the price. Besides getting the tires mounted, I really haven&#039;t delt with the service side before.<br /><br /><br />I work at the airbase in MJ, and the local bike club here have made a deal with both the dealers in town. I believe they get 10% off any parts, not to sure about the service side though.<br />

<br /><br />That&#039;s a good idea. Josh and I are in the midst of talkin&#039; with a few places around the province about group discounts for members of SMA (both street &amp; sport). sasksportbike has been around for a while now and the large member base gives us a stronger case for discounts.<br /><br />The difficult thing can be that since there are only a few shops around, it can be difficult gettin&#039; anything out of them since alot of times they&#039;re one of the only games in town and most guys would go there anyhow.

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2stroke...I moved your post into Sponsors and Supporters regarding your roommates willingness to lower his rate for SMA members...

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