A really good resource for technical items on a motorcycle is the NightRider site. They have a Mikuni manual online at
http://www.nightrider.com/biketech/download/Mikuni_manuals/tune_mikuni_carbs.pdf. 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. 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. Come to a stop, remove each plug and compare it to the pictures in the above article. 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. Fire the bike up and spray WD-40 near the air intakes fittings. If the engine RPMS change, its because you are sucking in WD40 which means you have a leak. If you have black soot in the exhaust, you are likely running rich. <br /><br />Sorry, I can'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. Once you understand what the problem is, then use the carb manual and your owner's manual to start adjusting. <br /><br />Three last points, if you do decide to open up the carbs for adjusting and cleaning, buy the gasket kit in advance. Second, there is no need to show how strong you are when you tighten carb parts. They strip super easy and are really a pain to fix when this happens - or at least thats what I've heard, okay, thats what I know. And finally, do adjustments in small increments. 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. I can tune from a laptop and get readings on what is happening inside the engine. My wife's bike is still carb, but I don't even bother with it - I just send it into Alsport.<br />dunno
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