M&M..i see your getting lot's of info about this... maybe to much????? but i am going to give you some more here is the way i look at if your idle is fine then you pilot's jets are good " your pilots jet are for idle to about 3500 RPM.." if you are running good in that range then i would not mess with them..now moe bring up a good point are you even getting the right amount of gas at the higher rpm's i would do as he says and check the flow to the carbs this is easy to check if you get about a 12 FL OZ in about 20 sec or sooner your good and the way i do this is go to parts store get your self some 1/4 rubber hose and hook it right to the petcock and let run in to a clear pop bottle which is about 12 OZ if the amount of flow is not good dran your tank and pull your petcock and see if all clean also let that bottle of gas set for a time and see if see any thing in it like paint chips or dirt or even water..if thats all good pull your float bowls and the pull your float's and the stoper's your stoper is that small part hooked to the back of your float make sure you take note of how it all look's so you can put it back the same way you took it out.. this is all very easy to to do..
then hook your gas line back up to the tank and put a pan or some thing to catch the gas then turn you petcock on for the same amount of time you had it on when you did the first test and then compar the 2 they should be very close to the same amount " if the amount of gas you get from the float test is not even close to amount of gas you get from the petcock test.... then i would look at that small fillter that is in the line right before the T that feds gas to both carb's .. you can also do each carb put a separate cup's under each carb and you can see how much gas each carb is getting and each carb should be getting about the same amount of gas... this will take care of your gas flow so atleast you will know that is not your trouble..also if you can do this test with the bike up right not on the kick stand...and while you have it apart take a look at your main jets and make sure you have nothing blocking them i would also pull the part that hold the main jet and make sure nothing got buy you main *note when pulling this part be very carfull on top of them set's a very small spacer that has a hole through it make sure you put back in the way you took it out....and also now that you have them apart i would pull the top of the carb's and get a can of carb clearner put that lettle tub you get with the can and spary it through the holes where you jet go and make sure you the spary come out the other side "you can do all of this with the carb's right on the bike but put some rag's down under the carb's so you don't get a big mess on the bike now put it all back together and take it for ride if you are still haveing the same trouble and your plugs still look lean i bet you are running lean here is a newer plug chart the other one is from 1977 this one is from 2003..
web page also i belive if you are running a higher grade of gas your plugs will look cleaner i hope all of this helps but i still belive the bottom line on this one is your running lean !!!!!!!
BIKER
